纳米WO3材料的制备及掺杂改性进展

纳米WO3是过渡金属化合物半导体，因其具有良好的电致变色、气致变色、光致变色、气敏特性而得到广泛地应用和研究。通过不同的掺杂方法、掺杂物和合理的掺杂量可实现材料改性。本文结合近年来国内外相关文献，综述了纳米WO3材料的研究现状和进展，重点概述了纳米WO3基超细粉体和薄膜的常见制备方法（沉淀法、微乳液法、溅射镀膜法和溶胶-凝胶法）并对不同制备方法的优缺点进行比较；介绍了不同掺杂对纳米WO3基材料的改性进展，尤其是掺杂对WO3材料电致变色、气敏特性以及催化性能方面的影响及应用进行了较为详细的综述，WO3适度的掺杂提供了更多的电子（或空穴），提高了电导率，对WO3的性能产生影响；最后对纳米WO3材料的发展前景进行了展望。

Development of Preparation and Doping of Nanometric WO3

Nanomaterial has been the most magnetic topic of the heated researchs in the material filed now. Nanometric tungsten oxide is metal Oxide semiconductor, and it is studied and applied extensively because of its electrochromic property, gasochromic property, photochromic property, gas sensing property, etc. Its some properties can be improved by doping different elements, in the use of different methods and rational quantity. In this paper the research actuality and progress of nano-WO3 materials are introduced, based on many domestic and overseas dissertations. The preparation methods of nanometer-sized WO3 powders and WO3 thin-film are primarily summarized, such as deposition mothod, microemulsion method, sputtering technology and sol-gel method. At the same, their advantages and disadvantages are reviewed. Different dopings have different effects to its electrochromic, gas sensing and catalytic properties and applications. The proper doping provides further electron （or hole）, enhances conductance and brings influence to the property of Tungsten oxide for reaction. At last the application prospects of the nanometric WO3 are also looked forward to.