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基于非贵金属镍的金属有机大环的光解水放氢性能

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Indexed by:期刊论文

Date of Publication:2017-12-29

Journal:无机化学学报

Included Journals:SCIE

Volume:34

Issue:1

Page Number:11-19

ISSN No.:1001-4861

Key Words:金属有机大环;镍;光催化产氢;超分子

Abstract:将具有NN(氮氮)双齿配位点的席夫碱配体L2(L2=1,4-苯二-2'-吡啶腙)与镍构筑得到一例[2+2]型金属有机大环[Ni2(L2)2(CH3CN)4](CI04)4·4CH3CN (2),并将其用于可见光条件下的光解水产氢研究.该非贵金属光催化体系由催化剂、光敏剂(荧光素,Fl)和电子牺牲剂(三乙胺)三部分组成.相比于具有相同配位环境的单核配合物[Ni(L1)2(CH3CN)2](ClO4)2(1,L1=3-甲酰基苯-2'-吡啶腙),金属有机大环2作为催化剂具有较高的光催化活性,其产氢TON值可以达到3 100 molH2·molcat-1,归因于荧光素分子可能与金属有机大环2形成超分子配合物,提高了光致电子转移效率.

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