摘要
本文概述了半导体光催化剂的催化原理、影响光催化效率的因素及近几年几类新型非TiO2半导体光催化剂的研究进展。重点选取一些有代表性的新型光催化剂,如Ag3PO4及其复合物、硫化物、非TiO2金属氧化物、铋族化合物及钴族化合物等,分析它们的结构组成对光催化性能的影响。最后,对目前光催化剂研究中存在的主要问题进行总结并对未来光催化剂的发展进行展望。
Photocatalysis, in which solar photons are used to drive redox reactions to produce clean energy resources or to decompose environmental pollutants, has attracted considerable attention as we are facing the increasing challenges of diminishing fossil fuels and severe environmental pollution. Significant efforts have been made to develop various photocatalysts which can fundamentally dictate the overall efficiency of the solar energy conversion system. As a typical class of semiconductor photocatalysts, TiO2based composites have been widely investigated and well reviewed in literatures. Therefore, this review mainly gives a concise overview of several novel non-TiO2 photocatalysts with a focus on their structural architectures and components which affect the catalytic activity. The article here includes five sections. After the first introduction section, the general working principles of semiconductor photocatalysts are presented in the second section. The main factors such as the light harvesting ability, the charge separation efficiency, the structure of the catalyst and the photoelectrochemical stability influencing the overall efficiency of photocatalytic reactions are discussed in section 3. Novel photocatalysts include Ag3PO4 based composites, non-TiO2 metal oxides, sulfides, bismuth compounds and cobalt compounds are reviewed in section 4. Lastly, the fundamental challenges and perspectives of semiconductor photocatalysts are briefly brought up in section 5.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2014年第2期225-233,共9页
Progress in Chemistry
基金
国家自然科学基金项目(No.21273161
21101117)
国家自然科学基金创新研究群体项目(No.81221001)资助~~
关键词
非TiO2光催化剂
结构
组成
催化活性
non-TiO2 photocatalysts
structures
components
catalytic activity
