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Journal articles on the topic 'Oxide nanomaterials'
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1
Chen, Wen, Li Qiang Mai, Yan Yuan Qi, Wei Jin, T. Hu, W. L. Guo, Y. Dai, and E. D. Gu. "One-Dimensional Oxide Nanomaterials through Rheological Self-Assembling." Key Engineering Materials 336-338 (April 2007): 2128–33. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.2128.
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This article introduces a process for the growth of one-dimensional oxide nanomaterials that combines rheological phase reaction and hydrothermal self-assembling process. Fundamentals and practical approaches of hydrothermal self-assembling process and rheological phase reaction are briefly described. Particular attention is devoted to the rheological self-assembling for the growth of low dimensional oxide nanomaterials. Many examples are shown that the rheological self-assembling is an effective method to prepare one-dimensional nanomaterials, organic-inorganic hybrids and 1-D nanomaterial array for optical-electronic and electrochemical devices and catalysis. Morphologies, microstructures, properties, and application of one-dimensional oxide nanomaterials are reviewed.
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Liu, Mingling, Meiling Sun, and Zhijia Wang. "Synthesis, Optical Properties and Applications of Ternary Oxide Nanoparticles by a Microwave Technique." Journal of Nanoscience and Nanotechnology 21, no. 10 (October 1, 2021): 5307–11. http://dx.doi.org/10.1166/jnn.2021.19359.
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Nanocrystal preparation is in high demand due to the development of nanodevices. Nanostructures or microstructures of binary oxides such as TiO2, ZnO, and Al2O3 have been extensively prepared and studied. Synthesis of ternary oxide nanomaterials with controlled structures, morphologies, and sizes are of interest due to their potential applications in nanodevices caused by tunable energy level, bandgap, and structure. In this work, a solution-based method is used to prepare CaWO4 and LaPO4 ternary oxide nanomaterials by microwave technique. Controlled sizes and morphologies including nanorods and microspheres are synthesized by the microwave method, which is believed to be a facile and low-cost technique for the synthesis of ternary oxide nanomaterials. Furthermore, the (relatively) quick process enables high efficiency of the production. The structural and optical properties of the prepared nanomaterials are also investigated in this work. This work benefits nanomaterial synthesis for nanomanufacturing and applications in lighting and photodynamic activations as well as optical storage.
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Li, Tianle, and Tao Zhang. "The Application of Nanomaterials in Angiogenesis." Current Stem Cell Research & Therapy 16, no. 1 (December 1, 2021): 74–82. http://dx.doi.org/10.2174/1574888x15666200211102203.
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Induction of angiogenesis has enormous potential in the treatment of ischemic diseases and the promotion of bulk tissue regeneration. However, the poor activity of angiogenic cells and proangiogenic factors after transplantation is the main problem that imposes its wide applications. Recent studies have found that the development of nanomaterials has solved this problem to some extent. Nanomaterials can be mainly classified into inorganic nanomaterials represented by metals, metal oxides and metal hydroxides, and organic nanomaterials including DNA tetrahedrons, graphene, graphene oxide, and carbon nanotubes. These nanomaterials can induce the release of angiogenic factors either directly or indirectly, thereby initiating a series of signaling pathways to induce angiogenesis. Moreover, appropriate surface modifications of nanomaterial facilitate a variety of functions, such as enhancing its biocompatibility and biostability. In clinical applications, nanomaterials can promote the proliferation and differentiation of endothelial cells or mesenchymal stem cells, thereby promoting the migration of hemangioblast cells to form new blood vessels. This review outlines the role of nanomaterials in angiogenesis and is intended to provide new insights into the clinical treatment of systemic and ischemic diseases.
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Бутенко, О. О., О. В. Черниш, В. Г. Хоменко, В. С. Твердохліб, and В. З. Барсуков. "ОСОБЛИВОСТІ ВПЛИВУ НАНОМАТЕРІАЛІВ НА ЕКРАНУВАННЯ ЕЛЕКТРОМАГНІТНОГО ВИПРОМІНЮВАННЯ КОМПОЗИТАМИ." Bulletin of the Kyiv National University of Technologies and Design. Technical Science Series 146, no. 3 (January 11, 2021): 155–64. http://dx.doi.org/10.30857/1813-6796.2020.3.13.
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The use of nanomaterials as a composite material to improve the efficiency of a protective coating for shielding against electromagnetic interference. Samples were studied using equipment from Keycom Corp. (Japan) developed for measuring the shielding effect. Ultrasonic dispersion of nanomaterials was performed using a UZDN-A1200T ultrasonic disperser. The resistivity of the composite coatings was measured using a ST2558B-F01 standardized 4-electrode cell. The influence of various nanomaterials on the protective properties of thin carbon-polymer coatings has been established. The following nanomaterials have been investigated: boron oxide and carbide, iron oxide, carbon nanotubes, and graphene. The dependence of the resistivity of the coating and the shielding effect on the type of nanomaterial in the composite sample has been established. It has been experimentally proved that the ultrasonic dispersion can improve the shielding effect by 2.5 times. It has been found that graphene has a slight advantage compared to other carbon materials. Also, our results have been established that non-conductive materials such as nano-oxides of iron, boron, and boron carbide can be quite effective for creating radio-absorbing composite materials. The paper proposes a new approach to obtain thin protective coatings against electromagnetic radiation using nanomaterials such as boron carbide, boron oxide, iron oxide, some types of carbon nanotubes, and graphene. The paper proposes a unique algorithm for the ultrasonic dispersion of nanomaterials for the manufacture of composite materials. For the first time, an analysis of the shielding effect of coatings based on domestic materials using international standardized research methods has been carried out. Composite coatings can primarily be used to protect humans from electromagnetic radiation. The materials can be widely used to solve the problems of shielding premises, equipment, in the military, and medical industries.
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Бутенко, О. О., О. В. Черниш, В. Г. Хоменко, В. С. Твердохліб, and В. З. Барсуков. "ОСОБЛИВОСТІ ВПЛИВУ НАНОМАТЕРІАЛІВ НА ЕКРАНУВАННЯ ЕЛЕКТРОМАГНІТНОГО ВИПРОМІНЮВАННЯ КОМПОЗИТАМИ." Bulletin of the Kyiv National University of Technologies and Design. Technical Science Series 146, no. 3 (January 11, 2021): 155–64. http://dx.doi.org/10.30857/1813-6796.2020.3.13.
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The use of nanomaterials as a composite material to improve the efficiency of a protective coating for shielding against electromagnetic interference. Samples were studied using equipment from Keycom Corp. (Japan) developed for measuring the shielding effect. Ultrasonic dispersion of nanomaterials was performed using a UZDN-A1200T ultrasonic disperser. The resistivity of the composite coatings was measured using a ST2558B-F01 standardized 4-electrode cell. The influence of various nanomaterials on the protective properties of thin carbon-polymer coatings has been established. The following nanomaterials have been investigated: boron oxide and carbide, iron oxide, carbon nanotubes, and graphene. The dependence of the resistivity of the coating and the shielding effect on the type of nanomaterial in the composite sample has been established. It has been experimentally proved that the ultrasonic dispersion can improve the shielding effect by 2.5 times. It has been found that graphene has a slight advantage compared to other carbon materials. Also, our results have been established that non-conductive materials such as nano-oxides of iron, boron, and boron carbide can be quite effective for creating radio-absorbing composite materials. The paper proposes a new approach to obtain thin protective coatings against electromagnetic radiation using nanomaterials such as boron carbide, boron oxide, iron oxide, some types of carbon nanotubes, and graphene. The paper proposes a unique algorithm for the ultrasonic dispersion of nanomaterials for the manufacture of composite materials. For the first time, an analysis of the shielding effect of coatings based on domestic materials using international standardized research methods has been carried out. Composite coatings can primarily be used to protect humans from electromagnetic radiation. The materials can be widely used to solve the problems of shielding premises, equipment, in the military, and medical industries.
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Ng, C. W. W., and J. L. Coo. "Hydraulic conductivity of clay mixed with nanomaterials." Canadian Geotechnical Journal 52, no. 6 (June 2015): 808–11. http://dx.doi.org/10.1139/cgj-2014-0313.
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The focus of this note is to investigate the hydraulic conductivity behavior of clay mixed with nanomaterials. Two different nanomaterials — namely, gamma-aluminum oxide powder (γ-Al2O3) and nano-copper oxide (CuO) — were selected and mixed with clay at different percentages (i.e., 2%, 4%, and 6%). Hydraulic conductivity tests were carried out in a flexible wall permeameter following the ASTM D5084 standard. Mercury intrusion porosimetry (MIP) tests were also carried out to determine the pore-size distribution. At 2% of γ-Al2O3 and nano-CuO, the hydraulic conductivity of clay decreased 30% and 45%, respectively. As the proportion of the nanomaterial increases, the reduction of hydraulic conductivity becomes less prominent as flow paths devoid of nanomaterials are unlikely. Reduction of hydraulic conductivity is due to the pores of clay being clogged by the nanomaterial. Pore-size distribution curves show that the largest pore size reduced by 20% when clay was mixed with 4% nano-CuO.
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Garriga, Rosa, Tania Herrero-Continente, Miguel Palos, Vicente L. Cebolla, Jesús Osada, Edgar Muñoz, and María Jesús Rodríguez-Yoldi. "Toxicity of Carbon Nanomaterials and Their Potential Application as Drug Delivery Systems: In Vitro Studies in Caco-2 and MCF-7 Cell Lines." Nanomaterials 10, no. 8 (August 18, 2020): 1617. http://dx.doi.org/10.3390/nano10081617.
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Carbon nanomaterials have attracted increasing attention in biomedicine recently to be used as drug nanocarriers suitable for medical treatments, due to their large surface area, high cellular internalization and preferential tumor accumulation, that enable these nanomaterials to transport chemotherapeutic agents preferentially to tumor sites, thereby reducing drug toxic side effects. However, there are widespread concerns on the inherent cytotoxicity of carbon nanomaterials, which remains controversial to this day, with studies demonstrating conflicting results. We investigated here in vitro toxicity of various carbon nanomaterials in human epithelial colorectal adenocarcinoma (Caco-2) cells and human breast adenocarcinoma (MCF-7) cells. Carbon nanohorns (CNH), carbon nanotubes (CNT), carbon nanoplatelets (CNP), graphene oxide (GO), reduced graphene oxide (GO) and nanodiamonds (ND) were systematically compared, using Pluronic F-127 dispersant. Cell viability after carbon nanomaterial treatment followed the order CNP < CNH < RGO < CNT < GO < ND, being the effect more pronounced on the more rapidly dividing Caco-2 cells. CNP produced remarkably high reactive oxygen species (ROS) levels. Furthermore, the potential of these materials as nanocarriers in the field of drug delivery of doxorubicin and camptothecin anticancer drugs was also compared. In all cases the carbon nanomaterial/drug complexes resulted in improved anticancer activity compared to that of the free drug, being the efficiency largely dependent of the carbon nanomaterial hydrophobicity and surface chemistry. These fundamental studies are of paramount importance as screening and risk-to-benefit assessment towards the development of smart carbon nanomaterial-based nanocarriers.
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Kumar, Abhishek, Rajiv Rakshit, Arnab Bhowmik, Nintu Mandal, Anupam Das, and Samrat Adhikary. "Nanoparticle-Induced Changes in Resistance and Resilience of Sensitive Microbial Indicators towards Heat Stress in Soil." Sustainability 11, no. 3 (February 7, 2019): 862. http://dx.doi.org/10.3390/su11030862.
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Modern agricultural innovations with nanomaterials are now being applied in every sphere of agriculture. However, their interaction with soil microbial processes is not being explored in detail. This initiative was undertaken to understand the effect of metal-oxide nanoparticles with heat stress in soil. Metal-oxide nanoparticles, zinc oxide (ZnO), and iron oxide (Fe2O3) (each at 10 and 40 mg kg−1 w/w) were mixed into uncontaminated soil and subjected to heat stress of 48 °C for 24 hours to assess their effect on soil biological indicators. The resistance indices for the acid (ACP), alkaline phosphatase (AKP) activity, and fluorescein diacetate hydrolyzing (FDA) activity (0.58 to 0.73, 0.58 to 0.66, and 0.42 to 0.48, respectively) were higher in the presence of ZnO nanoparticles as compared to Fe2O3 nanomaterials, following an unpredictable pattern at either 10 or 40 mg kg−1 in soils, except dehydrogenase activity (DHA), for which the activity did not change with ZnO nanomaterial. An explicit role of ZnO nanomaterial in the revival pattern of the enzymes was observed (0.20 for DHA, 0.39 for ACP, and 0.43 for AKP), except FDA, which showed comparable values with Fe2O3 nanomaterials for the following 90 day (d) after stress. Microbial count exhibiting higher resistance values were associated with Fe2O3 nanoparticles as compared to ZnO nanomaterials, except Pseudomonas. The recovery indices for the microbial counts were higher with the application of Fe2O3 nanomaterials (0.34 for Actinobacteria, 0.38 for fungi, 0.33 for Pseudomonas and 0.28 for Azotobacter). Our study emphasizes the fact that sensitive microbial indicators in soil might be hampered by external stress initially but do have the competency to recover with time, thereby reinstating the resistance and resilience of soil systems.
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Barbillon, Grégory. "Latest Novelties on Plasmonic and Non-Plasmonic Nanomaterials for SERS Sensing." Nanomaterials 10, no. 6 (June 19, 2020): 1200. http://dx.doi.org/10.3390/nano10061200.
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An explosion in the production of substrates for surface enhanced Raman scattering (SERS) has occurred using novel designs of plasmonic nanostructures (e.g., nanoparticle self-assembly), new plasmonic materials such as bimetallic nanomaterials (e.g., Au/Ag) and hybrid nanomaterials (e.g., metal/semiconductor), and new non-plasmonic nanomaterials. The novel plasmonic nanomaterials can enable a better charge transfer or a better confinement of the electric field inducing a SERS enhancement by adjusting, for instance, the size, shape, spatial organization, nanoparticle self-assembly, and nature of nanomaterials. The new non-plasmonic nanomaterials can favor a better charge transfer caused by atom defects, thus inducing a SERS enhancement. In last two years (2019–2020), great insights in the fields of design of plasmonic nanosystems based on the nanoparticle self-assembly and new plasmonic and non-plasmonic nanomaterials were realized. This mini-review is focused on the nanoparticle self-assembly, bimetallic nanoparticles, nanomaterials based on metal-zinc oxide, and other nanomaterials based on metal oxides and metal oxide-metal for SERS sensing.
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Saleem, Haleema, and Syed Javaid Zaidi. "Developments in the Application of Nanomaterials for Water Treatment and Their Impact on the Environment." Nanomaterials 10, no. 9 (September 7, 2020): 1764. http://dx.doi.org/10.3390/nano10091764.
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Nanotechnology is an uppermost priority area of research in several nations presently because of its enormous capability and financial impact. One of the most promising environmental utilizations of nanotechnology has been in water treatment and remediation where various nanomaterials can purify water by means of several mechanisms inclusive of the adsorption of dyes, heavy metals, and other pollutants, inactivation and removal of pathogens, and conversion of harmful materials into less harmful compounds. To achieve this, nanomaterials have been generated in several shapes, integrated to form different composites and functionalized with active components. Additionally, the nanomaterials have been added to membranes that can assist to improve the water treatment efficiency. In this paper, we have discussed the advantages of nanomaterials in applications such as adsorbents (removal of dyes, heavy metals, pharmaceuticals, and organic contaminants from water), membrane materials, catalytic utilization, and microbial decontamination. We discuss the different carbon-based nanomaterials (carbon nanotubes, graphene, graphene oxide, fullerenes, etc.), and metal and metal-oxide based nanomaterials (zinc-oxide, titanium dioxide, nano zerovalent iron, etc.) for the water treatment application. It can be noted that the nanomaterials have the ability for improving the environmental remediation system. The examination of different studies confirmed that out of the various nanomaterials, graphene and its derivatives (e.g., reduced graphene oxide, graphene oxide, graphene-based metals, and graphene-based metal oxides) with huge surface area and increased purity, outstanding environmental compatibility and selectivity, display high absorption capability as they trap electrons, avoiding their recombination. Additionally, we discussed the negative impacts of nanomaterials such as membrane damage and cell damage to the living beings in the aqueous environment. Acknowledgment of the possible benefits and inadvertent hazards of nanomaterials to the environment is important for pursuing their future advancement.
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Tripathi, S. K., Ramneek Kaur, and Mamta Rani. "Oxide Nanomaterials and their Applications as a Memristor." Solid State Phenomena 222 (November 2014): 67–97. http://dx.doi.org/10.4028/www.scientific.net/ssp.222.67.
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Nowadays, oxide nanomaterials have received great attention due to their unique semiconducting, optical and electrical properties. Oxide nanomaterials exhibit these properties due to their small size, high surface area to volume ratio and great biocompatibility. The chemical activity of the oxide nanomaterials is highly enhanced by the presence of oxygen vacancies in these materials. This review article outlined the unique properties, synthesis techniques and applications of oxide nanomaterials.The important and unique properties of TiO2and ZnO nanomaterials with their possible crystal structures have been discussed. In application part, the oxide nanomaterials especially ZnO has been discussed for memory device applications. To control the performance of oxide nanomaterials for memristor device application, a better understanding of their properties is required.Table of Contents
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Constant-Mandiola, Benjamin, Héctor Aguilar-Bolados, Julian Geshev, and Raul Quíjada. "Study of the Influence of Magnetite Nanoparticles Supported on Thermally Reduced Graphene Oxide as Filler on the Mechanical and Magnetic Properties of Polypropylene and Polylactic Acid Nanocomposites." Polymers 13, no. 10 (May 18, 2021): 1635. http://dx.doi.org/10.3390/polym13101635.
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A study addressed to develop new recyclable and/or biodegradable magnetic polymeric materials is reported. The selected matrices were polypropylene (PP) and poly (lactic acid) (PLA). As known, PP corresponds to a non-polar homo-chain polymer and a commodity, while PLA is a biodegradable polar hetero-chain polymer. To obtain the magnetic nanocomposites, magnetite supported on thermally reduced graphene oxide (TrGO:Fe3O4 nanomaterial) to these polymer matrices was added. The TrGO:Fe3O4 nanomaterials were obtained by a co-precipitation method using two types of TrGO obtained by the reduction at 600 °C and 1000 °C of graphite oxide. Two ratios of 2.5:1 and 9.6:1 of the magnetite precursor (FeCl3) and TrGO were used to produce these nanomaterials. Consequently, four types of nanomaterials were obtained and characterized. Nanocomposites were obtained using these nanomaterials as filler by melt mixer method in polypropylene (PP) or polylactic acid (PLA) matrix, the filler contents were 3, 5, and 7 wt.%. Results showed that TrGO600-based nanomaterials presented higher coercivity (Hc = 8.5 Oe) at 9.6:1 ratio than TrGO1000-based nanomaterials (Hc = 4.2 Oe). PLA and PP nanocomposites containing 7 wt.% of filler presented coercivity of 3.7 and 5.3 Oe, respectively. Theoretical models were used to analyze some relevant experimental results of the nanocomposites such as mechanical and magnetic properties.
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Li, Su Jun. "Synthesis and Application of Manganese Oxide Based Nanomaterials." Advanced Materials Research 830 (October 2013): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amr.830.33.
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Manganese oxide is one of the most attractive inorganic materials because of its structural flexibility and wide applications in catalysis, ion exchange, electrochemical supercapacitors, molecular adsorption, biosensors, and so on. In recently, manganese oxides nanomaterials, including MnO, MnO2and Mn3O4, have attracted great interest as anode materials in lithium-ion batteries and water treatment due to their high theoretical capacity, environmental benignity, low cost, and special properties. Hence, manganese oxides nanostructures with excellent properties and various morphologies have been successfully synthesized. Herein, we provide a recent development of the synthesis of manganese oxides nanomaterials and their application.
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Wu, Hui Qing, and Qing Ping Wu. "Research Progress of Nanomaterials about Removal of Toxic Metal Ions and Organics Used in Water Treatment." Advanced Materials Research 662 (February 2013): 207–13. http://dx.doi.org/10.4028/www.scientific.net/amr.662.207.
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This paper is a simple review of nanomaterials about removal of toxic metal ions and organics from water/wastewater, include nanomaterial types, preparation methods and the research progress. Introduced with emphasis on nanoscale zero-valent iron, iron oxide nanoparticles, nanosized metal oxides, magnetic nanoparticles and mesoporous magnetic adsorbents with support medium such as bentonite, zeolites, sand, activated carbon, multiwall carbon nanotubes, porous molecular sieve and graphite alkenyl nanometer film. Some capping agents for preventing polymerization of nanoparticles were also introduced.
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Dontsova, Tetiana A., Svitlana V. Nahirniak, and Ihor M. Astrelin. "Metaloxide Nanomaterials and Nanocomposites of Ecological Purpose." Journal of Nanomaterials 2019 (April 30, 2019): 1–31. http://dx.doi.org/10.1155/2019/5942194.
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The features of the properties and creation of nanocomposite metal oxide materials, especially TiO2, ZnO, SnO2, ZrO2, and Fe3O4, and their applications for ecology are considered in the article. It is shown that nanomaterials based on them are very promising for use in the ecological direction, especially as sorbents, photocatalysts, and sensitive layers of gas sensors. The crystallochemical characteristics, surface structure, and surface phenomena that occur when they enter the water and air environment are given for these metal oxides, and it is shown that they play a significant role in obtaining the sorption and catalytic characteristics of these nanomaterials. Particular attention is paid to the dispersion and morphology of metal oxide particles by which their physical and chemical properties can be controlled. Synthesis methods of metal oxide nanomaterials and ways for creating of nanocomposites based on them are characterized, and it is noted that there are many methods for obtaining individual nanoparticles of metal oxides with certain properties. The main task is the correct selection and testing of parameters. The prospects for the production of metal oxide nanocomposites and their application for environmental applications are noted, which will lead to a fundamentally new class of materials and new environmental technologies with their participation.
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Mansurov, Zulkhair. "Combustion Synthesis of Nanomaterials." Advanced Materials Research 699 (May 2013): 138–43. http://dx.doi.org/10.4028/www.scientific.net/amr.699.138.
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An experimental study has been conducted in premixed and counterflow diffusion flames in order to obtain the nanocarbon materials. The original results in the field of synthesis of fullerenes, carbon nanotubes, syperhydrophobic soot,grapheme and nickel oxide nanoparticles in hydrocarbon flames were carried out for the last years at the Institute of Combustion Problems. Nanoparticles of nickel oxides contribute to the efficient absorption of light energy. Surfacing on the surface of a silicon solar cell of led to an increase in solar cell efficiency by 3%.
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Gangwar, Jitendra, Bipin Kumar Gupta, and Avanish Kumar Srivastava. "Prospects of Emerging Engineered oxide nanomaterials and their Applications." Defence Science Journal 66, no. 4 (June 28, 2016): 323. http://dx.doi.org/10.14429/dsj.66.10206.
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<p>This review article mainly focused on the recent progress on the synthesis and characterization of emerging artificially engineered nanostructures of oxide materials as well as their potential applications. A fundamental understanding about the state-of-the-art of the synthesis for different size, shape and morphology, which can be tuned to the desired properties of oxide nanomaterials have discussed in details in this review. The present review covers the a wide range of artificially engineered oxide nanomaterials such as cadmium-, cupric-, nickel-, magnesium-, zinc-, titanium-, tin-, aluminium-, and vanadium-oxides and their useful applications in sensors, optical displays, nanofluids and defence.</p>
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Magro, Massimiliano, Davide Baratella, Emanuela Bonaiuto, Jessica de A. Roger, and Fabio Vianello. "New Perspectives on Biomedical Applications of Iron Oxide Nanoparticles." Current Medicinal Chemistry 25, no. 4 (February 12, 2018): 540–55. http://dx.doi.org/10.2174/0929867324666170616102922.
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Iron oxide nanomaterials are considered promising tools for improved therapeutic efficacy and diagnostic applications in biomedicine. Accordingly, engineered iron oxide nanomaterials are increasingly proposed in biomedicine, and the interdisciplinary researches involving physics, chemistry, biology (nanotechnology) and medicine have led to exciting developments in the last decades. The progresses of the development of magnetic nanoparticles with tailored physico-chemical and surface properties produced a variety of clinically relevant applications, spanning from magnetic resonance imaging (MRI), drug delivery, magnetic hyperthermia, to in vitro diagnostics. Notwithstanding the wellknown conventional synthetic procedures and their wide use, along with recent advances in the synthetic methods open the door to new generations of naked iron oxide nanoparticles possessing peculiar surface chemistries, suitable for other competitive biomedical applications. New abilities to rationally manipulate iron oxides and their physical, chemical, and biological properties, allow the emersion of additional possibilities for designing novel nanomaterials for theranostic applications.
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Saleem, Haleema, and Syed Javaid Zaidi. "Recent Developments in the Application of Nanomaterials in Agroecosystems." Nanomaterials 10, no. 12 (December 2, 2020): 2411. http://dx.doi.org/10.3390/nano10122411.
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Nanotechnology implies the scientific research, development, and manufacture, along with processing, of materials and structures on a nano scale. Presently, the contamination of metalloids and metals in the soil has gained substantial attention. The consolidation of nanomaterials and plants in ecological management has received considerable research attention because certain nanomaterials could enhance plant seed germination and entire plant growth. Conversely, when the nanomaterial concentration is not properly controlled, toxicity will definitely develop. This paper discusses the role of nanomaterials as: (1) nano-pesticides (for improving the plant resistance against the biotic stress); and (2) nano-fertilizers (for promoting the plant growth by providing vital nutrients). This review analyzes the potential usages of nanomaterials in agroecosystem. In addition, the adverse effects of nanomaterials on soil organisms are discussed. We mostly examine the beneficial effects of nanomaterials such as nano-zerovalent iron, iron oxide, titanium dioxide, nano-hydroxyapatite, carbon nanotubes, and silver- and copper-based nanomaterials. Some nanomaterials can affect the growth, survival, and reproduction of soil organisms. A change from testing/using nanomaterials in plants for developing nanomaterials depending on agricultural requirements would be an important phase in the utilization of nanomaterials in sustainable agriculture. Conversely, the transport as well as ecological toxicity of nanomaterials should be seriously examined for guaranteeing its benign usage in agriculture.
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Zhai, Y. J., J. H. Li, X. Y. Chu, M. Z. Xu, X. Li, X. Fang, Z. P. Wei, and X. H. Wang. "Photocatalytic Performance in Oxide Nanomaterials." Integrated Ferroelectrics 167, no. 1 (November 22, 2015): 1–16. http://dx.doi.org/10.1080/10584587.2015.1105010.
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Stefanescu, Diana M., Ali Khoshnan, Paul H. Patterson, and Janet G. Hering. "Neurotoxicity of manganese oxide nanomaterials." Journal of Nanoparticle Research 11, no. 8 (November 19, 2008): 1957–69. http://dx.doi.org/10.1007/s11051-008-9554-1.
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Liu, Huang, Yanhua Zhang, Hongtao Yang, Wei Xiao, and Lanlan Sun. "Filter Paper Inspired Zinc Oxide Nanomaterials with High Photocatalytic Activity for Degradation of Methylene Orange." Journal of Chemistry 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/2862567.
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Nanometer-sized zinc oxide (ZnO) has been synthesized through sol-gel method with natural cellulose substance (commercial filter paper) as template. The structure of zinc oxide nanomaterial was characterized by nitrogen adsorption-desorption and XRD. The morphology was observed by SEM and TEM. The results show that the hexagonal wurtzite phase is actually the only crystal phase in the sample and the product faithfully inherits the hierarchical morphology and the complex network structure of the original filter paper, which is composed of many randomly intersecting zinc oxide microfibers and nanosheets with lots of close stacked particles adsorbed on the surface. Moreover, these zinc oxide nanomaterials possess abundant mesoporous structure with an average pore diameter ofca. 21 nm and a wide pore size distribution (3–30 nm). Due to the strong absorption ability in the UV range, the zinc oxide nanomaterial prepared by this method displays significantly high photocatalytic activity for degrading methyl orange. In a short period of 20 minutes, the zinc oxide nanomaterial has degraded about 50% of the original MO, and the MO dye is fully degraded after UV irradiation for 80 minutes.
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Zafar, Nabila, Ahmed Madni, Ayesha Khalid, Taous Khan, Rozina Kousar, Syeda Sohaila Naz, and Fazli Wahid. "Pharmaceutical and Biomedical Applications of Green Synthesized Metal and Metal Oxide Nanoparticles." Current Pharmaceutical Design 26, no. 45 (December 24, 2020): 5844–65. http://dx.doi.org/10.2174/1381612826666201126144805.
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Background: Due to the rapid growth in life threatening diseases such as cancer, diabetes, chronic wound and HIV/AIDS along with rise of side effects of the current treatments, world is now focusing to utilize new treatment options. Currently, the development of green nanotechnology field seems as a potential alternate for diseases diagnosis and treatment by preparation of various sizes and shapes of nanomaterials. Objective: This review is to present the explored biological sources in synthesis of nanomaterials particularly metal and metal oxides nanoparticles and critical review of the applications of biosynthesized nanoparticles in pharmaceutical and biomedical fields. Methods: In this review, the various biological sources including bacteria, fungi, algae and plants used in synthesis of nanomaterials and mechanism involved in preparation are elaborated. In addition, biosynthesized nanomaterials applied as drug delivery system for anticancer, antibiotic, antidiabetic agent and functioned as potential diagnostic, antimicrobial, anticancer and wound healing candidates are comprehensively reviewed. Results: The synthesized metal and metal oxides from green protocol proved to have advantages such as being biocompatible, effective and cheap. Furthermore, the green synthesized metal and metal oxide nanoparticles showed to possess prominent physical, chemical and biological properties that can be efficiently utilized for pharmaceutical and biomedical applications. Conclusion: The information gathered in this review will provide a baseline for exploring more potential usage of green synthesized metal and metal oxide nanomaterials for various other applications. However, a concrete understanding of the safety of these nanomaterials is still needed to minimize the potential side effects.
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Yousf, Nehad, Emtinan Ouda, Hend S. Magar, Rabeay Y. A. Hassan, S. A. Mansour, and El-Shazly M. Duraia. "Synthesis, Characterization, and Electrochemical Sensing Applications of Bimetallic Oxide/Carbon Nanomaterials Hybrids." Journal of The Electrochemical Society 169, no. 4 (April 1, 2022): 047518. http://dx.doi.org/10.1149/1945-7111/ac6458.
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Bimetallic oxide/carbon nanomaterials hybrids were chemically synthesized and fully characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM), High-resolution transmission electron microscopy (HRTEM), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The elemental analysis confirmed the successful formation of MnCo2O4/carbon nanomaterials. The fingerprint area of FTIR showed the incorporation of the metal oxides onto CNTs and GO surfaces. Morphological investigations of the hybrids, using FESEM and HRTEM, revealed the uniform distribution of bimetallic oxides nanostructures over the surface of carbon nanomaterials. Furthermore, electrochemical characteristics were explored using the CV and EIS. The obtained electrochemical results demonstrated significant improvements in the electrocatalytic properties, in addition to the direct and fast electron transfer provided by the modified surfaces whereas the MnCo2O4/CNTs were exploited for the nano-enzymatic amperometric detection of hydrogen peroxide as an example to show the promising applications of such nanomaterials in designing high-efficiency nano-sensors and biosensors.
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Guzmán Chávez, Alenka. "INNOVATION ON NANOMATERIALS ACROSS COUNTRIES IN A TRIPLE HELIX FRAMEWORK: THE CASE OXIDE OF HAFNIUM." PANORAMA ECONÓMICO 7, no. 14 (February 21, 2017): 29. http://dx.doi.org/10.29201/pe-ipn.v7i14.64.
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The aim of this paper is to identify the innovation capabilities and knowledge flows of firms, universities and research institutes in the nanomaterials field across countries, particularly in the “hafnium” nanomaterial. Through the analysis of patents granted at the United States Patent and Trademark Office (USPTO) in hafnium field we want to know how the entrepreneurs, government and academic and research institutions are concern to innovate and how the knowledge flows are manifested at the inventors level. As same, we want to explore how in Mexico the firms, universities and government are contributing to build scientific and technological capabilities in this new scientific and technological paradigm. Taking into account the international innovation gaps in hafnium nanomaterial, we discus about the main institutional policies that Mexico could foster to build scientific and technological capabilities, to spread the new technological paradigm and, therefore, to favor the technological catch up in nanomaterials field.
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Serga, Vera, Dmitry Zablotsky, Aija Krūmiņa, Mara Lubane, and Gundega Heidemane. "Phase Composition and Morphology of Tungsten Oxide Nanoparticles Produced via a Pyrolytic Process." Key Engineering Materials 762 (February 2018): 288–93. http://dx.doi.org/10.4028/www.scientific.net/kem.762.288.
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The chemical synthesis is a leading route for the purposeful design of nanomaterials, whereas the tungsten oxides are employed in a variety of special applications. The production of nanomaterials by traditional synthetic methods is still a cumbersome multistep procedure. Here we propose an improved method to produce tungsten oxide nanoparticles via a pyrolytic process. A tungsten-containing precursor was prepared by liquid extraction using n-trioctylamine (C8H17)3N solution in toluene. We have shown that the conditions of thermal treatment of the W-based precursor determine the crystalline structure and nanomorphology of the final product. Monoclinic WO3 nanocrystallites are produced conducting the pyrolysis above 450 °C. The proposed method is a facile and versatile route to produce and control the phase composition and morphology of tungsten oxide-based nanomaterials.
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Tsukanov, Alexey, Boris Turk, Olga Vasiljeva, and Sergey Psakhie. "Computational Indicator Approach for Assessment of Nanotoxicity of Two-Dimensional Nanomaterials." Nanomaterials 12, no. 4 (February 15, 2022): 650. http://dx.doi.org/10.3390/nano12040650.
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The increasing growth in the development of various novel nanomaterials and their biomedical applications has drawn increasing attention to their biological safety and potential health impact. The most commonly used methods for nanomaterial toxicity assessment are based on laboratory experiments. In recent years, with the aid of computer modeling and data science, several in silico methods for the cytotoxicity prediction of nanomaterials have been developed. An affordable, cost-effective numerical modeling approach thus can reduce the need for in vitro and in vivo testing and predict the properties of designed or developed nanomaterials. We propose here a new in silico method for rapid cytotoxicity assessment of two-dimensional nanomaterials of arbitrary chemical composition by using free energy analysis and molecular dynamics simulations, which can be expressed by a computational indicator of nanotoxicity (CIN2D). We applied this approach to five well-known two-dimensional nanomaterials promising for biomedical applications: graphene, graphene oxide, layered double hydroxide, aloohene, and hexagonal boron nitride nanosheets. The results corroborate the available laboratory biosafety data for these nanomaterials, supporting the applicability of the developed method for predictive nanotoxicity assessment of two-dimensional nanomaterials.
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Fedorenko, George, Ludmila Oleksenko, and Nelly Maksymovych. "Oxide Nanomaterials Based on SnO2 for Semiconductor Hydrogen Sensors." Advances in Materials Science and Engineering 2019 (August 5, 2019): 1–7. http://dx.doi.org/10.1155/2019/5190235.
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Nanosized tin dioxide with an average particle size of 5.3 nm was synthesized by a sol-gel method and characterized by IR spectroscopy, TEM, X-ray, and electron diffraction. The obtained SnO2 can be used as initial material for creation of gas-sensitive layers of adsorption semiconductor sensors. Addition of palladium into the initial nanomaterial allows to improve response to hydrogen of such sensors in comparison with sensors based on undoped SnO2 and provides fast response and recovery time, a wide measuring range of hydrogen content in air ambient, and good repeatability of the sensor signal. Such promising properties could make useful the sensors based on these nanomaterials for devices intended to determine hydrogen in air.
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Yudaev, Pavel, Vladimir Chuev, Bogdan Klyukin, Andrey Kuskov, Yaroslav Mezhuev, and Evgeniy Chistyakov. "Polymeric Dental Nanomaterials: Antimicrobial Action." Polymers 14, no. 5 (February 22, 2022): 864. http://dx.doi.org/10.3390/polym14050864.
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This review aims to describe and critically analyze studies published over the past four years on the application of polymeric dental nanomaterials as antimicrobial materials in various fields of dentistry. Nanoparticles are promising antimicrobial additives to restoration materials. According to published data, composites based on silver nanoparticles, zinc(II), titanium(IV), magnesium(II), and copper(II) oxide nanoparticles, chitosan nanoparticles, calcium phosphate or fluoride nanoparticles, and nanodiamonds can be used in dental therapy and endodontics. Composites with nanoparticles of hydroxyapatite and bioactive glass proved to be of low efficiency for application in these fields. The materials applicable in orthodontics include nanodiamonds, silver nanoparticles, titanium(IV) and zinc(II) oxide nanoparticles, bioactive glass, and yttrium(III) fluoride nanoparticles. Composites of silver nanoparticles and zinc(II) oxide nanoparticles are used in periodontics, and nanodiamonds and silver, chitosan, and titanium(IV) oxide nanoparticles are employed in dental implantology and dental prosthetics. Composites based on titanium(IV) oxide can also be utilized in maxillofacial surgery to manufacture prostheses. Composites with copper(II) oxide nanoparticles and halloysite nanotubes are promising materials in the field of denture prosthetics. Composites with calcium(II) fluoride or phosphate nanoparticles can be used in therapeutic dentistry for tooth restoration.
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Tripathi, S. K., Ramneek Kaur, Shivani Bharti, Isha Gawri, and Jagdish Kaur. "Recent Advances in Synthesis, Properties and Applications of Magnetic Oxide Nanomaterials." Solid State Phenomena 232 (June 2015): 1–44. http://dx.doi.org/10.4028/www.scientific.net/ssp.232.1.
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Oxide nanomaterials are in great demand due to their unique physical, chemical and structural properties. The nanostructured materials with desired magnetic properties are the future of power electronics. Unique magnetic properties and excellent biocompatibility of these materials found applications in pharmaceutical field also. For these applications, the synthesis of magnetic oxide nanomaterials with required properties is highly desirable. Till now, various techniques have been evolved for the synthesis of oxide nanomaterials with full control over their shape, size, morphology and magnetic properties. In nanoscale, the magnetic properties are totally different from their bulk counterparts. In this range, each nanoparticle acts as a single magnetic domain and shows fast response to applied magnetic field. This review article discusses the synthesis techniques, properties and the applications of magnetic oxide nanomaterials. Various characterization techniques for magnetic materials have been discussed along with the literature of iron oxide, nickel oxide, and cobalt oxide nanomaterials. The challenges for further development of these materials have also been presented to broaden their rapidly emerging applications.
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Adhikari, Aniruddha, Susmita Mondal, Soumendra Darbar, and Samir Kumar Pal. "Role of Nanomedicine in Redox Mediated Healing at Molecular Level." Biomolecular Concepts 10, no. 1 (October 29, 2019): 160–74. http://dx.doi.org/10.1515/bmc-2019-0019.
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AbstractNanomedicine, the offspring born from the marriage of nanotechnology and medicine, has already brought momentous advances in the fight against a plethora of unmet diseases from cardiovascular and neurodegenerative to diabetes and cancer. Here, we review a conceptual framework that will provide a basic understanding about the molecular mechanism of action of a therapeutic nanomaterial inside biological milieu. In this review, we highlight how the catalytic nature of a transition metal oxide nanomaterial influences the cellular redox homeostasis, supports the cellular antioxidant defence system and reactivates the reactive oxygen species (ROS) mediated signalling to perform normal cell functions like cell cycle, differentiation, apoptosis, inflammation, toxicity, and protein interactions. With numerous examples, we describe the redox modulatory nature of d-block metal oxide nanomaterials and their biomimetic nanozyme activities to protect the mitochondria, the cellular redox mediator which prevents an organism from various diseases. This knowledge will be useful to design new nanomaterials capable of intracellular redox modulation, which in turn can be effective therapeutic agents for treatment of various unmet diseases that are beyond the ability of modern synthetic medicine.
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Kamenska, Trayana, Miroslav Abrashev, Milena Georgieva, and Natalia Krasteva. "Impact of Polyethylene Glycol Functionalization of Graphene Oxide on Anticoagulation and Haemolytic Properties of Human Blood." Materials 14, no. 17 (August 26, 2021): 4853. http://dx.doi.org/10.3390/ma14174853.
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Graphene oxide (GO) is one of the most explored nanomaterials in recent years. It has numerous biomedical applications as a nanomaterial including drug and gene delivery, contrast imaging, cancer treatment, etc. Since most of these applications need intravenous administration of graphene oxide and derivatives, the evaluation of their haemocompatibility is an essential preliminary step for any of the developed GO applications. Plentiful data show that functionalization of graphene oxide nanoparticles with polyethylene glycol (PEG) increases biocompatibility, thus allowing PEGylated GO to elicit less dramatic blood cell responses than their pristine counterparts. Therefore, in this work, we PEGylated graphene oxide nanoparticles and evaluated the effects of their PEGylation on the structure and function of human blood components, especially on the morphology and the haemolytic potential of red blood cells (RBCs). Further, we studied the effect of PEGylation on some blood coagulation factors, including plasma fibrinogen as well as on the activated partial thromboplastin (aPTT), prothrombin time (PT) and platelet aggregation. Our findings provide important information on the mechanisms through which PEGylation increases GO compatibility with human blood cells. These data are crucial for the molecular design and biomedical applications of PEGylated graphene oxide nanomaterials in the future.
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Chen, Ya Nan, Xiang Zheng, Di Chen, and Ye Yang. "The Evaluation of Photo Catalytic-Membrane Reactor with Nanomaterials for Removing Virus." Materials Science Forum 743-744 (January 2013): 706–12. http://dx.doi.org/10.4028/www.scientific.net/msf.743-744.706.
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Nanometer photo catalytic-membrane reactor integrated photo catalytic technology with membrane separation technology was applied to remove virus existing in water. Bacteriophage f2 was used as surrogates for human enteric viruses. Two kinds of nanomaterials (TiO2and ZnO) were selected as the catalyst. Three kinds of membranes interception performance for virus, adsorption efficiency of nanomaterial for virus, inactivated effect for virus with photo catalysis, and the comprehensive effect to f2 of photo catalytic-membrane reactor were studied under the transmembrane pressure of 20Kpa, with nanomaterial concentration of 100mg/L, light dose of 20mJ/cm2. It showed that the interception effect of flat membrane with casting was the best. the adsorption efficiency of the two kinds of nanomaterials was different, 1.478 lg and 0.201 lg for TiO2and ZnO, respectively. The removal effect of the photo catalytic oxidation system to f2 was similar, both in 2-3 log. The removal efficiency of the photo catalytic-membrane reactor system has no obvious difference, both in 3-4 log, and it is improved significantly compared to the effect of individual photo catalysis and membrane separation. Further research indicates that: the elimination function of coupling system to f2 includes UV-inactivated, adsorption of nanomaterials, the inactivation of nanomaterials, the effect of oxide moiety which formed after nanomaterials absorbing ultraviolet light and membrane retention.
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Bobrinetskiy, Ivan, Marko Radovic, Francesco Rizzotto, Priya Vizzini, Stefan Jaric, Zoran Pavlovic, Vasa Radonic, Maria Vesna Nikolic, and Jasmina Vidic. "Advances in Nanomaterials-Based Electrochemical Biosensors for Foodborne Pathogen Detection." Nanomaterials 11, no. 10 (October 13, 2021): 2700. http://dx.doi.org/10.3390/nano11102700.
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Electrochemical biosensors utilizing nanomaterials have received widespread attention in pathogen detection and monitoring. Here, the potential of different nanomaterials and electrochemical technologies is reviewed for the development of novel diagnostic devices for the detection of foodborne pathogens and their biomarkers. The overview covers basic electrochemical methods and means for electrode functionalization, utilization of nanomaterials that include quantum dots, gold, silver and magnetic nanoparticles, carbon nanomaterials (carbon and graphene quantum dots, carbon nanotubes, graphene and reduced graphene oxide, graphene nanoplatelets, laser-induced graphene), metal oxides (nanoparticles, 2D and 3D nanostructures) and other 2D nanomaterials. Moreover, the current and future landscape of synergic effects of nanocomposites combining different nanomaterials is provided to illustrate how the limitations of traditional technologies can be overcome to design rapid, ultrasensitive, specific and affordable biosensors.
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Philip, Reji, C. S. Suchand Sandeep, R. Seema, Shiji Krishnan, Panit Chantharasupawong, Nandakumar Kalarikkal, and Jayan Thomas. "Applications of Oxide Nanomaterials in Nonlinear Optics." MRS Proceedings 1454 (2012): 255–59. http://dx.doi.org/10.1557/opl.2012.1229.
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ABSTRACTNonlinear optical effects are revealed when strong light fields interact with matter. It has been shown that nanomaterials exhibit properties which are very different from the bulk, and in many cases, the nonlinear optical (NLO) efficiency of nanomaterials is found to be higher in comparison. Recently there has been substantial interest in developing novel NLO media for various applications. Even though several organic as well as inorganic materials have been studied in this connection, only a limited number of NLO reports exist for oxide nanomaterials. Therefore, in this paper we present results of NLO measurements recently conducted in our laboratory in three different oxide nanosystems. It is found that oxide nanomaterials are generally robust, and exhibit good NLO efficiencies, which make them potential candidates for photonic and optoelectronic applications.
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Tang, Xiaosheng, Ping Tang, Shihui Si, and Liangliang Liu. "Adsorption and removal of bisphenol A from aqueous solution by p-phenylenediamine modified magnetic graphene oxide." Journal of the Serbian Chemical Society 82, no. 1 (2017): 39–50. http://dx.doi.org/10.2298/jsc160430095t.
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p-Phenylenediamine functionalized magnetic graphene oxide nanocomposites (PPD-MGO) were prepared and utilized in the adsorption and removal of bisphenol A in aqueous solution. The novel nanomaterials were characterized by transmission electron microscopy (TEM), Fourier infrared spectrometry (FT-IR) and vibrating sample magnetometer (VSM). The factors affected the adsorption of bisphenol A including adsorption time, temperature and pH of solution, adsorption kinetics and isotherms were all investigated. The results showed that PPD-MGO nanomaterial exhibited good adsorption ability for bisphenol A and good resuability. The maximum adsorption capacity reached 155.0 mg g-1 at 45?C and pH 7. The removal rate was 99.2 % after three times of adsorption with new nanomaterials. After five cycles adsorption, the adsorption capacity of PPD-MGO remained at 94.0 %. The adsorption of bisphenol A was found that fitted pseudo second order kinetics equations and the Freundlich adsorption model. The experimental results showed the PPD-MGO nanomaterial had a good adsorption ability to remove organic compounds in aqueous solution.
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Lu, Haijiao, Jingkang Wang, Marco Stoller, Ting Wang, Ying Bao, and Hongxun Hao. "An Overview of Nanomaterials for Water and Wastewater Treatment." Advances in Materials Science and Engineering 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/4964828.
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Due to the exceptional characteristics which resulted from nanoscale size, such as improved catalysis and adsorption properties as well as high reactivity, nanomaterials have been the subject of active research and development worldwide in recent years. Numerous studies have shown that nanomaterials can effectively remove various pollutants in water and thus have been successfully applied in water and wastewater treatment. In this paper, the most extensively studied nanomaterials, zero-valent metal nanoparticles (Ag, Fe, and Zn), metal oxide nanoparticles (TiO2, ZnO, and iron oxides), carbon nanotubes (CNTs), and nanocomposites are discussed and highlighted in detail. Besides, future aspects of nanomaterials in water and wastewater treatment are discussed.
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Beyene, Anteneh Marelign, Mohammad Moniruzzaman, Adhimoolam Karthikeyan, and Taesun Min. "Curcumin Nanoformulations with Metal Oxide Nanomaterials for Biomedical Applications." Nanomaterials 11, no. 2 (February 11, 2021): 460. http://dx.doi.org/10.3390/nano11020460.
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In the past few decades, curcumin, a natural polyphenolic phytochemical, has been studied for treating a wide variety of diseases. It has shown promising results as a potential curative agent for a variety of diseases. However, its inherent limitations, such as poor aqueous solubility, poor absorbability, fast metabolic rate, and quick elimination from the body, have limited its application beyond preclinical studies. A huge number of studies have been made to address the issues of curcumin and to maximally utilize its potentials. Many review articles have tried to assess and summarize different nanocarriers, especially organic nanocarriers, for nanoformulations with curcumin. Nevertheless, few exclusive reviews on the progress in nanoformulation of curcumin with inorganic nanomaterials have been made. In this review, we present an exclusive summary of the progress in nanoformulation of curcumin with metal oxide nanoparticles. The beneficial feature of the metal oxide nanoparticles used in the curcumin nanoformulation, the different approaches followed in formulating curcumin with the metal oxides, and the corresponding results, protective effect of curcumin from different metal oxide caused toxicities, and concluding remarks are presented in the review.
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Chang, Han-Wei, Song-Chi Chen, Pei-Wei Chen, Feng-Jiin Liu, and Yu-Chen Tsai. "Constructing Morphologically Tunable Copper Oxide-Based Nanomaterials on Cu Wire with/without the Deposition of Manganese Oxide as Bifunctional Materials for Glucose Sensing and Supercapacitors." International Journal of Molecular Sciences 23, no. 6 (March 18, 2022): 3299. http://dx.doi.org/10.3390/ijms23063299.
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Morphologically tunable copper oxide-based nanomaterials on Cu wire have been synthesized through a one-step alkali-assisted surface oxidation process for non-enzymatic glucose sensing. Subsequently, copper oxide-based nanomaterials on Cu wire as a supporting matrix to deposit manganese oxide for the construction of heterostructured Mn-Cu bimetallic oxide architectures through spontaneous redox reaction in the KMnO4 solution for supercapacitors. Field emission scanning electron microscopy (FESEM), field emission transmission electron microscopy (FETEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) confirmed that morphological and phase transformation from Cu(OH)2 to CuO occurred in copper oxide-based nanomaterials on Cu wire with different degrees of growth reaction. In non-enzymatic glucose sensing, morphologically tunable copper oxide-based nanomaterials owned the high tunability of electrocatalytically active sites and intrinsic catalytic activity to meet efficient glucose electrooxidation for obtaining promoted non-enzymatic glucose sensing performances (sensitivity of 2331 μA mM−1 cm−2 and the limit of detection of 0.02 mM). In the supercapacitor, heterostructured Mn–Cu bimetallic oxide-based nanomaterials delivered abundant redox-active sites and continuous conductive network to optimize the synergistic effect of Mn and Cu redox species for boosting the pseudo-capacitance performance (areal capacitance value of 79.4 mF cm−2 at 0.2 mA cm−2 current density and capacitance retention of 74.9% after 1000 cycles). It concluded that morphologically tunable copper oxide-based nanomaterials on Cu wire with/without deposition of manganese oxide could be good candidates for the future design of synergistic multifunctional materials in electrochemical techniques.
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Abdallh, Mustafa, Zainab Hussain, Hamsa Thamer, Ali Abd Ali, Emad Yousif, and Salam Mohammed. "Nanomaterials and Energy Storage in a Glance: a Review." Al-Nahrain Journal of Science 24, no. 2 (June 1, 2021): 21–26. http://dx.doi.org/10.22401/anjs.24.2.04.
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The challenge to provide a powerful instrument with a high energy conversion is of a great importance to our modern society, not only in terms of conversion but in high-capacity storage derived by the increase for energy demand. In addition, the environmental impact of these new technologies to create a green and sustainable environment. One of these green technologies is the use of dye-sensitized solar cells to produce energy and lithium-ion batteries to store the generated energy. The need for high electronic mobility and high surface volume and activity, nano metal oxide was investigated as alternative or a new material in generation and conversion of energy. For this purpose, many metal oxides were explored especially Zinc oxide (ZnO) and titanium oxide (TiO2) due to their electronic characteristics.
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Liou, Saou-hsing, Wei-Jin Li, and Wei-Te Wu. "P.1.26 Biomarkers of health effects in nanomaterials workers: updated status of nanoepidemiology." Occupational and Environmental Medicine 76, Suppl 1 (April 2019): A84.2—A84. http://dx.doi.org/10.1136/oem-2019-epi.228.
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The first article ‘Epidemiological Study of Health Hazards among Workers Handling Engineered Nanomaterials.’ was published on J Nanopart Res in 2012, and the first review article ‘Assessing the first wave of epidemiological studies of nanomaterial workers’ was published on J Nanopart Res in 2015. Until now, 29 epidemiological studies were published in peer-reviewed scientific journal. In addition, 5 epidemiological studies were traced but unpublished in the peer-reviewed journal, including 1 PhD. thesis and 4 conference abstracts. Most of these studies involved single nanomaterial exposure, for example, 8 articles for carbon nanotubes (MWCNT), 7 articles for titanium dioxide, 1 article for iron oxides, nano calcium carbonate, nano zinc oxide, and nanocomposite, but 6 studies from Taiwan involved multiple exposures. Two studies did not mention the specific components of nanoparticles. Most of these studies were done in Europe (14), followed by Asia (10), USA (2) and Australia (1).Generally, biomarkers were used as the outcomes variables to elaborate the health hazards of nanomaterials, except for 1 study surveyed work-related symptoms and diseases worsen by work. Exhaled breath condensate (EBC) and serum were the most frequently used biospecimen. All 26 cross-sectional studies and 1 six-month longitudinal panel study showed positive relationship between nanomaterials exposures and various biomarkers. Positive health effects include: 1. elevation of lung fibrosis markers and lung inflammation markers; 2. elevation of cardiovascular injury markers and abnormal HRV; 3. elevation of EBC nucleic acid, lipid and protein oxidative markers; 4. Increased immune markers; 5. changes in the ncRNA and mRNA expression, reduced global methylation, and specific gene methylation.This review provides some insight into potentially adverse effects that might be related to nanomaterial exposures and provides a foundation for future work. We expect more longitudinal studies with repeated measurements to explore chronic and cumulative effects of nanomaterial exposure.
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Zhang, Y., T. Nayak, H. Hong, and W. Cai. "Biomedical Applications of Zinc Oxide Nanomaterials." Current Molecular Medicine 13, no. 10 (November 2013): 1633–45. http://dx.doi.org/10.2174/1566524013666131111130058.
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Yan, Xiaodong, Lihong Tian, Xinyu Tan, Minjie Zhou, Lei Liu, and Xiaobo Chen. "Modifying oxide nanomaterials' properties by hydrogenation." MRS Communications 6, no. 3 (September 2016): 192–203. http://dx.doi.org/10.1557/mrc.2016.33.
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Xu, Bingyan, Mingbo Zheng, Hao Tang, Zixia Chen, Yao Chi, Lei Wang, Lan Zhang, Yiyi Chen, and Huan Pang. "Iron oxide-based nanomaterials for supercapacitors." Nanotechnology 30, no. 20 (March 12, 2019): 204002. http://dx.doi.org/10.1088/1361-6528/ab009f.
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Ding, Binbin, Jun Yue, Pan Zheng, Ping’an Ma, and Jun Lin. "Manganese oxide nanomaterials boost cancer immunotherapy." Journal of Materials Chemistry B 9, no. 35 (2021): 7117–31. http://dx.doi.org/10.1039/d1tb01001h.
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This review summarized the recent advances of manganese oxide nanomaterials for cancer immunotherapy, covering adjusting an immunosuppressive tumor microenvironment, inducing immunogenic cell death, immunoadjuvants for nanovaccines and so on.
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Shen, Tong, Zhong Li, Yue Jiang, and Zai-Gang Luo. "Synthesis and catalytic performance of graphene oxide-Au nanorings composites." Functional Materials Letters 12, no. 03 (May 16, 2019): 1950028. http://dx.doi.org/10.1142/s1793604719500280.
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A simple and facile method is described for the in situ synthesis of graphene oxide-Ag nanoplates (GO-AgNPs) hybrid structure and then served as sacrificial templates for producing graphene oxide-Au nanorings (GO-AuNRs) by galvanic replacement taken place on the GO surface. The catalytic activity of the resulting hybrid nanomaterial has been investigated for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with sodium borohydride (NaBH4). The results showed that the rate constant of GO-AuNRs nanomaterials was 0.205[Formula: see text]min[Formula: see text] and the samples showed significant enhancement in catalytic activity.
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Lee, Jin Ah, Won Jun Lee, Joonwon Lim, and Sang Ouk Kim. "N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes." Nanomaterials 11, no. 8 (July 22, 2021): 1882. http://dx.doi.org/10.3390/nano11081882.
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Metal oxide nanoparticles supported on heteroatom-doped graphitic surfaces have been pursued for several decades for a wide spectrum of applications. Despite extensive research on functional metal oxide nanoparticle/doped carbon nanomaterial hybrids, the role of the heteroatom dopant in the hybridization process of doped carbon nanomaterials has been overlooked. Here, the direct growth of MnOx and RuOx nanoparticles in nitrogen (N)-doped sites of carbon nanotubes (NCNTs) is presented. The quaternary nitrogen (NQ) sites of CNTs actively participate in the nucleation and growth of the metal nanoparticles. The evenly distributed NQ nucleation sites mediate the generation of uniformly dispersed <10 nm diameter MnOx and RuOx nanoparticles, directly decorated on NCNT surfaces. The electrochemical performance of the resultant hybridized materials was evaluated using cyclic voltammetry. This novel hybridization method using the dopant-mediated nucleation and growth of metal oxides suggests ways that heteroatom dopants can be utilized to optimize the structure, interface and corresponding properties of graphitic carbon-based hybrid materials.
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Matulewicz, Karolina, Łukasz Kaźmierski, Marek Wiśniewski, Szymon Roszkowski, Krzysztof Roszkowski, Oliwia Kowalczyk, Archi Roy, Bartosz Tylkowski, and Anna Bajek. "Ciprofloxacin and Graphene Oxide Combination—New Face of a Known Drug." Materials 13, no. 19 (September 23, 2020): 4224. http://dx.doi.org/10.3390/ma13194224.
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Drug modification with nanomaterials is a new trend in pharmaceutical studies and shows promising results, especially considering carbon-based solutions. Graphene and its derivatives have attracted much research interest for their potential applications in biomedical areas as drug modifiers. The following work is a comprehensive study regarding the toxicity of ciprofloxacin (CIP) modified by graphene oxide (GO). The influence on the morphology, viability, cell death pathway and proliferation of T24 and 786-0 cells was studied. The results show that ciprofloxacin modified with graphene oxide (CGO) shows the highest increase in cytotoxic potential, especially in the case of T24 cells. We discovered a clear connection between CIP modification with GO and the increase in its apoptotic potential. Our results show that drug modification with carbon-based nanomaterials might be a promising strategy to improve the qualities of existing drugs. Nevertheless, it is important to remember that cytotoxicity effects are highly dependent on dose and nanomaterial size. It is necessary to conduct further research to determine the optimal dose of GO for drug modification.
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Abu-Salah, Khalid, Salman A. Alrokyan, Muhammad Naziruddin Khan, and Anees Ahmad Ansari. "Nanomaterials as Analytical Tools for Genosensors." Sensors 10, no. 1 (January 26, 2010): 963–93. http://dx.doi.org/10.3390/s100100963.
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Nanomaterials are being increasingly used for the development of electrochemical DNA biosensors, due to the unique electrocatalytic properties found in nanoscale materials. They offer excellent prospects for interfacing biological recognition events with electronic signal transduction and for designing a new generation of bioelectronic devices exhibiting novel functions. In particular, nanomaterials such as noble metal nanoparticles (Au, Pt), carbon nanotubes (CNTs), magnetic nanoparticles, quantum dots and metal oxide nanoparticles have been actively investigated for their applications in DNA biosensors, which have become a new interdisciplinary frontier between biological detection and material science. In this article, we address some of the main advances in this field over the past few years, discussing the issues and challenges with the aim of stimulating a broader interest in developing nanomaterial-based biosensors and improving their applications in disease diagnosis and food safety examination.
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Renero-Lecuna, Carlos, Nerea Iturrioz-Rodríguez, Eloisa González-Lavado, Esperanza Padín-González, Elena Navarro-Palomares, Lourdes Valdivia-Fernández, Lorena García-Hevia, Mónica L. Fanarraga, and Lorena González-Legarreta. "Effect of Size, Shape, and Composition on the Interaction of Different Nanomaterials with HeLa Cells." Journal of Nanomaterials 2019 (February 4, 2019): 1–11. http://dx.doi.org/10.1155/2019/7518482.
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The application of nanomaterials in the fields of medicine and biotechnology is of enormous interest, particularly in the areas where traditional solutions have failed. Unfortunately, there is very little information on how to optimize the preparation of nanomaterials for their use in cell culture and on the effects that these can trigger on standard cellular systems. These data are pivotal in nanobiotechnology for the development of different applications and to evaluate/compare the cytotoxicity among the different nanomaterials or studies. The lack of information drives many laboratories to waste resources performing redundant comparative tests that often lead to partial answers due to differences in (i) the nature of the start-up material, (ii) the preparation, (iii) functionalization, (iv) resuspension, (v) the stability/dose of the nanomaterial, etc. These variations in addition to the different analytical systems contribute to the artefactual interpretation of the effects of nanomaterials and to inconsistent conclusions between different laboratories. Here, we present a brief review of a wide range of nanomaterials (nanotubes, various nanoparticles, graphene oxide, and liposomes) with HeLa cells as a reference cellular system. These human cells, widely used as cellular models for many studies, represent a reference system for comparative studies between different nanomaterials or conditions and, in the last term, between different laboratories.