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Vanadium dioxide (VO2) is a binary oxide with a strongly correlated electronic system. Due to the strong interaction of its internal electrons, orbits, crystal lattices and spins, local electronic and crystal structure changes caused by small external stimuli can be sufficient. Induce VO2 to undergo a reversible metal-insulator phase transition. Along with the phase change, the crystal structure, ...
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Objective: To prepare a polishing slurry of α-Al2O3 nanoparticles with good dispersion stability; to improve the chemical mechanical polishing performance of sapphire; Disperse α-Al2O3 in different dispersing media such as silica sol, cerium oxide sol, water, etc.; prepare a polishing slurry of α-Al2O3 nanoparticles under conditions of different pH, different silica sol concentration and silica so...
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In order to explore the ultraviolet protection performance of nanofibers, the ultraviolet shielding nano titanium dioxide (TiO2) was added to the polyacrylonitrile (PAN) solution, and pure PAN and composite PAN/TiO2 nanofiber membranes were prepared. Scanning electron microscopy and UV transmittance analysis were used. The instrument analyzed the microscopic morphology and UV protection performanc...
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Nano alumina has special mechanical and chemical properties, such as high chemical stability, high hardness, high temperature wear resistance and corrosion resistance, etc., and can be used as the enhanced second phase of the metal matrix composite to be applied to the surface of the device, thereby improving its resistance Wear and corrosion resistance. The results of X-ray diffraction analysis a...
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Nano TiO2 properties and photocatalytic properties Nano titanium dioxide has the characteristics of small size effect, high specific surface effect and high chemical activity of nano materials, and has high photocatalytic performance. Nano titanium dioxide is popular for its advantages such as low price, suitable forbidden band width, large specific surface area, high chemical stability, strong re...
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1.Degrade harmful organic matter in the atmosphere With the advancement of human science and technology, industrial development has become increasingly large, and it has also brought serious air pollution problems, among which serious pollutants are N0, H2s, and SO. , Volatile Organic Compounds (VOCS), etc., they can cause a series of major disasters such as photochemical smog, acid rain, ozone la...
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Nano zinc oxide and nano titanium oxide are two important and widely used physical sunscreens. Their principle of shielding ultraviolet rays is to absorb and scatter ultraviolet rays. Because they are all N-type semiconductors, the band gap of rutile nano-titanium oxide is 3.0 eV, and the band gap of nano-zinc oxide is 3.2 eV. When irradiated by ultraviolet rays, electrons in the valence band can ...
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Alumina ceramics is a structural ceramic material with a-Al2O3 as the main crystal phase. Because of its high melting point, high hardness, heat resistance, corrosion resistance, and electrical insulation characteristics, it can be used under harsher conditions . The price of alumina ceramics is low, and the production process is mature. It is currently one of the ceramic materials with the larges...
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Copper oxide and cuprous oxide belong to traditional mineral-derived pesticides, which have the functions of killing insects, sterilizing, fertilizer, wood preserving, and regulating plant growth in the field of pesticides. Although copper has a long history as a fungicide and insecticide in the field of pesticides, traditional inorganic copper oxide has a series of problems such as slow absorptio...
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As one of the important parts of lithium ion batteries, the diaphragm can avoid the positive and negative electrode contact and promote the shuttle of lithium ions between the two electrodes. It does not participate in the electrochemical reaction, but determines the performance and safety of the battery. Inorganic ultrafine powder coating or composite modified polymer is one of the effective meth...
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Copper oxide powder is a brown-black metal oxide powder with a wide range of uses. Copper oxide is a multifunctional fine inorganic material with a wide range of uses, mainly used in the fields of printing and dyeing, glass, ceramics, medicine and catalysis. It can be used as a catalyst and catalyst carrier and electrode activation material, and also as a rocket propellant. As the main component o...
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Nano zinc oxide is a new type of multifunctional fine inorganic material. Due to the small particle size, the nano-zinc oxide powder produces surface effects, small size effects, quantum effects and macro-quantum tunneling effects that the bulk material does not have, and exhibits many special properties. Such as non-toxic, non-migration, Fluorescence, piezoelectricity, antibacterial deodorization...
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