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

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

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Inspired by the function of crucial components in photosystem Ⅱ(PSⅡ),electrochemical and dye-sensitized photoelectrochemical(DSPEC)water oxidation devices were constructed by the self-assembly 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 struc-tures.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 dye-sensitized 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 correspond-ing photoanodes was dramatically enhanced.

Water oxidationRate determine stepDye-sensitized photoelectrochemical cellCharge transferArtificial photosynthesis

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

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State Key Laboratory of Fine Chemicals,Frontier Science Center for Smart Materials,Dalian University of Technology,116024 Dalian,Liaoning,China

Department of Chemistry-Ångström,Uppsala University,Box 523,751 20 Uppsala,Sweden

Center of Artificial Photosynthesis for Solar Fuels,School of Science,Westlake University,Hangzhou 310024,Zhejiang,China

Fundamental Research Center of Artificial Photosynthesis(FReCAP)National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key R&D Program of ChinaFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesSwedish National Infrastructure for Computing at the National Supercomputing Center in Link?ping,Sweden

22172011220881022022YFA0911904DUT22LK06DUT22QN213DUT23LAB611allocations SNIC 2022/5-650

2024

10.1016/j.jechem.2024.02.017

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.93(6)
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