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Artículos de revistas sobre el tema "Oxide composite"

Autor: Grafiati

Publicado: 11 de enero de 2025

Última modificación: 31 de julio de 2025

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1

Sugianto, Sugianto, Ngurah Made Dharma Putra, Endah F. Rahayu, et al. "Synthesis, Characterization, and Electrochemical Performance of Reduced Graphene Oxide-Metal (Cu,Zn)-Oxide Materials." Indonesian Journal of Science and Technology 8, no. 2 (2023): 329–44. http://dx.doi.org/10.17509/ijost.v8i2.56065.

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The reduced graphene oxide (rGO) and metal (Cu,Zn)-oxide composites were prepared using a one-step hydrothermal technique. The role of (Cu,Zn)-oxide on the physical and electrochemical properties of the composite was investigated. The composite consists of various shapes of ZnO nanoflowers and micro-spheres, as well as Cu-oxide nanoflakes and octahedron-like shapes. The (Cu,Zn)-oxides were formed in between the rGO layers and observed in the rGO-ZnO, rGO-CuO, and rGO-CuO-ZnO composites. The presence of ZnO, CuO, and rGO within the composite structure is also confirmed by the analyses of crysta

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2

Matveev, E. S. "Composite Solid Electrolytes." Membrany i membrannye tehnologii 14, no. 4 (2024): 263–75. http://dx.doi.org/10.31857/s2218117224040027.

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The review describes composite electrolytes based on classical salt matrix phases, and also shows the possibilities of creating composites using simple or complex oxide matrices, where simple substances, salts, simple and complex oxides are used as heterogeneous dopant. The magnitude of the composite effect of electrical conductivity is discussed from the point of view of various theories of its quantitative description. The reasons for the occurrence of the composite effect are summarized. The effect of increasing ionic conductivity is due to the disorder of the surface layer in the intergran

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3

Liang, Yong-Xin, Ze-Rong Ma, Si-Ting Yu, et al. "Preparation and property analysis of solid carbonate-oxide composite materials for an electrolyte used in low-temperature solid oxide fuel cell." Science and Technology for Energy Transition 77 (2022): 4. http://dx.doi.org/10.2516/stet/2022003.

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The oxide-carbonate composite electrolyte material with high ionic conductivity at low temperature has been thought that it can be used to develop LT-SOFC. However, the carbonate composite electrolyte is not easy to make it dense, especially mixing and packing oxide and carbonate to fabricate the composite electrolyte simply. In this article, rare-earth-doped CeO2 (RDC) (R = La, Sm, Gd, and Gd + Y) series samples were prepared by wet ball-milling, then sintered into fully dense and porous oxide bulk at 1500–1600 °C and 1000 °C. Melted carbonate LNCO, composed of Li2CO3 and Na2CO3 at a molar ra

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4

Zhu, Chenkai, Lei Nie, Xiaofei Yan, Jiawei Li, and Dongming Qi. "Ramie fiber reinforced composites with flame retardant structure design: flammability, smoke suppression, and mechanical properties." Journal of Polymer Engineering 42, no. 1 (2021): 9–17. http://dx.doi.org/10.1515/polyeng-2021-0221.

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Abstract In this work, the structure of composite was designed as Core Stack and Surface Stack, which was treated with the expandable graphite (EG) and metal oxides such as iron oxide (IO), hydroxyapatite (HA), and aluminum tri-hydroxide (ATH). The mechanical performance of composites was characterized via flexural performance and interlaminar shear strength analysis. The flame retardance and smoke suppression of composite was explored in detail by LOI, UL-94, and cone calorimeter test. The findings presented that flexural properties of composites were observed to decrease due to delamination

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5

Singh, Tej, Chandramani Goswami, Amar Patnaik, and László Lendvai. "Optimal Design of Ceramic Based Hip Implant Composites Using Hybrid AHP-MOORA Approach." Materials 15, no. 11 (2022): 3800. http://dx.doi.org/10.3390/ma15113800.

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Designing excellent hip implant composite material with optimal physical, mechanical and wear properties is challenging. Improper hip implant composite design may result in a premature component and product failure. Therefore, a hybrid decision-making tool was proposed to select the optimal hip implant composite according to several criteria that are probably conflicting. In varying weight proportions, a series of hip implant composite materials containing different ceramics (magnesium oxide, zirconium oxide, chromium oxide, silicon nitride and aluminium oxide) were fabricated and evaluated fo

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6

Aphesteguy, Juan C., and Silvia E. Jacobo. "Preparation and Characterization of Nanocomposites for Technological Applications." Solid State Phenomena 202 (May 2013): 97–111. http://dx.doi.org/10.4028/www.scientific.net/ssp.202.97.

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Materials with both electrical and magnetic properties are required for various applications ranging from electric and magnetic shields, molecular electronics, and sensors to microwave absorbers. Conducting polymers with the addition of magnetic oxides composites are suitable for such uses. Such is the case of the polyaniline (PANI), an organic polymer, mixed with magnetite. We have prepared through a new chemical method a PANI/ Fe3O4 composite with different amount of magnetic oxide from 0.3% m/m on the composite up to 42% m/m. The final product is a powder with good solubility in some organi

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7

HO, M. Y., P. S. KHIEW, D. ISA, T. K. TAN, W. S. CHIU, and C. H. CHIA. "A REVIEW OF METAL OXIDE COMPOSITE ELECTRODE MATERIALS FOR ELECTROCHEMICAL CAPACITORS." Nano 09, no. 06 (2014): 1430002. http://dx.doi.org/10.1142/s1793292014300023.

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With the emerging technology in the 21st century, which requires higher electrochemical performances, metal oxide composite electrodes in particular offer complementary properties of individual materials via the incorporation of both physical and chemical charge storage mechanism together in a single electrode. Numerous works reviewed herein have identified a wide variety of attractive metal oxide-based composite electrode material for symmetric and asymmetric electrochemical capacitors. The focus of the review is the detailed literature data and discussion regarding the electrochemical perfor

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8

Chausov, Denis N., Veronika V. Smirnova, Dmitriy E. Burmistrov, et al. "Synthesis of a Novel, Biocompatible and Bacteriostatic Borosiloxane Composition with Silver Oxide Nanoparticles." Materials 15, no. 2 (2022): 527. http://dx.doi.org/10.3390/ma15020527.

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Microbial antibiotic resistance is an important global world health problem. Recently, an interest in nanoparticles (NPs) of silver oxides as compounds with antibacterial potential has significantly increased. From a practical point of view, composites of silver oxide NPs and biocompatible material are of interest. A borosiloxane (BS) can be used as one such material. A composite material combining BS and silver oxide NPs has been synthesized. Composites containing BS have adjustable viscoelastic properties. The silver oxide NPs synthesized by laser ablation have a size of ~65 nm (half-width 6

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9

Kaya, Cengiz. "Current Status of Oxide Fibre-Reinforced Oxide Ceramic Matrix Composites for Gas Turbine Applications." Key Engineering Materials 434-435 (March 2010): 1–4. http://dx.doi.org/10.4028/www.scientific.net/kem.434-435.1.

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Recent developments in the processing, understanding and mechanical/thermomechanical properties of oxide fibre reinforced oxide ceramic matrix composites for high temperature applications are reported. Two dimensional composite plates and uni-directional tubular composite (so called mini-composite) specimens are successfully manufactured and their microstructure, matrix/ fiber interface as well as mechanical properties are examined. It is shown that the microstructural variations, such as porosity size and interface between fibre and matrix determine the fracture behaviour and high temperature

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10

Romanova, Iryna, and Sviatosla Kirillov. "PHYSICO-CHEMICAL PROPERTIES OF COMPOSITES ON THE BASE OF CERIA OBTAINED BY A CITRIC ACID METHOD." Ukrainian Chemistry Journal 85, no. 4 (2019): 98–109. http://dx.doi.org/10.33609/0041-6045.85.4.2019.98-109.

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Composites with the formula nMOx–СеО2, where n is the mole part of copper or manganese oxide have been synthesized via citric acid aided route. Physico-chemical properties of materials obtained are investigated by XRD, low temperature desorption of nitrogen and by temperature-programmed reduction (TPR). It is defined that the composites with the n < 0.25 (for Cu) and < 0.75 (Mn) are the solid solutions obtained by the replacement of cerium ions in the structure of fluorite (СеО2) by copper or manganese ions. The existence of the separate phases of oxides such as CuO and Mn3O4 has been id

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11

Joshi, P. S., and D. S. Sutrave. "Study of Ruthenium Oxide, Manganese Oxide and Composite (Ru:Mn)O2 thin film Electrodes Assembled by Layer by Layer Spin Coating Method." Material Science Research India 13, no. 1 (2016): 43–49. http://dx.doi.org/10.13005/msri/130107.

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Ruthenium oxide, Manganese oxide and (Ru:Mn)O2 composite thin films have been prepared by 0.02M Ruthenium chloride and Manganese acetate solutions respectively on stainless steel substrates by sol-gel spin coating method. Layer by layer deposition of RuO2 and MnO2 was done for composite films. RuO2: MnO2 composite thin films have been demonstrated to be an excellent material for Supercapacitor application when evaluated with RuO2 and MnO2 thin film electrodes with respect to XRD, SEM, CV, CP and EIS studies. As a result, high specific capacitance of 515 F/g at 10 mV/s with excellent stability

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12

Egorin, Andrei, Eduard Tokar, Anna Matskevich, et al. "Composite Magnetic Sorbents Based on Iron Oxides in Different Polymer Matrices: Comparison and Application for Removal of Strontium." Biomimetics 5, no. 2 (2020): 22. http://dx.doi.org/10.3390/biomimetics5020022.

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Introduction of magnetic nanoparticles into composite sorbents based on polymer matrices has received great attention due to the possibility of using cheap iron oxides and removing spent sorbents by means of magnetic separation. In the present paper, we discuss the problem of creating magnetic sorbents using two types of matrices as host materials: synthetic cation exchange resin and natural aminopolysaccharide chitosan. The possibilities of applying matrices for the in situ formation of oxide phases of a specified composition with the required content of an inorganic component in a composite

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13

Chkhartishvili, Levan, Natia Barbakadze, Otar Tsagareishvili, et al. "Coating of Carbon Black (CB) and Graphene Oxides (GOs) with Magnetite (Fe3O4)." International Journal of Advanced Nano Computing and Analytics 3, no. 1 (2024): 06–19. http://dx.doi.org/10.61797/ijanca.v3i1.330.

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Composites containing iron oxides are obtained by the co-precipitation of iron(II) and iron(III) compounds in the presence of different substrates in an alkaline environment. Newly synthesized graphene oxide (GO), reduced graphene oxide (rCO) and carbon black (CB) are used as substrates. Methods of obtaining GO–amorphous iron compound, rGO–Fe3O4, and CB–Fe3O4 composites are developed. It is determined that rGO–Fe3O4 and CB–Fe3O4 magnetic composites can be obtained at 70–75°C, while in the presence of GO, a non-magnetic composite containing an amorphous iron compound is formed under the same co

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14

Majumdar, Dipanwita. "An Overview on Ruthenium Oxide Composites – Challenging Material for Energy Storage Applications." Material Science Research India 15, no. 1 (2018): 30–40. http://dx.doi.org/10.13005/msri/150104.

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Ruthenium oxides owing to their high specific capacitance have been widely identified as promising materials for electrochemical charge storage devices. However, high priced ruthenium precursors restrict their commercial usage. Accordingly, numerous explorations investigated the influences on capacitive behavior of ruthenium oxide on blending with varied materials like other metal oxides, activated carbons, conducting polymers, CNTs and functionalized graphene systems as composites. The aim had been to optimize the material cost without compromising with but improving the composite electrochem

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15

Schoell, Ryan, Aspen Reyes, Guddi Suman, et al. "Hot Isostatic Pressing Control of Tungsten-Based Composites." Inorganics 11, no. 2 (2023): 82. http://dx.doi.org/10.3390/inorganics11020082.

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Metal-oxide composites are commonly used in high temperature environments for their thermal stability and high melting points. Commonly employed with refractory oxides or carbides such as ZrC and HfC, these materials may be improved with the use of a low density, high melting point ceramic such as CeO2. In this work, the consolidation of W-CeO2 metal matrix composites in the high CeO2 concentration regime is explored. The CeO2 concentrations of 50, 33, and 25 wt.%, the CeO2 particle size from nanometer to micrometer, and various hot isostatic pressing temperatures are investigated. Decreasing

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16

Wu, Yali, Wenjie Hao, Tian Tian, Jinhe Yang, and Yueping Cao. "Preparation of Graphene Doped Titanium Dioxide Compo -site and Study on Treatment of Laboratory Wastewater." International Journal of Materials Science and Technology Studies 1, no. 2 (2024): 1–11. http://dx.doi.org/10.62051/ijmsts.v1n2.01.

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In this paper, five kinds of composite materials were prepared by using graphene oxide (or graphene) doped with TiO2. The photocatalytic properties of five kinds of composite materials, pure graphene oxide and pure TiO2 for methyl orange, phenol solution and rhodamine B simulated laboratory wastewater were studied respectively. The experimental results show that the photocatalytic performance of graphene oxide-doped titanium dioxide composites is better than that of graphene oxide-doped titanium dioxide composites. When graphene oxide is doped with titanium dioxide as catalyst, the higher the

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17

Li, Shun, Zhaofeng Chen, Zhiyuan Rao, Fei Wang, Cao Wu, and Xinli Ye. "The preparation and research of reduced graphene oxide/glass composite fiber." Journal of Engineered Fibers and Fabrics 14 (January 2019): 155892501988310. http://dx.doi.org/10.1177/1558925019883105.

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In this article, reduced graphene oxide/glass composite fiber was prepared from mixing graphene oxide and glass powder by ultrasonic dispersion, planetary grinding, high-temperature sintering, and melting wire drawing. The effects of reduced graphene oxide content on the mechanical and electrical properties of the fiber were investigated. Thermal gravimetric analyzer, differential scanning calorimeter, x-ray diffraction, and energy-dispersive x-ray spectroscopy analysis revealed that the graphene oxide was reduced to reduced graphene oxide in the sintering process and the performances of the c

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18

Butylina, Svetlana, Ossi Martikka, and Timo Kärki. "Effect of inorganic pigments on the properties of coextruded polypropylene-based composites." Journal of Thermoplastic Composite Materials 31, no. 1 (2016): 23–33. http://dx.doi.org/10.1177/0892705716646416.

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In this article, the effect of the incorporation of three inorganic pigments on the properties of coextruded polypropylene-based composites was studied. Three different pigments were incorporated in the shell layer of the composites: iron oxide, titanium dioxide (TiO2) and zinc oxide (ZnO). The tensile properties and Charpy impact strength of the composites were tested. A water immersion test was conducted. The morphology of the fractured surfaces of composites was characterised by scanning electron microscopy. The durability of the composites was assessed by testing colour characteristics and

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19

Ros Madi, Nur Alia Farhana, Nurfatehah Wahyuny Che Jusoh, Yuki Nagao, Lian See Tan, and Mariam Firdhaus Mad Nordin. "Utilizing metal oxide/fabric composites for photocatalytic degradation of wastewater." E3S Web of Conferences 516 (2024): 03004. http://dx.doi.org/10.1051/e3sconf/202451603004.

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The growing concern over water pollution has increased the search for innovative and sustainable approaches to wastewater treatment. This manuscript offers a concise exploration of the utilization of composite materials comprising metal oxides and fabrics for the purpose of photocatalytic degradation. Metal oxides, including titanium dioxide (TiO2), zinc oxide (ZnO), and etc possess inherent photocatalytic properties that, when combined with fabric matrices, present a synergistic approach for pollutant removal. The incorporation of metal oxides and fabrics enhances the photocatalytic performan

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20

Zemskova, Larisa, Andrei Egorin, Eduard Tokar, Vladimir Ivanov, and Svetlana Bratskaya. "New Chitosan/Iron Oxide Composites: Fabrication and Application for Removal of Sr2+ Radionuclide from Aqueous Solutions." Biomimetics 3, no. 4 (2018): 39. http://dx.doi.org/10.3390/biomimetics3040039.

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Here, we discuss the fabrication and problems of application of chitosan-based composite materials for the removal of hazardous metal ions from tap water and wastewater. The chitosan-based composites containing iron oxides for the uptake of Sr2+ ions were fabricated via a co-precipitation method with variation of the iron/chitosan ratio and pH of the medium. The morphology and composition of the fabricated sorbents were characterized using scanning electron microscopy–energy dispersive X-ray spectroscopy (SEM–EDX) and X-ray diffraction (XRD) analysis. We have shown that the suggested fabricati

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21

Ahadzade, Sh M., I. A. Vakulenko, and Kh Asgarov. "Factors Influence on Electrophysical Parameters of the Composite Varistors." Science and Transport Progress, no. 1(101) (March 14, 2023): 29–36. http://dx.doi.org/10.15802/stp2023/283013.

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Purpose. Evaluation influence structural state polymer phase on the response voltage and coefficient nonlinearity of a multilayer varistor based on zinc oxide. Methodology. Zinc oxide consisted of 97% zinc oxide and 3% total oxides of Bi2O3, Co3O4, MnO2, B2O3, SbO3, ZrO2, Al2O3. At a temperature of 1573°K, the synthesis of semiconductor ceramics based on Zinc oxide was carried out. For composite of thermoplastic polymers and Zinc oxide, non-polar and polar polymers, high pressure polyethylene and polyvinylidene fluoride were used. The composites were obtained by hot pressing at the melting tem

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22

Guo, Leyang, and Junwu Guo. "Study on the Catalytic Activity Modification of Pr and Nd Doped Ce_0.7Zr_0.3O₂ Catalysts for Simultaneous Removal of PM and NO_X." Science of Advanced Materials 16, no. 7 (2024): 821–28. http://dx.doi.org/10.1166/sam.2024.4679.

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Cerium-zirconium composite oxides (Ce0.7Zr0.3O2) have a remarkable effect on catalytic removal of carbon particles (PM) and nitrogen oxides (NOX) emitted from diesel engine, in order to further improve the thermal stability, oxygen storage capacity and low temperature catalytic REDOX performance of cerium zirconium composite oxides (Ce0.7Zr0.3O2), a small amount of Pr and Nd rare earth elements are doped to improve the catalytic activity of cerium zirconium composite oxides. In this paper, the composite oxide of Pr6O11–Nd2O3–CeO2–ZrO2 is prepared by unsteady co-precipitation method, and the ph

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23

Malyshev, Sergey A., Oleg A. Shlyakhtin, Alexey S. Loktev, et al. "Ni/(R2O3,CaO) Nanocomposites Produced by the Exsolution of R1.5Ca0.5NiO4 Nickelates (R = Nd, Sm, Eu): Rare Earth Effect on the Catalytic Performance in the Dry Reforming and Partial Oxidation of Methane." Materials 15, no. 20 (2022): 7265. http://dx.doi.org/10.3390/ma15207265.

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In order to clarify the role of R2O3 in the metal-oxide catalysts derived from complex oxide precursors, a series of R1.5Ca0.5NiO4 (R = Nd, Sm, Eu) complex oxides was obtained. A significant systematic increase in the orthorhombic distortion of the R1.5Ca0.5NiO4 structure (K2NiF4 type, Cmce) from Nd to Eu correlates with a corresponding decrease in their ionic radii. A reduction of R1.5Ca0.5NiO4 in the Ar/H2 gas mixture at 800 °C causes a formation of dense agglomerates of CaO and R2O3 coated with spherical 25–30 nm particles of Ni metal. The size of metal particles and oxide agglomerates is s

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24

Hessien, Manal. "Methylene Blue Dye Adsorption on Iron Oxide-Hydrochar Composite Synthesized via a Facile Microwave-Assisted Hydrothermal Carbonization of Pomegranate Peels’ Waste." Molecules 28, no. 11 (2023): 4526. http://dx.doi.org/10.3390/molecules28114526.

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The toxicity of dyes has a long-lasting negative impact on aquatic life. Adsorption is an inexpensive, simple, and straightforward technique for eliminating pollutants. One of the challenges facing adsorption is that it is hard to collect the adsorbents after the adsorption. Adding a magnetic property to the adsorbents makes it easier to collect the adsorbents. The current work reports the synthesis of an iron oxide-hydrochar composite (FHC) and an iron oxide-activated hydrochar composite (FAC) through the microwave-assisted hydrothermal carbonization (MHC) technique, which is known as a times

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Aslam, Junaid, and Yong Wang. "Metal Oxide Wrapped by Reduced Graphene Oxide Nanocomposites as Anode Materials for Lithium-Ion Batteries." Nanomaterials 13, no. 2 (2023): 296. http://dx.doi.org/10.3390/nano13020296.

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The reduced graphene oxide/iron oxide (rGO/Fe2O3) and reduced graphene oxide/cobalt oxide (rGO/Co3O4) composite anodes have been successfully prepared through a simple and scalable ball-milling synthesis. The substantial interaction of Fe2O3 and Co3O4 with the rGO matrix strengthens the electronic conductivity and limits the volume variation during cycling in the rGO/Fe2O3 and rGO/Co3O4 composites because reduced graphene oxide (rGO) helps the metal oxides (MOs) to attain a more efficient diffusion of Li-ions and leads to high specific capacities. As anode materials for LIBs, the rGO/Fe2O3 and

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26

Kim, Daeyoung, Heon Kang, Donghyun Bae, Seungjin Nam, Manuel Quevedo-Lopez, and Hyunjoo Choi. "Synthesis of reduced graphene oxide/aluminum nanocomposites via chemical-mechanical processes." Journal of Composite Materials 52, no. 22 (2018): 3015–25. http://dx.doi.org/10.1177/0021998318760152.

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The present study employed a combination of solution-based synthesis and mechanical milling to develop reduced graphene oxide/aluminum composites, in order to achieve uniform dispersion of reduced graphene oxide and strong interfaces between reduced graphene oxide and aluminum. First, spherical aluminum powder was flattened via mechanical milling to afford a large specific surface area and many reaction sites for the graphene oxide. A hydrophilic surface was then created by coating the aluminum powder with polyvinyl alcohol. The polyvinyl alcohol-coated aluminum slurry was mixed with a graphen

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27

Filho, Aureo Murador, Dayse Iara dos Santos, Marcos Yukio Kussuda, et al. "ZnO-TiO₂ Composite Formed by Mixed Oxides via Polyol." Materials Science Forum 727-728 (August 2012): 888–93. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.888.

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Among the researches on preparation and test of nanostructured materials, titanium dioxide and zinc oxide have been the most frequent studied oxides. In order to extend their properties, composites have been prepared using three different methods: Polyol Method, Sol-gel Process and a combination of the two processes (hybrid process). Recent research showed best properties in composite materials than in pure oxides. In this work is presented the preparation and the structural characterization of ZnO-TiO2 composite nanostructures to be tested for their performance in electrocatalysis and in furt

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Huang, Wenjing, Tianyuan Yao, Qingli Hao, Wenjuan Wang, Xifeng Xia, and Xin Wang. "Synthesis and electrochemical properties of graphene oxide/manganese oxide/polyaniline and its reduced composites." RSC Adv. 4, no. 100 (2014): 56615–24. http://dx.doi.org/10.1039/c4ra06360k.

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Wan, Li Juan. "Synthesis of Carbon Nitride Intercalation Compound Composite and Study of Visible Light-Induced Photocatalytic Performance." Materials Science Forum 1032 (May 2021): 3–8. http://dx.doi.org/10.4028/www.scientific.net/msf.1032.3.

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Novel visible light-induced carbon nitride intercalation compound (CNIC) with iron oxide composite photocatalyst with different content of iron oxide were synthesized through simple mixing and heat treatment. The composite photocatalyst was characterized by Fourier transform infrared (FT-IR) spectroscopy and BET surface area measurements. The photocatalytic oxidation ability of the novel composite photocatalyst was evaluated using methyl range (MO) as a target pollutant. The experimental results showed the composites with a content of iron oxide exhibited the higher photocatalytic activity tha

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Marinca, Traian Florin, Bogdan Viorel Neamțu, Florin Popa, Amalia Mesaroș, and Ionel Chicinaș. "Spark Plasma Sintered Soft Magnetic Composite Based on Fe-Si-Al Surface Oxidized Powders." Materials 15, no. 22 (2022): 7875. http://dx.doi.org/10.3390/ma15227875.

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Soft magnetic composites (SMCs) need a stable matrix to apply heat treatments for enhancing their magnetic characteristics. A stable matrix can be offered by alumina, but the densification of the ferromagnetic particles covered by this oxide (by sintering) can be very difficult. This paper proposes a feasible synthesis route for obtaining alumina matrix SMCs. An Fe-Si-Al alloy with nominal composition Fe85Si9Al6 was obtained by mechanical alloying of elemental Fe, Si, and Al powders, and further, the as-milled powders were superficially oxidized by immersion in HCl solution. The oxide layer wa

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Rogacheva, A. O., O. S. Khalipova, A. S. Brichkov, and V. V. Kozik. "Production of TiO2/Cr2O3 Composite Material in the Spherical Form." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 4 (85) (August 2019): 124–33. http://dx.doi.org/10.18698/1812-3368-2019-4-124-133.

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Spherical TiO2/Cr2O3 oxides composites were obtained by template method accompanied with sol-gel method. Ion exchange resins of spherical form (TOKEM-100 and TOKEM-250) were used as an organic polymer matrix. Thermal analysis, X-ray phase analysis and micro-X-ray spectral analysis were used to identify the formation process and compositions of oxides composites. The formation of spherical oxide composite ends at 400 °C and the final products are a mixture of two oxides: Cr2O3 and TiO2 regardless of the structure of the used template. According SEM data prepared TiO2/Cr2O3 composites have spher

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32

Li, Xiu Ping, Rong Xiang Zhao, and Chu Jia Li. "Preparation and Photocatalyst of Ce/Zn Composite Oxide." Advanced Materials Research 873 (December 2013): 441–44. http://dx.doi.org/10.4028/www.scientific.net/amr.873.441.

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With abscibe acid as combustion agent, Zn (NO3)27H2O and Ce (NO3)36H2O as raw material, the CeO2-ZnO composite oxide was synthesized by an novel combustion method. The experiment investaged the effect of molar ratio of combustion agents, Zn and Ce on composite oxides. The samples were characterized by XRD, SEM, IR, UV. The molar ratio of Ce, Zn and combustion agents is different, the composite oxides possess various morphology and properities. The photocatalytic experiment of composite oxide showed that under the optimal photocatalytic condition Methylene blue solution is completely degradated

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33

Gordon-Nuñez, Franklin, Katherine Vaca-Escobar, Milton Villacís-García, et al. "Applicability of Goethite/Reduced Graphene Oxide Nanocomposites to Remove Lead from Wastewater." Nanomaterials 9, no. 11 (2019): 1580. http://dx.doi.org/10.3390/nano9111580.

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Lead ion in drinking water is one of the most dangerous metals. It affects several systems, such as the nervous, gastrointestinal, reproductive, renal, and cardiovascular systems. Adsorption process is used as a technology that can solve this problem through suitable composites. The adsorption of lead (Pb(II)) on graphene oxide (GO) and on two goethite (α-FeOOH)/reduced graphene oxide (rGO) composites (composite 1: 0.10 g GO: 22.22 g α-FeOOH and composite 2: 0.10 g GO: 5.56 g α-FeOOH), in aqueous medium, was studied. The GO was synthesized from a commercial pencil lead. Composites 1 and 2 were

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Lota, Katarzyna, Agnieszka Sierczynska, and Grzegorz Lota. "Supercapacitors Based on Nickel Oxide/Carbon Materials Composites." International Journal of Electrochemistry 2011 (2011): 1–6. http://dx.doi.org/10.4061/2011/321473.

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In the thesis, the properties of nickel oxide/active carbon composites as the electrode materials for supercapacitors are discussed. Composites with a different proportion of nickel oxide/carbon materials were prepared. A nickel oxide/carbon composite was prepared by chemically precipitating nickel hydroxide on an active carbon and heating the hydroxide at 300 ∘Cin the air. Phase compositions of the products were characterized using X-ray diffractometry (XRD). The morphology of the composites was observed by SEM. The electrochemical performances of composite electrodes used in electrochemical

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Soltani, Mehrdad, and Seid Abbas Hoseininejad. "Composite reinforcement by oxide TiO2." Science and Engineering of Composite Materials 20, no. 1 (2013): 7–14. http://dx.doi.org/10.1515/secm-2012-0042.

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AbstractThis composite has been developed by solidification processing by the addition of 0.5–3. 5 wt% powders of oxide TiO2 to molten Al-Cu alloy. The dry sliding wear behavior of pins of cast composite, fabricated by the solidification of the melt-particle slurry in mold, has been determined by pin-on-disc wear tests carried out conventionally and while removing wear debris by camel brush. The accumulated volume loss in composites increases linearly with increasing the sliding distance, and the wear rate increases more or less linearly with increasing load. The increasing particle content de

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Panić, V., A. Dekanski, S. Lj Gojković, S. K. Milonjić, V. B. Mišković-Stanković, and B. Nikolić. "Morphology and Capacitive Properties of [RuO_xH_y/Low Surface Area Carbon Black] Composite Materials Prepared by Sol Gel Procedure." Materials Science Forum 494 (September 2005): 235–40. http://dx.doi.org/10.4028/www.scientific.net/msf.494.235.

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The morphology and the capacitive properties of carbon supported hydrous ruthenium oxide (RuOxHy/C), prepared by impregnation of low-surface area carbon black VulcanÒ XC-72 R with solid phase of RuOxHy sol, were investigated by scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The oxide sols of different ageing times, prepared by forced hydrolysis of RuCl3, were used for composite preparation. The prepared composites show considerably higher capacitance values in acid electrolyte if compared to carbon black support. Microscopic investigations show tha

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Dr, Ritu Tomar* Dr Chandrashekhar Bendigeri Dr Sandeep Kumar Tomar. "FABRICATION AND FOURIER TRANSFORM INFRARED SPECTROSCOPY STUDIES ON PVP BASED POLYMER NANOCOMPOSITES." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 9 (2016): 481–93. https://doi.org/10.5281/zenodo.154246.

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A nano composite is a multi phase solid material where one of the phases has dimensions of less than 100 nano meters. Nano composites have different properties for specific applications. In this work PVP based polymer nano composite has been prepared by using nano materials such as Aluminium Oxide, Aluminium Nitride, Nickel Oxide, Barium Titanate and Zinc Oxide. FTIR Spectroscopy has been used in the present work to assessing purity of polymer nano composite fabricated by solution cast technique FTIR Spectra of various composition of polymer nanocomposite has been determined and discussed in d

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Tran, Vinh Van, Truong Thi Vu Nu, Hong-Ryun Jung, and Mincheol Chang. "Advanced Photocatalysts Based on Conducting Polymer/Metal Oxide Composites for Environmental Applications." Polymers 13, no. 18 (2021): 3031. http://dx.doi.org/10.3390/polym13183031.

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Photocatalysts provide a sustainable method of treating organic pollutants in wastewater and converting greenhouse gases. Many studies have been published on this topic in recent years, which signifies the great interest and attention that this topic inspires in the community, as well as in scientists. Composite photocatalysts based on conducting polymers and metal oxides have emerged as novel and promising photoactive materials. It has been demonstrated that conducting polymers can substantially improve the photocatalytic efficiency of metal oxides owing to their superior photocatalytic activ

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Okafor, Patricia, and Jude Iroh. "Electrochemical Properties of Porous Graphene/Polyimide-Nickel Oxide Hybrid Composite Electrode Material." Energies 14, no. 3 (2021): 582. http://dx.doi.org/10.3390/en14030582.

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Polyimide-graphene nanosheet composite electrodes are rigid and dense and, therefore, exhibit moderate electrochemical properties. The electrochemical properties of polyimide-graphene nanosheet electrodes were remarkably improved by creating voids in the composite followed by the insertion of nickel oxide into the composites. Nickel oxide particles were electrodeposited onto the porous graphene/poly(amic acid) composite, containing poly (acrylic resin). The hybrid composite was then subjected to thermal treatment at ≥ 300 °C to simultaneously complete imidization and degrade the poly (acrylic

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Nesov, S. N., Yu A. Stenkin, S. A. Matushenko, I. A. Lobov, K. E. Ivlev, and A. M. Badamshin. "EFFECT OF SYNTHESIS MODES ON ELECTROCHEMICAL CHARACTERISTICS OF COMPOSITES BASED ON MULTI-WALLED CARBON NANOTUBES AND MANGANESE OXIDE DOPED WITH SILVER OXIDE." DYNAMICS OF SYSTEMS, MECHANISMS AND MACHINES 11, no. 4 (2023): 23–28. http://dx.doi.org/10.25206/2310-9793-2023-11-4-23-28.

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In this work, promising electrode materials for asymmetric supercapacitors based on multiwalled carbon nanotubes and manganese oxide doped with silver oxide were obtained and studied. To form the composites, the method of exposure of carbon material in an aqueous solution of potassium permanganate with the addition of silver nitrate in various quantities was used. It has been established that an increase in the amount of silver nitrate during the formation of the composite leads to an increase in the mass loading of the composite with both silver oxide and manganese oxide, which provides highe

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Mohammed, Asif Kattimani. "Enhancement of Microstructural and Thermal Properties of Epoxy Polymer Composite by Introducing Graphene Oxide." International Journal of Advances in Engineering and Technology 17, no. 5 (2024): 542–50. https://doi.org/10.5281/zenodo.14173003.

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<em>The goal of this study was to improve the microstructural and thermal performance of epoxy polymer composites by investigating the effects of different concentrations of graphene oxide (GO). By methodically changing the amount of GO in each sample specimens were created using the Composite Fabrication technique. Thermogravimetric analysis (TGA) transmission electron microscopy (TEM) X-ray diffraction (XRD) and dynamic mechanical analysis (DMA) were among the analyses performed to assess the composites. The findings showed that the addition of graphene oxide greatly enhanced the composites

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Pal, Rishi, Sneh Lata Goyal, and Anil Kumar Gupta. "Polyaniline/oxide-based core-shell like structured composites for reduction in electromagnetic pollution." International Journal of Innovative Research in Physics 2, no. 4 (2021): 15–21. http://dx.doi.org/10.15864/ijiip.2403.

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Polyaniline (PANI) based composites with manganese dioxide (MnO2, 30 wt.%) and vanadium pentaoxide (V2O5, 30 wt.%) have been synthesized using the in-situ polymerization synthesis route, whereas both the oxides used as filler materials in the polyaniline matrix. The amalgamated composites have been analyzed for morphological investigation and shielding the incident electromagnetic (EM) waves in the frequency range 8.2-12.4 GHz (X-band). PANI/MnO2 and PANI/V2O5 composites are synthesized in core-shell like morphology, whereas PANI act as core while oxide act as the shell. The shielding of EM wa

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Rahman, Mohammad Mizanur. "Polyurethane/Zinc Oxide (PU/ZnO) Composite—Synthesis, Protective Property and Application." Polymers 12, no. 7 (2020): 1535. http://dx.doi.org/10.3390/polym12071535.

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A polyurethane (PU) is a multifunctional polymer prepared by using more than two types of monomers. The unique properties of PU come from monomers, thus broadening the applicability of PU in many different sectors. The properties can be further improved by using many nanoparticles. Different metal oxides as nanoparticles are also widely used in PU materials. ZnO is a widely used inorganic metal oxide nanoparticle for improving polymer properties. In this review article, the techniques to prepare a PU/ZnO composite are reviewed; the key protective properties, such as adhesive strength and self-

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Wu, Z., Q. Gao, Q. Wang, Y. Wang, Z. Zhang, and Y. Zhang. "Effect of hollow beads content in aluminum oxide hollow beads reinforced epoxy composites on mechanical and energy absorption properties of the composites." Materialwissenschaft und Werkstofftechnik 55, no. 12 (2024): 1640–51. https://doi.org/10.1002/mawe.202400163.

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AbstractAluminum oxide hollow microbeads/epoxy resin composite is a kind of epoxy resin‐based multi‐porous energy‐absorbing material. This study improved the brittleness and toughness of epoxy resin. Adding hollow aluminum oxide microbeads with different mass fractions increased the energy absorption capacity. Quasi‐static compression tests were carried out at room temperature to test the compression properties of epoxy resin/hollow microbead composites. The composites′ energy absorption properties and energy absorption efficiency were analyzed and calculated using the obtained compression cur

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Jamaludin, Shamsul Baharin, Josef Hadipramana, Mohd Fitri Mohd Wahid, Kamarudin Hussin, and Azmi Rahmat. "Microstructure and Interface Analysis of Glass Particulate Reinforced Aluminum Matrix Composite." Advanced Materials Research 795 (September 2013): 578–81. http://dx.doi.org/10.4028/www.scientific.net/amr.795.578.

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A characterization of microstructure and interface was made on the composites Al-4 % Cu reinforced with 15 wt. % glass particulate. The composite was fabricated by powder metallurgy followed by solution treatment and artificial ageing. The microstructures of the composite showed that the glass particulates were in-homogenously distributed in the matrix and segregated near copper. The aluminum oxide layer was found between aluminum, copper and glass particulate. Micro cracks were observed in the aluminum oxide layer and at the interface between aluminum oxide layer and aluminum. Hardness increa

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Sh., M. Ahadzade, A. Vakulenko I., and Asgarov Kh. "Factors Influence on Electrophysical Parameters of the Composite Varistors." Science and Transport Progress, no. 1(101) (March 14, 2023): 29–36. https://doi.org/10.15802/stp2023/283013.

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<strong>Purpose. </strong>Evaluation influence structural state polymer phase on the response voltage and coefficient nonlinearity of a multilayer varistor based on zinc oxide.<strong> Methodology. </strong>Zinc oxide consisted of 97% zinc oxide and 3% total oxides of Bi<sub>2</sub>O<sub>3</sub>, Co<sub>3</sub>O<sub>4</sub>, MnO<sub>2</sub>, B<sub>2</sub>O<sub>3</sub>, SbO<sub>3</sub>, ZrO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>. At a temperature of 1573°K, the synthesis of semiconductor ceramics based on Zinc oxide was carried out. For composite of thermoplastic polymers a

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Pędzich, Zbigniew. "Fracture of Oxide Matrix Composites with Different Phase Arrangement." Key Engineering Materials 409 (March 2009): 244–51. http://dx.doi.org/10.4028/www.scientific.net/kem.409.244.

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The paper presents the analysis of the fracture path in composites with the alumina or zirconia matrix containing inclusions of another oxide or tungsten carbide. The description concerns the fracture of composite systems with 10 vol.% of inclusions (particulate composites), other three-systems with 33 vol.% of inclusions of each phase and the two phase composite with the equal phase content (50 : 50 vol.%). The different phase proportion and diversified content of inclusions cause significant differences in the microstructure of composites. The main difference between particulate composites a

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Corso, Marla, Ana Carolina de Dias Albuquerque, Lídia Pereira Amaro, et al. "Graphene oxide synthesis for composite material preparation." Revista Ibero-Americana de Ciências Ambientais 10, no. 1 (2019): 157–66. http://dx.doi.org/10.6008/cbpc2179-6858.2019.001.0013.

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Graphene, a material formed by carbon atoms with sp2 hybridization in a hexagonal arrangement, has differentiated characteristics in comparison to commercial materials such as high flexibility, high electrical and thermal conductivity, and strong resistance due to the organized structure of the material and can be applied in several branches of research. The best-known method for the production of graphene is the exfoliation of graphite using the methodology proposed by Hummers, in which the commercial graphite is oxidized obtaining as final product the graphene oxide that can be converted int

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Yu, Yiheng, Duo Zhang, Hui He, Chaogui Luo, and Ming Zhou. "Preparation and Properties of Magnetically Responsive Graphene/Boron Nitride/Iron Oxide Filler Composite Epoxy Resin Materials." Nanomaterials 15, no. 12 (2025): 936. https://doi.org/10.3390/nano15120936.

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In this paper, magnetically responsive graphene/boron nitride/iron oxide fillers were prepared by growing iron oxide on the surface of graphene/boron nitride fillers via liquid-phase reaction. By adding the composite filler into the epoxy resin and utilising magnetic field-assisted curing, the composites were prepared to effectively improve the thermal conductivity of the composites while maintaining the insulating properties. The thermal conductivity of the composite filler is 2.1 Wm−1K−1, and the volume resistance is 4.63 × 1012 Ω·cm when the mass ratio of the composite filler is 25%, and th

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Shivakumar, S. P., A. S. Sharan, and K. Sadashivappa. "Experimental Investigations on Vibration Properties of Aluminium Matrix Composites Reinforced with Iron Oxide Particles." Applied Mechanics and Materials 895 (November 2019): 122–26. http://dx.doi.org/10.4028/www.scientific.net/amm.895.122.

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Aluminium matrix composites offer improved damping properties than other metals and its alloy. Generally pure metals and its alloys may have fairly good mechanical properties but falls short in damping properties. Aluminium matrix composites are becoming important in aerospace automobile and marine applications due to its god damping properties. The present investigation is concerned with the damping capacity of iron oxide (Fe2O3) reinforced aluminium matrix composite. The composites were fabricated with 2%, 4% and 6%, by weight of iron oxide with varied particle of size 40 μm and 500 nm in eq

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