摘要
光解水制氢能否实用化取决于太阳光的有效利用率,研究开发可见光化的光催化剂成为当前光催化剂研究中的重要课题。介绍了光解水制氢的反应机理,叙述了近年来半导体光催化剂在利用可见光方面的研究进展。认为应该寻找本身具有较高的氢生成活性中心的光催化剂,实现不负载Pt等贵金属光解水制氢;循环使用牺牲剂,或无须牺牲剂实现可见光的光解水。如能开发利用海水制氢,则这对于淡水资源和土地资源日益稀缺的我国来说尤为重要。
Hydrogen production from water by solar ray on semiconductor photocatalysts is one of the important ways to solve the world energy crisis. Mechanism of the photocatalytic decomposition of water into hydrogen and oxygen is introduced, and research improvement of semiconductor photocatalysts using visible light in recent years is also described. Some photocatalysts used currently and the ways to improve their activities under visible light are introduced.
出处
《化工生产与技术》
CAS
2008年第2期31-34,共4页
Chemical Production and Technology
基金
河北省教育厅项目(2007120)
关键词
氢
光分解
催化剂
水
可见光
hydrogen
photocatalyst
water decomposition
visible light
