化工进展 ›› 2020, Vol. 39 ›› Issue (2): 521-532.DOI: 10.16085/j.issn.1000-6613.2019-0785

• 工业催化 • 上一篇    下一篇

氧化钨(WO3)薄膜光电催化性能的改善及应用

张文华1,2(),佃丽雯2,陈海燕2,叶文华1,2,胡晓峰1,2,王辉虎1,2(),常鹰1,2,马新国3,董仕节1,2   

  1. 1.湖北工业大学绿色轻工材料湖北省重点实验室,湖北 武汉 430068
    2.湖北工业大学材料与化学工程学院,湖北 武汉 430068
    3.湖北工业大学理学院,湖北 武汉 430068
  • 收稿日期:2019-05-14 出版日期:2020-02-05 发布日期:2020-03-12
  • 通讯作者: 王辉虎
  • 作者简介:张文华(1994—),男,硕士研究生,研究方向为光电催化。E-mail:1098769370@qq.com
  • 基金资助:
    湖北省教育厅重点项目(D20171405)

Improvement on the photoelectrocatalytic performance of tungsten oxide(WO3) thin film and its application prospects

Wenhua ZHANG1,2(),Liwen DIAN2,Haiyan CHEN2,Wenhua YE1,2,Xiaofeng HU1,2,Huihu WANG1,2(),Ying CHANG1,2,Xinguo MA3,Shijie DONG1,2   

  1. 1.Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, Hubei, China
    2.School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, Hubei, China
    3.School of Science, Hubei University of Technology, Wuhan 430068, Hubei, China
  • Received:2019-05-14 Online:2020-02-05 Published:2020-03-12
  • Contact: Huihu WANG

摘要:

半导体WO3具有较小的禁带宽度和良好的稳定性,对可见光具有较强的吸收,在光催化和光电催化领域具有广泛的用途。然而,单一WO3薄膜仍然存在着光生电子-空穴复合率高、光电催化活性与能量转换效率偏低等问题。本文从WO3薄膜光电催化性能的改善及应用两个方面对近年来的研究进行了综述。在WO3薄膜光电催化性能的改善方面,分别从有序纳米结构的构建、离子掺杂与表面修饰进行总结。同时,也归纳总结了WO3薄膜作为光电极在分解水制氢、光电催化还原CO2和降解有机污染物等方面的应用,并提出了WO3薄膜在光电催化过程中存在的问题,指出WO3有序纳米异质结的构建是提高WO3薄膜光电催化活性的有效方法。WO3薄膜光电极的规模制备、廉价助催化剂的使用、光电极的稳定性与耐蚀性是其实际应用过程中需要解决的问题。

关键词: 氧化钨, 膜, 纳米结构, 催化剂, 光电催化

Abstract:

Semiconductor WO3 possesses a small band gap, good stability, and strong absorption in visible light region. Thus, it exhibits a wide range of applications in photocatalysis and photoelectrocatalysis. However, there are still some problems for single WO3 thin films, such as high photogenerated electron-hole recombination rate, low photoelectrocatalytic activity and low energy conversion efficiency. In this paper, recent research progress on the photoelectrocatalytic properties of WO3 thin film is reviewed from two aspects of improvement methods and applications. Regarding the former, methods of construction of ordered nanostructures, ion doping and surface modification were summarized. At the same time, the applications of WO3 thin films as photoelectrodes in water decomposition for hydrogen production, photoelectrocatalytic reduction of CO2 and degradation of organic pollutants were concluded. The problems of WO3 thin films in photoelectrocatalytic process were put forward. It is suggested that the construction of ordered nanoheterojunctions is an effective method to improve the photoelectrocatalytic activity of the WO3 thin films. The large-scale preparation of WO3 thin film photoelectrodes, the use of cheap cocatalysts, the stability and corrosion resistance of the photoelectrodes are the difficult problems to be solved in its practical applications.

Key words: tungsten trioxide, film, nanostructure, catalyst, photoelectrocatalysis

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