Influence of O-O formation pathways and charge transfer mediator on lipid bilayer membrane-like photoanodes for water oxidation  

作　　者：Yingzheng Li Shaoqi Zhan Zijian Deng Meng Chen Yilong Zhao Chang Liu Ziqi Zhao Hongxia Ning Wenlong Li Fei Li Licheng Sun Fusheng Li 

机构地区：[1]State Key Laboratory of Fine Chemicals,Frontier Science Center for Smart Materials,Dalian University of Technology,116024 Dalian,Liaoning,China [2]Department of Chemistry-Ångström,Uppsala University,Box 523,75120 Uppsal1,Sweden [3]Center of Artificial Photosynthesis for Solar Fuels,School of Science,Westlake University,Hangzhou 310024,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2024年第6期526-537,I0013,共13页能源化学（英文版）

基　　金：conducted by the Fundamental Research Center of Artificial Photosynthesis(FReCAP);financially supported by the National Natural Science Foundation of China(22172011 and 22088102);the National Key R&D Program of China(2022YFA0911904);the Fundamental Research Funds for the Central Universities(DUT22LK06,DUT22QN213 and DUT23LAB611)。

摘　　要：Inspired by the function of crucial components in photosystemⅡ(PSⅡ),electrochemical and dyesensitized photoelectrochemical(DSPEC)water oxidation devices were constructed by the selfassembly of well-designed amphipathic Ru(bda)-based catalysts(bda=2,2'-bipyrdine-6,6'-dicarbonoxyl acid)and aliphatic chain decorated electrode surfaces,forming lipid bilayer membrane(LBM)-like structures.The Ru(bda)catalysts on electrode-supported LBM films demonstrated remarkable water oxidation performance with different O-O formation mechanisms.However,compared to the slow charge transfer process,the O-O formation pathways did not determine the PEC water oxidation efficiency of the dyesensitized photoanodes,and the different reaction rates for similar catalysts with different catalytic paths did not determine the PEC performance of the DSPECs.Instead,charge transfer plays a decisive role in the PEC water oxidation rate.When an indolo[3,2-b]carbazole derivative was introduced between the Ru(bda)catalysts and aliphatic chain-modified photosensitizer in LBM films,serving as a charge transfer mediator for the tyrosine-histidine pair in PSⅡ,the PEC water oxidation performance of the corresponding photoanodes was dramatically enhanced.

关 键 词：Water oxidation Rate determine step Dye-sensitized photoelectrochemical cell Charge transfer Artificial photosynthesis 

分 类 号：TQ426[化学工程] TM914[电气工程—电力电子与电力传动]