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Articles de revues sur le sujet « Nanocomposite metal oxides »

Auteur : Grafiati

Publié le 2 juin 2025

Mis à jour le 31 juillet 2025

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1

Tran, Quang Nhat, and Hyung Wook Choi. "Development of Cellulose Nanofiber—SnO2 Supported Nanocomposite as Substrate Materials for High-Performance Lithium-Ion Batteries." Nanomaterials 13, no. 6 (2023): 1080. http://dx.doi.org/10.3390/nano13061080.

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The large volumetric expansion of conversion-type anode materials (CTAMs) based on transition-metal oxides is still a big challenge for lithium-ion batteries (LIBs). An obtained nanocomposite was established by tin oxide (SnO2) nanoparticles embedding in cellulose nanofiber (SnO2-CNFi), and was developed in our research to take advantage of the tin oxide’s high theoretical specific capacity and the cellulose nanofiber support structure to restrain the volume expansion of transition-metal oxides. The nanocomposite utilized as electrodes in lithium-ion batteries not only inhibited volume growth

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Ferrier, David C., Janice Kiely, and Richard Luxton. "Metal Oxide Nanocatalysts for the Electrochemical Detection of Propofol." Micromachines 16, no. 2 (2025): 120. https://doi.org/10.3390/mi16020120.

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Propofol is one of the most widely used intravenous drugs for anaesthesia and sedation and is one of the most commonly used drugs in intensive care units for the sedation of mechanically ventilated patients. The correct dosage of propofol is of high importance, but there is currently a lack of suitable point-of-care techniques for determining blood propofol concentrations. Here, we present a cytochrome P450 2B6/carbon nanotube/graphene oxide/metal oxide nanocomposite sensor for discrete measurement of propofol concentration. Propofol is converted into a quinol/quinone redox couple by the enzym

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Modafferi, Vincenza, Saveria Santangelo, Michele Fiore, et al. "Transition Metal Oxides on Reduced Graphene Oxide Nanocomposites: Evaluation of Physicochemical Properties." Journal of Nanomaterials 2019 (April 11, 2019): 1–9. http://dx.doi.org/10.1155/2019/1703218.

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Transition metal oxides on reduced graphene oxide (TMO@rGO) nanocomposites were successfully prepared via a very simple one-step solvothermal process, involving the simultaneous (thermal) reduction of graphene oxide to graphene and the deposition of TMO nanoparticles over its surface. Texture and morphology, microstructure, and chemical and surface compositions of the nanocomposites were investigated via scanning electron microscopy, X-ray diffraction, micro-Raman spectroscopy, and X-ray photoelectron spectroscopy, respectively. The results prove that Fe2O3@rGO, CoFe2O4@rGO, and CoO@rGO are ob

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Nima, P. Golhar. "Nanocomposite Metal Oxide Semiconductors: A Short Review." International Journal on Science and Technology 13, no. 3 (2022): 1–7. https://doi.org/10.5281/zenodo.15282044.

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Nanocomposite Metal Oxide Semiconductors (NMOS) have emerged as a significant class of materials due to their enhanced physicochemical properties, offering promising applications in diverse fields such as gas sensing, photocatalysis, energy storage, and optoelectronics. This review presents a comprehensive overview of recent advancements in the synthesis, and functional performance of nanocomposite metal oxides. Emphasis is placed on the synergistic effects achieved by combining two or more metal oxides at the nanoscale, which often result in improved surface area, charge carrier mobility, and

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Das, Susmita, and Vimal Chandra Srivastava. "An overview of the synthesis of CuO-ZnO nanocomposite for environmental and other applications." Nanotechnology Reviews 7, no. 3 (2018): 267–82. http://dx.doi.org/10.1515/ntrev-2017-0144.

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Abstract In the field of environmental science, metal oxide nanocomposites have gained a great attention for both theoretical and experimental aspects of their upgradation because of their wide range of practical applications such as catalysts, sensors, hydrogen storages, and optoelectronics. Among all nanocomposites, Copper oxide-zinc oxide (CuO-ZnO) has attracted more research due to their excellent tunable catalytic, electrical, optical, and magnetic properties and environment-friendly nature. Coupling of one metal oxide semiconductor with another metal oxide semiconductor produces an enlar

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Kannan, Palanisamy, and Govindhan Maduraiveeran. "Metal Oxides Nanomaterials and Nanocomposite-Based Electrochemical Sensors for Healthcare Applications." Biosensors 13, no. 5 (2023): 542. http://dx.doi.org/10.3390/bios13050542.

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Wide-ranging research efforts have been directed to prioritize scientific and technological inventions for healthcare monitoring. In recent years, the effective utilization of functional nanomaterials in various electroanalytical measurements realized a rapid, sensitive, and selective detection and monitoring of a wide range of biomarkers in body fluids. Owing to good biocompatibility, high organic capturing ability, strong electrocatalytic activity, and high robustness, transition metal oxide-derived nanocomposites have led to enhancements in sensing performances. The aim of the present revie

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Putri, N. P., S. R. Wibowo, L. N. Maulida, et al. "Application of pani/metal oxide composite as an active material of liquified petroleum gas sensors." Digest Journal of Nanomaterials and Biostructures 18, no. 2 (2023): 485–93. http://dx.doi.org/10.15251/djnb.2023.182.485.

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Polyaniline (PANI) and metal oxides are two materials that have various applications, including active sensors. PANI provides several benefits over other conductive polymers, including ease of synthesis, affordability, and high conductivity. Depending on the benefits of PANI, here we report the fabrication of PANI/metal oxide composites as an active material for gas sensors, especially LPG. By oxidatively polymerizing aniline at room temperature, PANI was formed. PANI/metal oxide composites were produced by using an in-situ polymerization technique. The PANI/MgO and PANI/ZnO nanocomposites wer

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Ansari, Abu Saad, Griszha Azzahra, Fairuz Gianirfan Nugroho, Momin M. Mujtaba, and Abu Talha Aqueel Ahmed. "Oxides and Metal Oxide/Carbon Hybrid Materials for Efficient Photocatalytic Organic Pollutant Removal." Catalysts 15, no. 2 (2025): 134. https://doi.org/10.3390/catal15020134.

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Pharmaceuticals are increasingly significant contaminants in the environmental ecosystem, prompting the exploration of photocatalysis as a promising method for removing their pollutants. However, the application of semiconductor metal oxides as photocatalysts has been limited by issues such as rapid photocarrier recombination and high band gap energy. One emerging strategy to enhance the photocatalytic performance of metal oxides involves integrating them with carbon dots, which offer advantages including low toxicity, aqueous stability, increased surface area, cost effectiveness, biocompatibi

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Chen, Xue, and Yongcun Pei. "Application of Graphene-Based Nanocomposites in Electrochemical Detection of Heavy Metal Ions." Science of Advanced Materials 12, no. 3 (2020): 435–40. http://dx.doi.org/10.1166/sam.2020.3607.

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The purpose of this study was to explore the application of graphene-based nanocomposites in electrochemical detection of heavy metal ions. In this study, Graphene oxide (GO) was synthesized with improved Hummers method, and flower-like MoS2/rGO nanocomposite was synthesized with hydrothermal method and used as electrode modification material. In addition, scanning electron microscopy (SEM) and X-ray images were used to observe the characterization of the prepared samples and to detect the sensitivity of four heavy metal ions under optimal experimental conditions. The results showed that the r

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Sabeena, G., S. Rajaduraipandian, S. Gandhimathi, and G. Annadurai. "Synthesis and Characterization of Cerium Oxide Nanoparticles and Cerium oxide/silica Nanocomposites by using Adsorption of Dyes from Aqueous Solution." Research Journal of Chemistry and Environment 26, no. 9 (2022): 49–59. http://dx.doi.org/10.25303/2609rjce049059.

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Nanostructured cerium oxide (CeO2) usually identified by way of Nano ceria is an erratic earth metal oxide which plays a technologically significant role owing to its adaptable solicitations by way of automobile finish substances, oxide ion conductors in solid oxide cells, ultraviolet absorbents and glass-polishing materials. Metal oxides are excellent innovative adsorbents aimed at the elimination of dye ingredients. In this study, we describe a nanostructured cerium oxide nanocomposite adsorbent, which displays remarkable efficiency toward the removal of widely used Congo red (CR) from aqueo

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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 obt

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Sabo, Y. T., D. E. Boryo, I. Y. Chindo, and A. I. Habib. "Nanocomposites Transformed from Polystyrene Waste/Antimony, Barium and Nickel Oxides Nanoparticles with Improved Mechanical Properties." Journal of Applied Sciences and Environmental Management 25, no. 11 (2022): 1921–25. http://dx.doi.org/10.4314/jasem.v25i11.11.

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In this experiment, the oxide nanoparticles were synthesized via chemical precipitation and the nanocomposites were produced using in situ polymerization method with varying nanoparticles contents ranged from 0 to 5 g. The mechanical properties of the nanocomposites were investigated and compared with the values obtained for untreated polystyrene. It was observed that the mechanical properties were higher for the nanocomposites and increase with increasing nanoparticle concentrations in the samples. It can be observed that the untreated polystyrene gave a tensile strength of 945.25 N/mm2. At h

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Thangamuthu, Madasamy, Kuan Yu Hsieh, Priyank V. Kumar, and Guan-Yu Chen. "Graphene- and Graphene Oxide-Based Nanocomposite Platforms for Electrochemical Biosensing Applications." International Journal of Molecular Sciences 20, no. 12 (2019): 2975. http://dx.doi.org/10.3390/ijms20122975.

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Graphene and its derivatives such as graphene oxide (GO) and reduced GO (rGO) offer excellent electrical, mechanical and electrochemical properties. Further, due to the presence of high surface area, and a rich oxygen and defect framework, they are able to form nanocomposites with metal/semiconductor nanoparticles, metal oxides, quantum dots and polymers. Such nanocomposites are becoming increasingly useful as electrochemical biosensing platforms. In this review, we present a brief introduction on the aforementioned graphene derivatives, and discuss their synthetic strategies and structure–pro

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RAJINI, P. SUJA PREMA, R. MURUGESAN, and S. PERUMAL. "ROLE OF MOLYBDENUM TRIOXIDE ON THERMAL STABILITY OF POLYANILINE NANOCOMPOSITE." International Journal of Nanoscience 11, no. 03 (2012): 1250025. http://dx.doi.org/10.1142/s0219581x12500251.

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Molybdenum trioxide (MoO3) grains were coated with conducting organic polymer of polyaniline. The as-prepared nanocomposite samples were characterized by Fourier transformed infrared (FTIR) spectra, X-ray diffraction (XRD) and Thermogravimetry (TGA). The XRD curves shows that, [Formula: see text] have high crystallinity due to the presence of large number of sharp peaks. From the XRD pattern the particle size is evaluated by using Debye-Scherrer's formula and the average particle size of [Formula: see text] and [Formula: see text] nanocomposites are found to be 46 and 32 nm, respectively. This

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Das, Susmita, and Vimal Chandra Srivastava. "Hierarchical Nanostructured ZnO-CuO Nanocomposite and its Photocatalytic Activity." Journal of Nano Research 35 (October 2015): 21–26. http://dx.doi.org/10.4028/www.scientific.net/jnanor.35.21.

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Metal oxide nanocomposite (ZnO-CuO) was successfully synthesized by one step homogeneous coprecipitation method and further characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron micrograph (SEM), X-ray diffraction analysis (XRD) and UV-visible diffuse reflectance spectra. XRD analysis exhibited presence of pure copper oxide and zinc oxide within the nanocomposite. SEM analysis indicated that the ZnO-CuO nanocomposite was consisted of flower shaped ZnO along with leaf shaped CuO. Photocatalytic activity of nanocomposite was evaluated in terms of degradation of methy

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Sahoo, Sumanta, Ankur Sood, and Sung Soo Han. "Structural and magnetic properties of microwave-synthesized reduced graphene oxide/VO₂/Fe₂O₃ nanocomposite." Beilstein Journal of Nanotechnology 16 (June 20, 2025): 921–32. https://doi.org/10.3762/bjnano.16.70.

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Reduced graphene oxide (rGO)-assisted microwave (MW) synthesis of metal-oxide-based binary and ternary nanocomposites has recently gained considerable research attention. In this context, the current work demonstrates a facile rGO-supported solid-state MW synthetic route for fabricating a ternary nanocomposite of VO2, Fe2O3, and rGO. Here, the MW irradiation for 90 s was found to be suitable for the reduction and exfoliation of graphite oxide to form rGO, the reduction of V2O5 to form VO2, and the formation of Fe2O3 from ferrocene. X-ray diffraction and X-ray photoelectron spectroscopy analyse

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Kausar, Ayesha, Ishaq Ahmad, Tingkai Zhao, Osamah Aldaghri, Khalid H. Ibnaouf, and M. H. Eisa. "Multifunctional Polymeric Nanocomposites for Sensing Applications—Design, Features, and Technical Advancements." Crystals 13, no. 7 (2023): 1144. http://dx.doi.org/10.3390/cryst13071144.

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Among nanocomposite materials, multifunctional polymer nanocomposites have prompted important innovations in the field of sensing technology. Polymer-based nanocomposites have been successfully utilized to design high-tech sensors. Thus, conductive, thermoplast, or elastomeric, as well as natural polymers have been applied. Carbon nanoparticles as well as inorganic nanoparticles, such as metal nanoparticles or metal oxides, have reinforced polymer matrices for sensor fabrication. The sensing features and performances rely on the interactions between the nanocomposites and analytes like gases,

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Akl, M. Awwad, W. Amer Mohammad, and M. Al-aqarbeh Marwa. "TiO2-kaolinite nanocomposite prepared from the Jordanian Kaolin clay: Adsorption and thermodynamic of Pb(II) and Cd(II) ions in aqueous solution." Chemistry International 6, no. 4 (2020): 168–78. https://doi.org/10.5281/zenodo.3597558.

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Metal oxides nanoparticles/clay nanocomposites attractd much attention as an adsorbent for the removal of metal ions. TiO<sub>2</sub>/kaolinite nanocomposite was prepared from the raw Jordanian kaolin clay and evaluated for the removal of Pb(II) and Cd(II) ions from aqueous solutions through adsorption process. The removal percent (%R) of metal ions was determined as a function of contact time, solution pH, adsorbent dosage and temperature. The maximum adsorption capacity, q<sub>max</sub> for Pb(II) and Cd(II) ions as evaluated by Langmuir isotherm model were  333.33 mg/g and 250 mg/g, re

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Jakeer Husain, Kiran Pakmode, Narsappa Reddy, Anindya Jana, and Sayan Chatterjee. "Sensing and Electrical properties of Polyaniline /Nanocomposites For Gas Sensor Application." international journal of engineering technology and management sciences 7, no. 2 (2023): 108–11. http://dx.doi.org/10.46647/ijetms.2023.v07i02.013.

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Polyaniline nanocomposite using metal oxides have wide variety of applicability because of its enhanced properties to that of pure polyaniline. Here we employed titanium dioxide as the metal oxide to synthesize polyaniline composite (PANi-TiO2 ) through chemical oxidative polymerization in-situ. The obtained PANi-TiO2 is tested for powder X-Ray diffractometry (XRD), & Scanning electron microscopy(SEM).

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Su, Guofeng, Ximing Zhong, Songfa Qiu, Jiajin Fan, Hongjun Zhou, and Xinhua Zhou. "Preparation of mesoporous silica-based nanocomposites with synergistically antibacterial performance from nano-metal (oxide) and polydopamine." Nanotechnology 33, no. 15 (2022): 155702. http://dx.doi.org/10.1088/1361-6528/ac467a.

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Abstract In this work, a novel antibacterial nanocomposite system was developed using mesoporous silica (MSN) as an effective nanocarrier, and the resultant nanocomposites demonstrated remarkable antibacterial performance due to the synergistic effect among nano zinc oxides, silver nanoparticles, and polydopamine (PDA). The successful synthesis of MSN/ZnO@PDA/Ag nanocomposites was confirmed. The physicochemical properties and the morphologies of these nanocomposites were investigated. It was found that the particle size increased along with the evolution of these nanocomposites. Besides, nano

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Ho, Mui Yen, Poi Sim Khiew, Dino Isa, and Wee Siong Chiu. "Electrochemical studies on nanometal oxide-activated carbon composite electrodes for aqueous supercapacitors." Functional Materials Letters 07, no. 06 (2014): 1440012. http://dx.doi.org/10.1142/s1793604714400128.

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In present study, the electrochemical performance of eco-friendly and cost-effective titanium oxide ( TiO 2)-based and zinc oxide-based nanocomposite electrodes were studied in neutral aqueous Na 2 SO 3 electrolyte, respectively. The electrochemical properties of these composite electrodes were studied using cyclic voltammetry (CV), galvanostatic charge–discharge (CD) and electrochemical impedance spectroscopy (EIS). The experimental results reveal that these two nanocomposite electrodes achieve the highest specific capacitance at fairly low oxide loading onto activated carbon (AC) electrodes,

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Colburn, Thomas William, David William Collinson, and Reinhold Horst Dauskardt. "High Throughput Manufacturing of Highly Ordered Mesoporous Thin Film Oxides for Hybrid-Polymer Nanocomposite Dielectrics." ECS Meeting Abstracts MA2024-01, no. 21 (2024): 1283. http://dx.doi.org/10.1149/ma2024-01211283mtgabs.

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Highly ordered mesoporous metal oxide thin films have potential to become integrated into widely impactful dielectric materials due to the tunable properties of the oxide and its polymer filling; however, current manufacturing techniques to form the mesoporous oxide greatly limit scalable fabrication. Sol-gel mesoporous metal oxides generated via traditional processes require multi-day aging and high temperature, prolonged curing processes to yield controlled porosity at the expense of manufacturability. Moreover, high cost and unstable alkoxide precursors require precision over the solution p

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Malyshev, S. A., O. A. Shlyakhtin, G. N. Mazo, A. S. Loktev, A. G. Dedov, and I. I. Moiseev. "In situ synthesis of Co–Ni nanocomposite catalysts of the partial oxidation of methane from K2NiF4-like complex oxide precursors." Functional Materials Letters 10, no. 06 (2017): 1750071. http://dx.doi.org/10.1142/s1793604717500710.

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Oxide precursors NdCaCo[Formula: see text]NixOn ([Formula: see text]) are obtained by the solid-state synthesis method at 1100[Formula: see text]C. According to XRD analysis, the main components of these precursors are complex oxides with K2NiF4-like structure at [Formula: see text] and with rhombically distorted K2NiF4 structure at [Formula: see text]. A thermal decomposition of these precursors in the mixture of CH4/O[Formula: see text] at T [Formula: see text] 800[Formula: see text]C results in the formation of dense metal-oxide nanocomposite particles. As-obtained nanocomposites demonstrat

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Tiwari, Santosh K., Anukul K. Thakur, Amrita De Adhikari, Yanqiu Zhu, and Nannan Wang. "Current Research of Graphene-Based Nanocomposites and Their Application for Supercapacitors." Nanomaterials 10, no. 10 (2020): 2046. http://dx.doi.org/10.3390/nano10102046.

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This review acmes the latest developments of composites of metal oxides/sulfide comprising of graphene and its analogues as electrode materials in the construction of the next generation of supercapacitors (SCs). SCs have become an indispensable device of energy-storage modes. A prompt increase in the number of scientific accomplishments in this field, including publications, patents, and device fabrication, has evidenced the immense attention they have attracted from scientific communities. These efforts have resulted in rapid advancements in the field of SCs, focusing on the development of e

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Larichev, Timothy, Natalia Fedorova, Yuri Zakharov, Valerii Pugachev, Tatiana Sergina, and Liudmila Khitsova. "Catalytic thermo-oxidation of carbon matrix in the nanocomposite electrode material for supercapacitors preparation process." E3S Web of Conferences 460 (2023): 10041. http://dx.doi.org/10.1051/e3sconf/202346010041.

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The study of thermal oxidation in air of carbon matrix in the presence of nanosized particles of filler - cobalt oxide Co3O4, as well as mixed oxides NiCo2O4 and ZnxCo1-xOy was carried out. The particles of transition metal oxides were created by thermal decomposition of precursor compounds (azides and hydroxides). It is shown that vigorous oxidation in the air of the porous carbon matrix starts after the formation of Co3O4 at temperatures above 300 ° C. The intensity of oxidation is directly proportional to the filler concentration in the carbon-transition metal oxide composite system. Carbon

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Ngene, Peter. "Interface Induced Fast Ion Conduction in Complex Hydride/Oxide Nanocomposites: Interplay between Hydride and Oxide Properties." ECS Meeting Abstracts MA2023-02, no. 5 (2023): 886. http://dx.doi.org/10.1149/ma2023-025886mtgabs.

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Solid-state electrolytes are crucial for next generation batteries with high energy density, long lasting and improved safety. The compatibility of most solid electrolytes with metallic anodes such as Li and Na metals, and cathodes such as sulfur, makes them suitable for high-capacity batteries (e.g., Li-S). They also address the safety concerns of current batteries by eliminating the flammable organic solvents in liquid electrolytes and by preventing/limiting dendrite formation. The lithium and sodium containing complex metal hydrides (e.g., LiBH4, NaBH4, LiCB11H12) have recently gained atten

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Weilong, Wang, and Fu Xiaobo. "Efficient Removal of Cr(VI) with Fe/Mn Mixed Metal Oxide Nanocomposites Synthesized by a Grinding Method." Journal of Nanomaterials 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/514917.

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Fe/Mn mixed metal oxides were synthesized facilely by a grinding method and were characterized by TEM, XRD, XPS, and BET. The characterization results revealed that mixed metal oxides were mainly composed of not highly crystallized Fe2O3and Mn3O4nanoparticles with a diameter about 3–5 nm. The specific BET surface areas of the composite were affected by the amounts of KCl diluent in the preparation process and about 268 m2/g of the composite can be achieved. Compared with metal oxide adsorbents existent, the composites showed good adsorption capacity, stability, and regeneration activity for Cr

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Yuan, Ruoxin, Hao Wen, Li Zeng, Xi Li, Xingang Liu, and Chuhong Zhang. "Supercritical CO2 Assisted Solvothermal Preparation of CoO/Graphene Nanocomposites for High Performance Lithium-Ion Batteries." Nanomaterials 11, no. 3 (2021): 694. http://dx.doi.org/10.3390/nano11030694.

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Supercritical CO2 (scCO2) is often used to prepare graphene/metal oxide nanocomposite anodes for high performance lithium-ion batteries (LIBs) by the assisted solvothermal method due to its low viscosity, high diffusion, zero surface tension and good surface wettability. However, the formation mechanism of metal oxides and the combination mechanism between metal oxides and graphene in this system are superficial. In this work, a cobalt monoxide/graphene (CoO/G) nanocomposite is fabricated via the scCO2 assisted solvothermal method followed by thermal treatment. We elucidate the mechanism that

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Zhu, Sheng, and Yan Li. "Carbon-metal oxide nanocomposites as lithium-sulfur battery cathodes." Functional Materials Letters 11, no. 06 (2018): 1830007. http://dx.doi.org/10.1142/s1793604718300074.

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In rechargeable lithium-sulfur (Li-S) batteries, the conductive carbon materials with high surface areas can greatly enhance the electrical conductivity of sulfur cathode, and metal oxides can restrain the dissolution of lithium polysulfides within the electrolyte through strong chemical bindings. The rational design of carbon-metal oxide nanocomposite cathodes has been considered as an effective solution to increase the sulfur utilization and improve cycling performance of Li-S batteries. Here, we summarize the recent progresses in the carbon-metal oxide composites for Li-S battery cathodes.

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Kolya, Haradhan, and Chun-Won Kang. "Eco-Friendly Polymer Nanocomposite Coatings for Next-Generation Fire Retardants for Building Materials." Polymers 16, no. 14 (2024): 2045. http://dx.doi.org/10.3390/polym16142045.

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The increasing global commitment to carbon neutrality has propelled a heightened focus on sustainable construction materials, with wood emerging as pivotal due to its environmental benefits. This review explores the development and application of eco-friendly polymer nanocomposite coatings to enhance wood’s fire resistance, addressing a critical limitation in its widespread adoption. These nanocomposites demonstrate improved thermal stability and char formation properties by integrating nanoparticles, such as nano-clays, graphene oxide, and metal oxides, into biopolymer matrices. This signific

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Abla, Fatima, Yehya Elsayed, Nedal Abu Farha, et al. "Fabrication of High Surface Area TiO2-MoO3 Nanocomposite as a Photocatalyst for Organic Pollutants Removal from Water Bodies." Catalysts 13, no. 2 (2023): 362. http://dx.doi.org/10.3390/catal13020362.

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A nanocomposite (NC) of titanium (IV) oxide (TiO2) and molybdenum (VI) oxide (MoO3) was synthesized using a hydrothermal route. Detailed analyses using transmission electron microscopy, X-ray diffraction, X-ray fluorescence (XRF), Brunauer–Emmett–Teller (BET) isotherms, X-ray photoelectron spectroscopy, Raman, and diffuse reflectance infrared Fourier transform spectroscopy were carried out and confirmed the successful formation of pure TiO2-MoO3 (Ti-Mo) NC. The Ti-Mo NC possesses sizes in the range of 150–500 nm. XPS, Raman, and DRIFT shift measurements confirmed the formation of mixed oxide l

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Vattikuti, S. V. Prabhakar, Jaesool Shim, Nam Nguyen Dang, et al. "Enhanced Photocatalytic and Electrochemical Performance of MOF-Derived NiO-ZnO Oxide Composites for Wastewater Treatment and Sustainable Energy Storage." International Journal of Energy Research 2024 (April 1, 2024): 1–15. http://dx.doi.org/10.1155/2024/4589047.

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Solar energy is a crucial and sustainable resource, necessitating material optimization for efficient use in solar-driven applications, particularly photocatalysis. Mixed-metallic nanocomposites, notably those derived from metal-organic frameworks (MOFs), have emerged as promising functional materials for environmental remediation and electrochemical energy storage. MOFs provide unique platforms for synthesizing diverse nanostructures, incorporating metals, oxides, sulfides, and nitrides within a porous carbon matrix. These resulting nanocomposites exhibit high crystallinity, retained morpholo

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Jeong, Jae, Hye Hwang, Dalsu Choi, Byung Ma, Jaehan Jung, and Mincheol Chang. "Hybrid Polymer/Metal Oxide Thin Films for High Performance, Flexible Transistors." Micromachines 11, no. 3 (2020): 264. http://dx.doi.org/10.3390/mi11030264.

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Metal oxides (MOs) have garnered significant attention in a variety of research fields, particularly in flexible electronics such as wearable devices, due to their superior electronic properties. Meanwhile, polymers exhibit excellent mechanical properties such as flexibility and durability, besides enabling economic solution-based fabrication. Therefore, MO/polymer nanocomposites are excellent electronic materials for use in flexible electronics owing to the confluence of the merits of their components. In this article, we review recent developments in the synthesis and fabrication techniques

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Singhal, Rahul. "(Invited) Transition Metal Oxides and Sulfides for Supercapacitor Applications." ECS Meeting Abstracts MA2022-02, no. 1 (2022): 41. http://dx.doi.org/10.1149/ma2022-02141mtgabs.

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Energy produced by renewable energy sources need to be stored till required. Therefore, the development of high energy density energy storage systems is required to fulfil the energy needs around the world without any significant environmental impact. Recently, energy storage devices such as rechargeable batteries, fuel cells, and supercapacitors have attracted significant attention owing to their diverse applications in hybrid electric vehicles, energy management, and smart portable electronic devices. Rechargeable batteries such as lithium-ion batteries have been widely employed for various

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Simakin, Alexander V., Ruslan M. Sarimov, Veronika V. Smirnova, et al. "New Structural Nanocomposite Based on PLGA and Al2O3 NPs as a Balance between Antibacterial Activity and Biocompatibility with Eukaryotic Cells." Journal of Composites Science 6, no. 10 (2022): 298. http://dx.doi.org/10.3390/jcs6100298.

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Development of eco-friendly and biodegradable package materials is an important goal of modern science and international industry. Poly(lactic)-co-glycolic acid (PLGA) is suitable for this purpose. However, biocompatible materials may be contaminated with bacteria. This problem may be solved by the addition of metal oxides nanoparticles (NPs) with antibacterial properties. Although metal oxides NPs often show cytotoxicity against plant and mammalian cells, a new nanocomposite based on PLGA and aluminum oxide (Al2O3) NPs has been developed. The PLGA/Al2O3 NP composite has pronounced antibacteri

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Mary, B. Carmel Jeeva, J. Judith Vijaya, Radhika R. Nair, et al. "Reduced Graphene Oxide-Tailored CuFe2O4 Nanoparticles as an Electrode Material for High-Performance Supercapacitors." Journal of Nanomaterials 2022 (April 11, 2022): 1–15. http://dx.doi.org/10.1155/2022/9861440.

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Transition metal oxide-based magnetic nanocomposites attract great attention due to their unique properties and applications in the field of energy storage. Herein, we present a facile microwave procedure for the synthesis of CuFe2O4 (CF) and CuFe2O4 incorporated with reduced graphene oxide CuFe2O4/rGO (CG) as potential electrode materials for hybrid supercapacitor. The structure and morphology of CF and CG nanoparticles are examined. The electrochemical performance is studied in 6 M aqueous KOH electrolyte using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemica

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Meeying, Siriporn, Pinsuda Viravathana, Atchana Wongchaisuwat, and Siree Tangbunsuk. "Synthesis and Characterization of PdCoNi Nanocomposites Supported on Graphene as Anodic Electrocatalysts for Methanol Oxidation in Direct Methanol Fuel Cell." Key Engineering Materials 658 (July 2015): 190–94. http://dx.doi.org/10.4028/www.scientific.net/kem.658.190.

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PdCoNi nanocomposites supported on graphene (PdCoNi/G) have been obtained from chemical reduction of metal catalysts and graphite oxide (GO) with a strong reducing agent, followed by calcination at high temperature under N2 condition, and used for electrooxidation of methanol in direct methanol fuel cell. The morphologies and structural properties of electrocatalysts were examined by scanning electron microscopy (SEM) and X-ray diffraction (XRD). X-ray spectroscopy techniques (X-ray photoelectron spectroscopy XPS) was used to investigate the chemical state of the synthesized catalysts. The res

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Tenkyong, Tenzin, Neena Bachan, J. Raja, P. Naveen Kumar, and J. Merline Shyla. "Investigation of sol-gel processed CuO/SiO2 nanocomposite as a potential photoanode material." Materials Science-Poland 33, no. 4 (2015): 826–34. http://dx.doi.org/10.1515/msp-2015-0097.

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AbstractSynthesis and characterization of a highly efficient photoconductive nanocomposite comprising of two common metal oxides: copper oxide (CuO) and silicon dioxide (SiO2) are being reported in this paper. The CuO/SiO2 nanocomposite has been synthesized using a cost-effective and facile sol gel route. The structural, chemical and optical properties of the prepared samples have been studied using various characterization techniques. The UV-Vis analysis revealed better absorption in the case of the nanocomposite as compared to its parent materials. X-ray diffraction (XRD) analysis has been e

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Naurzkulova, Symbat Muratbekovna, Marina Vasilievna Arapova, Arcady Vladimirovich Ishchenko, et al. "Ni–Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: Effect of the synthesis methods on the structural and catalytic properties." Open Chemistry 19, no. 1 (2021): 696–708. http://dx.doi.org/10.1515/chem-2021-0062.

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Abstract Ethanol steam reforming catalyst’s precursors, i.e., nanocomposites of complex oxides with the general formula [Pr0.15Sm0.15Ce0.35Zr0.35O2 + LaMn0.45Ni0.45Ru0.1O3] (1:1 by mass), were synthesized by three different methods. It was shown that two synthesis methods – ultrasonic dispersion and sequential polymeric method, lead to the formation of the nanocomposite perovskite–fluorite system with the specific surface area up to 50 m2/g. Reduction of samples at 400–500°C lead to the formation of Ni–Ru alloy nanoparticles strongly bound with the surface of oxide nanocomposite. Catalytic tes

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Ibarra, José, María Jesus Aguirre, Rodrigo del Río та ін. "α-Fe2O3/, Co3O4/, and CoFe2O4/MWCNTs/Ionic Liquid Nanocomposites as High-Performance Electrocatalysts for the Electrocatalytic Hydrogen Evolution Reaction in a Neutral Medium". International Journal of Molecular Sciences 25, № 13 (2024): 7043. http://dx.doi.org/10.3390/ijms25137043.

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Transition metal oxides are a great alternative to less expensive hydrogen evolution reaction (HER) catalysts. However, the lack of conductivity of these materials requires a conductor material to support them and improve the activity toward HER. On the other hand, carbon paste electrodes result in a versatile and cheap electrode with good activity and conductivity in electrocatalytic hydrogen production, especially when the carbonaceous material is agglomerated with ionic liquids. In the present work, an electrode composed of multi-walled carbon nanotubes (MWCNTs) and cobalt ferrite oxide (Co

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Lin, Liyang, Susu Chen, Tao Deng, and Wen Zeng. "Oxygen-Deficient Stannic Oxide/Graphene for Ultrahigh-Performance Supercapacitors and Gas Sensors." Nanomaterials 11, no. 2 (2021): 372. http://dx.doi.org/10.3390/nano11020372.

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The metal oxides/graphene nanocomposites have great application prospects in the fields of electrochemical energy storage and gas sensing detection. However, rational synthesis of such materials with good conductivity and electrochemical activity is the topical challenge for high-performance devices. Here, SnO2/graphene nanocomposite is taken as a typical example and develops a universal synthesis method that overcome these challenges and prepares the oxygen-deficient SnO2 hollow nanospheres/graphene (r-SnO2/GN) nanocomposite with excellent performance for supercapacitors and gas sensors. The

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Febrian, Rizki, Ni Luh Wulan Septiani, Muhammad Iqbal, Sobih, Natalita Maulani Nursam, and Lia Muliani. "CV Performance of ZnO-Carbon Nanocomposite Based On ZIF-8 as Lithium-Ion Battery Anode." Journal of Physics: Conference Series 2705, no. 1 (2024): 012013. http://dx.doi.org/10.1088/1742-6596/2705/1/012013.

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Abstract Compositing between metal oxide and carbon is strategy to improve the performance of lithium-ion battery anode. This is due to the high theoretical capacity of metal oxides, carbon acts as a lithium ion accelerator and supports the structural stability of metal oxides. The advantages of the ZnO-Carbon nanocomposite anode based on ZIF-8 are its large surface area and porosity. The method used is non-solvothermal through precipitation at room temperature. After obtaining ZIF-8 powder, then it was carbonized at temperatures 600°C. The characterization used were SEM, EDS and TEM. The samp

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Rossignatti, Beatriz Cotting, Amanda Portes Vieira, Martin Schwellberger Barbosa, Luís Miguel Gomes Abegão, and Hugo José Nogueira Pedroza Dias Mello. "Thin Films of Polyaniline-Based Nanocomposites with CeO2 and WO3 Metal Oxides Applied to the Impedimetric and Capacitive Transducer Stages in Chemical Sensors." Polymers 15, no. 3 (2023): 578. http://dx.doi.org/10.3390/polym15030578.

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There is a recognized need for the development of cost-effective, stable, fast, and optimized novel materials for technological applications. Substantial research has been undertaken on the role of polymeric nanocomposites in sensing applications. However, the use of PANI-based nanocomposites in impedimetric and capacitive electrochemical sensors has yet to be understood. The present study aimed to explore the relationship between the sensitivity and linearity of electrochemical pH sensors and the composition of nanocomposites. Thin films of PANI/CeO2 and PANI/WO3 were deposited via spin coati

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Muruganantham, Rasu, Jeng-Shin Lu, and Wei-Ren Liu. "Spinel rGO Wrapped CoV2O4 Nanocomposite as a Novel Anode Material for Sodium-Ion Batteries." Polymers 12, no. 3 (2020): 555. http://dx.doi.org/10.3390/polym12030555.

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Binary mixed transition-based metal oxides have some of the most potential as anode materials for rechargeable advanced battery systems due to their high theoretical capacity and tremendous electrochemical performance. Nonetheless, binary metal oxides still endure low electronic conductivity and huge volume expansion during the charge/discharge processes. In this study, we synthesized a reduced graphene oxide (rGO)-wrapped CoV2O4 material as the anode for sodium ion batteries. The X-ray diffraction analyses revealed pure-phased CoV2O4 (CVO) rGO-wrapped CoV2O4 (CVO/rGO) nanoparticles. The capac

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Shilova, Olga A. "Ways of Controlling Structure and Properties of Sol-Gel-Derived Hybrid Micro- and Nanocomposite Materials." Advances in Science and Technology 45 (October 2006): 793–98. http://dx.doi.org/10.4028/www.scientific.net/ast.45.793.

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Technically useful hybrid micro- and nanocomposite materials might be prepared by solgel processing. Inorganic dopants (acids, metal salts) and organic modifiers (polyols, polyionens) as well as fillers (metal oxides, detonation diamond) were involved into the tetraethoxysilane (TEOS)- derived sols to modify sol-gel system properties. Influence of the above mentioned additives on parameters xerogels and films prepared (covering capacity, surface morphology, phase compositions, fractal parameters, and some others physicochemical properties) has been shown. Simultaneous use of dopants, organic m

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Mahmadnazarov, Sherzod Nazaralievich, and Mukhiddin Odiljonovich Atajonov. "NANOCOMPOSITE FILMS BASED ON THE ZITO (ZNO-IN2O3-SNO2) SYSTEM: PROSPECTS FOR THERMOELECTRIC CONVERSION." Research and implementation 2, no. 3 (2024): 152–57. https://doi.org/10.5281/zenodo.10775304.

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The text "Motivation: Search for new thermoelectric materials for high-temperature heat conversion up to 1000°C for the study of conductive metal oxides" examines the search for new materials capable of efficiently converting heat at high temperatures. Traditional thermoelectric materials do not have the necessary thermal stability. Research is focusing on N-type oxides, in particular ZITO oxide, which have so far been less studied than p-type oxides such as cobaltines. The use of nanocomposites and nanostructured objects can significantly improve heat conversion efficiency by reducing the

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Yeşiltepe Özcelik, Duygu, Burçak Ebin, Srecko Stopic, Sebahattin Gürmen, and Bernd Friedrich. "Mixed Oxides NiO/ZnO/Al2O3 Synthesized in a Single Step via Ultrasonic Spray Pyrolysis (USP) Method." Metals 12, no. 1 (2022): 73. http://dx.doi.org/10.3390/met12010073.

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Mixed oxides have received remarkable attention due to the many opportunities to adjust their interesting structural, electrical, catalytic properties, leading to a better, more useful performance compared to the basic metal oxides. In this study, mixed oxides NiO/ZnO/Al2O3 were synthesized in a single step via the ultrasonic spray pyrolysis method using nitrate salts, and the temperature effects of the process were investigated (400, 600, 800 °C). The synthesized samples were characterized by means of scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction and Raman sp

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Adeyemi, Jerry O., Damian C. Onwudiwe, and Adebola O. Oyedeji. "Biogenic Synthesis of CuO, ZnO, and CuO–ZnO Nanoparticles Using Leaf Extracts of Dovyalis caffra and Their Biological Properties." Molecules 27, no. 10 (2022): 3206. http://dx.doi.org/10.3390/molecules27103206.

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Biogenic metal oxide nanoparticles (NPs) have emerged as a useful tool in biology due to their biocompatibility properties with most biological systems. In this study, we report the synthesis of copper oxide (CuO), zinc oxide (ZnO) nanoparticles (NPs), and their nanocomposite (CuO–ZnO) prepared using the phytochemical extracts from the leaves of Dovyalis caffra (kei apple). The physicochemical properties of these nanomaterials were established using some characterization techniques including X-ray diffraction analysis (XRD), ultraviolet-visible spectroscopy (UV-vis), scanning electron microsco

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Altynbekova, Dinara, Yuliya Bespalko, Konstantin Valeev, et al. "Simple Approach to the Fabrication of Lanthanum Orthoniobates and Nanocomposites with Ni, Cu, and Co Metal Nanoparticles Using Supercritical Isopropanol." Journal of Composites Science 6, no. 9 (2022): 243. http://dx.doi.org/10.3390/jcs6090243.

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Orthoniobates of rare-earth elements are a promising group of materials attractive for the design of nanocomposite hydrogen separation membranes owing to a perspective type of proton conductivity, good mechanical properties, and high stability in H2O- and CO2-containing atmospheres. In general, the promising method involves the synthesis of nanocomposites with transition metals (Cu, Ni, and Cu-Ni alloys) and their oxides with high electronic conductivity. For the first time, lanthanum orthoniobates and nanocomposites with NiCu and NiCo nanoparticles were synthesized using alcohol solutions of

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Saharudin, Khairul, Srimala Sreekantan, Norfatehah Basiron, et al. "Bacteriostatic Activity of LLDPE Nanocomposite Embedded with Sol–Gel Synthesized TiO2/ZnO Coupled Oxides at Various Ratios." Polymers 10, no. 8 (2018): 878. http://dx.doi.org/10.3390/polym10080878.

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Metal oxide-polymer nanocomposite has been proven to have selective bactericidal effects against the main and common pathogens (Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli)) that can cause harmful infectious diseases. As such, this study looked into the prospect of using TiO2/ZnO with linear low-density polyethylene (LLDPE) to inactivate S. aureus and E. coli. The physical, structural, chemical, mechanical, and antibacterial properties of the nanocomposite were investigated in detail in this paper. The production of reactive species, such as hydr

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