纳米氧化锌的制备方法及其光催化性能

纳米氧化锌（ZnO）作为一种高功能材料,被广泛应用于气体传感、催化、能源、光电材料等领域,在紫外光照射下,可产生光致电子-空穴对,表现出良好的光催化特性,可以提高氧化还原反应的速率,氧化难降解有机物用于污染治理,具有无毒、高效、低成本等优点。综述了近年来纳米氧化锌的制备方法及原理,介绍了其光催化性能的机理和表征方法。提出今后需加强对掺杂纳米ZnO的理论和制备技术研究,加大纳米ZnO薄膜光催化性能的研究,对纳米ZnO进行改性,提高光催化活性,进一步拓宽工业化应用领域。

Preparation Techniques and Photocatalysis of Nanometer ZnO

Nanometer ZnO, a functional material, is widely used in the fields of gas sensing, catalysis, energy and photoelectric materials etc.. Under ultraviolet light, nanometer ZnO could form light electron-hole pairs and showed high photocatalytic activity, which could improve the rate of redox reaction, oxidize refractory organic matters for pollution abatement with the advantages of non-toxic, high e/ticiency and low cost. The preparation techniques and principles of nanometer ZnO were summarized, the mechanism and characterization methods of photocatalysis were introduced. The theory and preparing techniques of doped nanometer ZnO system and photocatalysis of nanometer ZnO film should be further studied;the photocatalytic activity could be improved by modification of nanometer ZnO and the industrial applications should be expanded in future.