Direct and indirect Z-scheme heterostructure-coupled photosystem enabling cooperation of CO2 reduction and H2O oxidation - Details

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Abstract：

The　stoichiometric　photocatalytic　reaction　of　CO2　with　H2O　is　one　of　the　great　challenges　in　photocatalysis.　Here,　we　construct　a　Cu2O-Pt/SiC/IrOx　composite　by　a　controlled　photodeposition　and　then　an　artificial　photosynthetic　system　with　Nafion　membrane　as　diaphragm　separating　reduction　and　oxidation　half-reactions.　The　artificial　system　exhibits　excellent　photocatalytic　performance　for　CO2　reduction　to　HCOOH　and　H2O　oxidation　to　O2　under　visible　light　irradiation.　The　yields　of　HCOOH　and　O2　meet　almost　stoichiometric　ratio　and　are　as　high　as　896.7　and　440.7　μmol　g−1　h−1,　respectively.　The　high　efficiencies　of　CO2　reduction　and　H2O　oxidation　in　the　artificial　system　are　attributed　to　both　the　direct　Z-scheme　electronic　structure　of　Cu2O-Pt/SiC/IrOx　and　the　indirect　Z-scheme　spatially　separated　reduction　and　oxidation　units,　which　greatly　prolong　lifetime　of　photogenerated　electrons　and　holes　and　prevent　the　backward　reaction　of　products.　This　work　provides　an　effective　and　feasible　strategy　to　increase　the　efficiency　of　artificial　photosynthesis.　©　2020,　The　Author(s).

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[ 1 ] [Wang, Y.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 2 ] [Wang, Y.]Key Lab of Inorganic Synthetic and Applied Chemistry, State Key Lab Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
[ 3 ] [Shang, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 4 ] [Shen, J.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 5 ] [Zhang, Z.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 6 ] [Wang, D.]Key Lab of Inorganic Synthetic and Applied Chemistry, State Key Lab Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
[ 7 ] [Lin, J.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 8 ] [Wu, J.C.S.]Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
[ 9 ] [Fu, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 10 ] [Wang, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 11 ] [Li, C.]State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China

Reprint 's Address：

[Zhang, Z.]State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, Department of Chemical Engineering, National Taiwan University, State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of SciencesChina

Email：

z.zhang@fzu.edu.cn

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Source ：

Nature Communications

ISSN： 2041-1723

Year： 2020

Issue： 1

Volume： 11

1 4 . 9 1 9

JCR@2020

1 4 . 7 0 0

JCR@2023

ESI HC Threshold：420

JCR Journal Grade：1

CAS Journal Grade：1

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WoS CC Cited Count：

SCOPUS Cited Count： 262

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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