摘要
光电催化技术是一种新型的电化学辅助光催化技术,即通过施加阳极偏压抑制光生电子和空穴的复合,达到提高光催化效率的目的。近年来,光电催化技术在水处理技术研究领域受到广泛关注。简述了光电催化技术的基本原理,总结了可见光响应光阳极的研制进展;从光电反应器的构型、原理和主要特点3个方面分别介绍了悬浮型、负载型和复合光电催化反应器系统;归纳了光电催化技术在水处理和污染物资源化回收方面的应用;探讨了光电催化水处理技术在实际应用方面存在的问题,并展望了其研究前景。
Photoelectrocatalytic （PEC） technology is a new electrochemical-assisted photocatalytic （PC） technology which inhibits the recombination of photoelectron and photohole by adding anode bias resulting in enhancing photocatalytic efficiency. Recently, PEC technology has attracted wide attention since it shows a great application prospect in water treatment. The mechanisms of PEC technology were sketched, and the developments of visible light-responsive photoanode were summarized. PEC reactors classified as slurry PEC reactors, immobilized PEC reactors and composite PEC reactors were separately introduced, followed by their configurations, mechanisms, and features. Moreover, the applications in water treatment and pollutants PEC conversion were also summarized. The shortcomings of PEC technology in water treatment application were discussed and the outlook of this technology was predicted.
作者
吴小琼
沈江珊
朱君秋
郑煜铭
WU Xiaoqiong SHEN Jiangshan ZHU Junqiu ZHENG Yuming(CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China Departmeut of Energy Materials, Xiamen University of Technology, Xiamen 361024, China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2017年第2期76-82,共7页
Environmental Science & Technology
基金
国家自然科学基金重点项目:城市污水厂出水中有机污染物的富集-催化处理新方法的研究(5153000136)
中国科学院"百人计划"项目
关键词
光电催化技术
光阳极
光电催化反应器
水处理
photoelectrocatalytic technology
photoanode
photoelectrocatalytic reactor
water treatment
