光催化分解水制氢催化剂的修饰与改性

Modification of Photocatalysts for H_2 Evolution from Water Photocatalyzation

光催化分解水产氢是解决能源和环境问题的一种理想途径。传统光催化分解水催化剂存在稳定性差、可见光利用率低、产氢速率低等缺点。通过对催化剂进行修饰与改性,改善其光催化性能,是光催化产氢领域的研究热点。论文简要介绍了光催化反应机理、产氢效率影响因素,系统阐述了目前光催化分解水制氢催化剂的修饰与改性技术,如:离子掺杂、表面修饰、形貌修饰、异质结、固溶体、Z-scheme体系、修饰与改性组合技术等,揭示了其修饰与改性原理及电子转移规律。在此基础上,对未来光催化分解水催化剂的研究工作进行了展望。

Water photocatalyzation for hydrogen evolution is a potential way to solve energy and environmental issues. Traditional photocatalysts have some problems, such as poor stability, inefficient solar energy utilization and low hydrogen production efficiency. Photocatalyst modification has become a hot topic because of its possibility to improve photocatalytic properties thus enhancing hydrogen production efficiency.. The mechanism and influence factors of photocatalytic hydrogen evolution are briefly introduced. Recent research progress in the development of modification strategies and electron transfer mechanism studies, such as ion doping, surface modification, morphology modification, heterojunction, solid solution, Z-scheme system and combined modification strategies, are reviewed. The prospects of photocatalysts for hydrogen evolution are discussed.