| Room Temperature Ionic Liquids (RTILs) have been widely used in the organic chemical reactions, separations, and electrochemical for their negligible vapor pressure, low melting points, wide range of liquid temperatures, low toxicity, non-flammability, large electrochemical window, good solvents for many organic and inorganic materials, high ionic conductively and thermal stability. In contrast to their successful applications in organic and materials chemistry, the use of RTILs in micro-nanostructres synthesis has acquire some success, and has brought more attention of scientists .In this paper, nanometer indium oxide, tin dioxide and ITO powder were prepared in ionic liquids with the assistant of microwave heating, which was a new way of preparation of inorganic nanomaterials .The powders of the nanomaterial were analyzed and characterized by XRD, DSC, FT-IR, UV-Vis , Zeta potential and electrical performance, the results showed that: Indium oxide has the cubic structure, and size of particle is 31.4 nm, tin dioxide has the square structure, size of the particle is 21.0 nm, while the ITO powder for the cubic structure of iron, 21.6 nm in diameter; DSC showed that the precursor of indium and indium oxide close to the body, tin dioxide powder is a single crystal without crystal transformation, and the ITO powder fully transformant crystal temperature needs above 480℃; Zeta potential showed that the indium oxide material has two equipotential points at the pH = 2.6 and the pH = 9.8, while the tin dioxide material has three equipotential points at pH = 3.1, pH = 8.9 and the pH = 10.2; Optical performance showed that indium oxide displays part of a red shift, and the tin dioxide band gap becomes narrows, the ITO powder showed 88 percent above the average transmittance at visible light distrect; Electrical performance showed that the resistance of the three powders become lower while temperature increased.
|
PDF Full Text Request