半导体Z反应光解水制氢的光能转换效率及研究进展

Photo conversion efficiency of and research advance in semiconductor Z-scheme photocatalytic water splitting for hydrogen production

通过介绍人工半导体Z反应的原理,综述该类型反应体系,包括模拟PSI催化剂(PS1[H2])、模拟PSII催化剂(PS2[O2])和介体(mediator)应用于人工模拟光解水制氢的研究进展,重点阐述此三者在Z反应中所起的作用及其电子传递机理的发展现状,并通过估算不同介体的光能转换效率比较各反应系统的优缺点,指出无介体Z反应系统的电子传递机理、非贵金属助剂的制备、在光催化还原二氧化碳和光电催化中的应用是未来Z反应研究的重点。

The principle of artificial semiconductor Z-scheme and recent advance in its catalysts for photocatalytic water splitting for hydrogen production are reviewed,including photosystem I catalysts （PS1[H2]） , photosystem II catalysts （PS2[O2]） and their mediators. Their effects in Z-scheme photocatalysis and mechanism of electron transfer of PS1[H2],PS2[O2] and their mediators are illustrated. A comparison of photo conversion efficiency among some of the reported Z-scheme systems is made. Future research on Z-scheme systems should be focused on the mechanism of electron transfer of Z-scheme systems without mediators,synthesis of non-noble metal co-catalysts and applications in photocatalytic reduction of carbon dioxide and photoelectrochemistry.