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Journal articles on the topic 'Nancomposite materials'

Author: Grafiati

Published: 28 May 2022

Last updated: 18 July 2025

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devi, R. Durga, and A. Ganapathi. "Se-doped SiO2 nancomposite material synthesis, characterization and multi applications." Materials Science for Energy Technologies 5 (2022): 161–70. http://dx.doi.org/10.1016/j.mset.2022.01.004.

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Lenar, Nikola, Robert Piech, and Beata Paczosa-Bator. "Potentiometric Sensor with High Capacity Composite Composed of Ruthenium Dioxide and Poly(3,4-ethylenedioxythiophene) Polystyrene Sulfonate." Materials 14, no. 8 (2021): 1891. http://dx.doi.org/10.3390/ma14081891.

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This work presents the first-time application of the ruthenium dioxide–poly(3,4-ethylenedioxythiophene) polystyrene sulfonate high-capacity composite material as a mediation layer in potassium selective electrodes, which turned out to significantly enhance the electrical and analytical parameters of the electrodes. The idea was to combine the properties of two different types of materials: a conducting polymer, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate, and a metal oxide, ruthenium dioxide, in order to obtain the material for a solid-contact layer of great electrical and physicochemical parameters. The preparation method for composite material proposed in this work is fast and easy. The mediation layer material was examined using a scanning electron microscope and chronopotentiometry in order to confirm that all requirements for mediation layers materials were fulfilled. Ruthenium dioxide–poly(3,4-ethylenedioxythiophene) polystyrene sulfonate nancomposite material turned out to exhibit remarkably high electrical capacitance (of approximately 17.5 mF), which ensured great performance of designed K+-selective sensors. Electrodes of electrical capacity equal to 7.2 mF turned out to exhibit fast and stable (with only 0.077 mV potential change per hour) potentiometric responses in the wide range of potassium ion concentrations (10−6 M to 10−1 M). The electrical capacity of ruthenium dioxide–poly(3,4-ethylenedioxythiophene) polystyrene sulfonate-contacted electrodes characterized by electrical capacitance parameters was the highest reported so far for this type of sensor.

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Gul, Saima, Shahid Ali Khan, Zulfiqar Ahmad Rehan, et al. "Antibacterial CuO-PES-CA nancomposite membranes supported Cu0 nanoparticles for water permeability and reduction of organic pollutants." Journal of Materials Science: Materials in Electronics 30, no. 11 (2019): 10835–47. http://dx.doi.org/10.1007/s10854-019-01427-5.

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KARBASI, MARYAM, MEHDI RAZAVI, MINA AZADI, and LOBAT TAYEBI. "DEVELOPMENT AND CHARACTERIZATION OF SiC–Al2O3–Al CERAMIC MATRIX NANOCOMPOSITE POWDER." Nano 08, no. 06 (2013): 1350059. http://dx.doi.org/10.1142/s1793292013500598.

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In this study, SiC – Al 2 O 3– Al ceramic matrix nanocomposite powder was successfully synthesized employing mechanical alloying technique, through mechanochemical reaction among Silicon dioxide (SiO2), Carbon (C) and Aluminum (Al). For the commercial purposes, the materials ( SiO 2, C and Al powders) and also the method of synthesis (mechanical alloying) is considered to be cost effective for the production of SiC – Al 2 O 3– Al nanocomposite. Addition of alumina ( Al 2 O 3) and aluminum to silicon carbide (SiC) in a nancomposite form can improve the fracture toughness, strength and fatigue crack resistance of SiC and make it a leading material for many commercial applications specially by considering the cost-effective method of production. The structural evaluation of powder particles after different milling times was conducted by X-ray diffractometry (XRD), and scanning electron microscopy (SEM). The results showed that during ball milling the SiO 2, C and Al reacted with a combustion mode producing SiC – Al 2 O 3– Al nanocomposite after 24 h ball milling and annealing at the temperature of 920°C. The crystallite sizes of phases remained in nanometric scale after annealing at 920°C for 1 h. Based on our investigation, it was revealed that ball milling and annealing process decreases the temperature of reaction between SiO 2 and C from 1500°C to 920°C.

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Afkhami, Abbas, Hosein Khoshsafar, Hasan Bagheri, and Tayyebeh Madrakian. "Facile simultaneous electrochemical determination of codeine and acetaminophen in pharmaceutical samples and biological fluids by graphene–CoFe2O4 nancomposite modified carbon paste electrode." Sensors and Actuators B: Chemical 203 (November 2014): 909–18. http://dx.doi.org/10.1016/j.snb.2014.07.031.

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Cheshme Khavar, Amir Hossein, Gholamreza Moussavi, Ali Reza Mahjoub, and Mohammad Satari. "Facile preparation of multi-doped TiO2/rGO cross-linked 3D aerogel (GaNF@TGA) nancomposite as an efficient visible-light activated catalyst for photocatalytic oxidation and detoxification of atrazine." Solar Energy 173 (October 2018): 848–60. http://dx.doi.org/10.1016/j.solener.2018.08.034.

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Lovett, Adam J., Ahmed Kursumovic, Siân Dutton, et al. "Lithium-based vertically aligned nancomposite films incorporating Li_xLa_0.32(Nb_0.7Ti_0.32)O₃ electrolyte with high Li⁺ ion conductivity." APL Materials 10, no. 5 (2022): 051102. http://dx.doi.org/10.1063/5.0086844.

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Vertically aligned nanocomposite (VAN) thin films have shown strong potential in oxide nanoionics but are yet to be explored in detail in solid-state battery systems. Their 3D architectures are attractive because they may allow enhancements in capacity, current, and power densities. In addition, owing to their large interfacial surface areas, the VAN could serve as models to study interfaces and solid-electrolyte interphase formation. Here, we have deposited highly crystalline and epitaxial vertically aligned nanocomposite films composed of a LixLa0.32±0.05(Nb0.7±0.1Ti0.32±0.05)O3±δ-Ti0.8±0.1Nb0.17±0.03O2±δ-anatase [herein referred to as LL(Nb, Ti)O-(Ti, Nb)O2] electrolyte/anode system, the first anode VAN battery system reported. This system has an order of magnitude increased Li+ ionic conductivity over that in bulk Li3xLa1/3−xNbO3 and is comparable with the best available Li3xLa2/3−xTiO3 pulsed laser deposition films. Furthermore, the ionic conducting/electrically insulating LL(Nb, Ti)O and electrically conducting (Ti, Nb)O2 phases are a prerequisite for an interdigitated electrolyte/anode system. This work opens up the possibility of incorporating VAN films into an all solid-state battery, either as electrodes or electrolytes, by the pairing of suitable materials.

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Liu, Yan, Rui Feng Li, Hua Xin Peng, Andy Limmack, and Zhi Wu Han. "Damping Properties of Cups-Stacked Carbon Nanotubes (CSCNTs)/RTM6 Composites." Advanced Materials Research 535-537 (June 2012): 210–13. http://dx.doi.org/10.4028/www.scientific.net/amr.535-537.210.

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Carbon nanotubes have better physical and mechanical behaviors than the traditional materials, in this study cups-stacked carbon nanotubes (CSCNTs) were filled into epoxy nancomposites to fabricate CSCNTs/epoxy nanocomposites. RTM6 was used by epoxy resin system. The cups-stacked carbon nanotubes (CSCNTs) were dispersed into the RTM6 matrix. In this study, damping properties of the CSCNTs/RTM6 were measured; effect of different weight percentages of the CSCNTs was investigated. And the morphologies of fracture surface of CSCNTs/epoxy nanocomposites were observed by scanning electron microscope (SEM); damping behaviors of the nanocomposites were studied by DMA tester at frequency domain.

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Wang, Runzhi, Huijie Li, Guangxu Ge, et al. "Montmorillonite-Based Two-Dimensional Nanocomposites: Preparation and Applications." Molecules 26, no. 9 (2021): 2521. http://dx.doi.org/10.3390/molecules26092521.

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Montmorillonite (Mt) is a kind of 2:1 type layered phyllosilicate mineral with nanoscale structure, large surface area, high cation exchange capacity and excellent adsorption capacity. By virtue of such unique properties, many scholars have paid much attention to the further modification of Mt-based two-dimensional (2D) functional composite materials, such as Mt-metal hydroxides and Mt-carbon composites. In this review, we focus on two typical Mt-2D nanocomposite: Mt@layered double hydroxide (Mt@LDH) and Mt@graphene (Mt@GR) and their fabrication strategies, as well as their important applications in pollution adsorption, medical antibacterial, film thermal conduction and flame-retardant. In principle, the prospective trend of the composite preparation of Mt-2D nancomposites and promising fields are well addressed.

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Yanchuk, O. M., O. V. Marchuk, I. A. Moroz, et al. "Femtosecond laser stimulated anisotropy of electrolytically produced CdS polymer nancomposites." Journal of Materials Science: Materials in Electronics 30, no. 19 (2019): 17741–46. http://dx.doi.org/10.1007/s10854-019-02124-z.

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Izaskun, Larraza, Alonso-Lerma Borja, Munduate Kizkitza González, et al. "Waterborne polyurethane and graphene/graphene oxidebased nanocomposites: Reinforcement and electrical conductivity." eXPRESS Polymer Letters 14, no. 11 (2020): 1018–33. https://doi.org/10.3144/expresspolymlett.2020.83.

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Polyurethane based materials show great potential for many applications, and their reinforcement with different kinds of nano-entities can improve their properties or supply them with new ones, widening their fields of applications to new opportunities. In this work, nanocomposites composed of a biobased waterborne polyurethane and carbonaceous reinforcements were prepared and characterized. Parting from graphite, graphene, and graphene oxide were obtained through a mechanical and a chemical route, respectively, and graphene oxide was reduced into graphene through a thermal process. Successful exfoliation, oxidation, and reduction processes were proven when characterizing graphene, graphene oxide, and reduced graphene oxide. Nancomposites reinforced with graphene and graphene oxide showed improved mechanical and thermomechanical properties, whereas they did not show electrical conductivity. Coatings of the systems with graphene and reduced graphene oxide were studied, to grant electrical properties to the composites. Electrical conductor materials were obtained after coating the systems, as shown by Electrostatic Force Microscopy and electrical conductivity measurements.

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Liu, Yanhui, Jicheng Zuo, Jie Qin, and Chengwu Li. "Structure and tensile properties of polypropylene/carbon nanotubes composites prepared by melt extrusion." Materials Science-Poland 32, no. 3 (2014): 442–47. http://dx.doi.org/10.2478/s13536-013-0198-1.

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AbstractPolypropylene/carbon nanotubes (PP/CNTs) nancomposites were prepared with a single screw extruder by adding maleic anhydride-grafted poplypropylene (PP-g-MAH) as compatibilizer to polypropylene (PP) with different amounts of carbon nanotubes (CNTs) in the range of 0.1–0.7 wt.%. Structure and morphology of the prepared samples were examined by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), polarizing light microscopy (PLM) and X-ray diffraction (XRD). The results showed that PP spherulites decreased in size when CNTs were introduced into the polymer. Mechanical properties of the samples were also studied. Tensile tests showed that with increasing amount of CNTs the strain at break decreased whereas the Young’s modulus was improved of 16.41 % to 36.05 % and tensile strength of 36.67 % to 64.70 % compared to pristine PP. The SEM microphotographs showed that majority of the CNTs were dispersed individually and oriented along the shear flow direction.

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Wang, Yanbin, and Qiong Su. "Synthesis of NiO/Ag nancomposites by micro-emulsion method and the capacitance performance as electrodes." Journal of Materials Science: Materials in Electronics 27, no. 5 (2016): 4752–59. http://dx.doi.org/10.1007/s10854-016-4355-2.

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Mosher, Brian P., and Taofang Zeng. "Synthesis and Characterization of Novel Organic-Inorganic Nancomposite Coatings." MRS Proceedings 788 (2003). http://dx.doi.org/10.1557/proc-788-l8.43.

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ABSTRACTIn this paper, we report the synthesis and characterization of three novel water-based nanocomposite coatings. Throughout the paper, these coatings will be referred to as coatings 1, 2 and 3. The coatings are silica-based and are sol-gel derived using surfactant assemblies, with aluminum perchlorate as a catalyst. After synthesis, curing causes cross-link polymerization of silica, forming Si-O-Si network. The formation of this 3-Dimensional network can be verified using Fourier Transform Infrared Spectroscopy (FTIR) and Transmission Electron Microscopy (TEM). Incorporating metal oxide nanoparticles gives the material unique properties.

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Smith, Joseph G., John W. Connell, Peter Lillehei, Kent A. Watson, and Craig M. Thompson. "Nanocomposite Films derived from Alkoxysilane Terminated Amide Acid Oligomers and Carbon Nanotubes." MRS Proceedings 733 (2002). http://dx.doi.org/10.1557/proc-733-t3.5.

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AbstractLow color, space environmentally stable, polymeric materials with sufficient electrical conductivity for static charge dissipation are of interest for potential applications on Gossamer spacecraft. One method of imparting electrical conductivity while maintaining optical clarity is through the use of single wall carbon nanotubes (SWNTs). Both theory and research on SWNTs have shown them to be conductive. However, SWNTs are very difficult to uniformly disperse in a polymer. The approach described herein was to use oligomers endcapped with functional groups that could condense with functionalities present on purified, laser ablated SWNTs. Low color, radiation resistant amide acid oligomers endcapped with trialkoxysilane groups were combined with SWNTs. Since the SWNTs were purified by an oxidative process (nitric/sulfuric acid treatment), they have functionalities such as hydroxyl and carboxylic acid groups that can condense with the terminal alkoxysilane groups. After mixing at room temperature, the mixtures were used to cast films that were subsequently stage-cured up to 300°C for 1 hour in air. During this thermal treatment, imidization and condensation occurred. The chemistry, physical, and mechanical properties of the resulting nancomposite films will be presented.

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Yellatur, Chandra Sekhar, Raghavendra Padmasale, Maiyalagan T, and Subramanyam Sarma Loka. "Facile electrooxidation of ethanol on reduced graphene oxide supported Pt-Pd bimetallic nanocomposite surfaces in acidic media." Nanotechnology, May 9, 2022. http://dx.doi.org/10.1088/1361-6528/ac6df7.

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Abstract Development of electrocatalysts with extended homogeneity and improved metal–support interactions is of urgent scientific need in the context of electrochemical energy applications. Herein, bimetallic Pt-Pd nanoparticles with good homogeneity are fabricated using a convenient solution phase chemical reduction method onto a reduced graphene oxide (rGO) support. X-ray diffraction studies revealed that Pt-Pd/rGO possesses the crystallite size of 3.1 nm. The efficacies of Pt-Pd/rGO catalyst (20 wt% Pt + 10 wt% Pd on rGO support, Pt:Pd atomic ratio = 1:1) towards ethanol electrooxidation reaction (EOR) are evaluated in acidic conditions by cyclic voltammetry using catalyst-coated glassy carbon electrode as a working electrode. With the better dispersion on rGO support the Pt-Pd/rGO nancomposite catalyst exhibit highest mass specific activity (0.358 mA/µg-Pt) which is observed to be 1.9 times of similarly synthesized 20 wt% Pt/rGO (0.189 mA/µg-Pt) and 2.5 times of commercial 20 wt% Pt/C (0.142 mA/µg-Pt), respectively. Apart from the observed improved EOR activity, the Pt-Pd/rGO catalyst exhibited better stability than Pt/rGO and Pt/C catalysts. Strong synergy offered by Pt, Pd and rGO support could contribute to the observed higher EOR activity of Pt-Pd/rGO.

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Aranda, P., J. C. Galván, and E. Ruiz-Hitzky. "Microwave Assisted Blending-Intercalation of Ion-Conductor Polymers into Layered Silicates." MRS Proceedings 519 (1998). http://dx.doi.org/10.1557/proc-519-375.

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AbstractOrgano-inorganic hybrid nancomposites derived from poly(ethylene oxide) and montmorillonite silicate are prepared by an alternative procedure to classical polymer intercalation either from solutions or by polymer melt-intercalation. XRD, FTIR, DSC, elemental microanalysis and SEM techniques are applied for structural characterization of the resulting materials. The electrical properties of these nanocomposites are studied by means of the electrical impedance spectroscopy (EIS) showing enhanced ionic conductivity compared to similar samples prepared by intercalation from solution.

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