基于Ir(III)、Ru(II)配合物染料的可见光驱动水分解制氢体系的研究进展
首发时间:2016-06-02
摘要:光催化分解水制氢是利用可再生太阳能制取洁净能源氢气的有效途径。鉴于光催化产氢过程中所必需的多步电子转移和积累,人们从促进光吸收中心向金属催化中心有效、定向的电子转移过程入手,来提高光催化效率。其中,设计与利用新型的Ir(III)、Ru(II)配合物染料作为吸光剂和催化剂,有效提高光催化分解水制氢的效率,是该领域当前的研究热点。本文简要介绍了近几年国际上对于Ir(III)、Ru(II)配合物染料参与的可见光分解水制氢体系的研究进展,包括均相和非均相光催化体系,并简要介绍了循环伏安、荧光淬灭以及催化剂中毒实验在光催化机理研究中的应用。
关键词: 物理化学 Ir(III)/Ru(II)配合物 光催化 制氢
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Research Progress of Photoinduced H2 Production from H2O in Visible-Light-Driven Systems Containing Ir(III) and Ru(II) Complexes
Abstract:Photocatalytic decomposition of water for hydrogen production is one of the effective pathways for renewable solar energy utilization. Concerning the multi-step electron transfer and accumulation processes in photocatalytic hydrogen production, various methods have been applied to improve the electron transfer from light absorption center to catalytic center. Among which, a variety of Ir (III), Ru (II) complexes have been designed and applied as both the absorption and catalytic centers to effectively improve the photocatalytic efficiency. In this review, the recent research progress on the photoinduced H2 production from H2O in visible-light-driven systems containing Ir(III) and Ru(II) complexes will be introduced, including the photophysical properties of Ir(III)/Ru(II) complexes, and their application in homogeneous and the heterogeneous catalytic systems. The application of cyclic voltammetry(CV), fluorescence quenching, and catalyst poisoning for the deep study of photocatalytic mechanism is also described.
Keywords: physical chemistry Ir(III)/Ru(II) complex photocatalysis hydrogen production
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