Sn2+and Cu2+Self-Codoped Cu2ZnSnS4Nanosheets Switching from p-Type to n-Type Semiconductors for Visible-Light-Driven CO2Reduction - Details

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Abstract：

Energy　level　engineering　is　a　powerful　technique　to　tune　the　electron　transport　and　the　photocatalytic　properties　of　photocatalyst.　Here,　we　successfully　prepared　Cu2ZnSnS4　nanosheet　photocatalysts　with　low-valence　Sn2+　and　high-valence　Cu2+　self-codoping　by　solvothermal　method.　The　band　gap　energy　level　and　Fermi　level　of　Cu2ZnSnS4　nanosheets　can　be　adjusted　by　controlling　Sn2+　and　Cu2+　self-codoping　at　different　solvothermal　temperature.　This　leads　to　semiconductor　behavior　change　from　p-type　of　the　intrinsic　Cu2ZnSnS4　to　the　n-type　of　self-codoped　sample.　The　n-type　Cu2ZnSnS4　nanosheets　exhibit　a　good　CO2　photoreduction　performance　to　yield　48.14　and　25.04　μmol　g-1　h-1　of　CO　and　CH4,　where　CO　yields　on　n-type　Cu2ZnSnS4　is　about　4　times　higher　than　that　on　the　intrinsic　Cu2ZnSnS4.　This　work　offers　a　versatile　approach　of　different　valence　metal　ion　self-codoping　to　engineer　the　energy　level　of　multimetal　semiconductor　photocatalyst.　©　2022　American　Chemical　Society.

Keyword：

CO2reduction; Cu2ZnSnS4; Energy level engineering; Photocatalysis; Self-codoping

Community：

[ 1 ] [Chai, Y.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 2 ] [Chen, Y.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 3 ] [Wang, B.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 4 ] [Jiang, J.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 5 ] [Liu, Y.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 6 ] [Shen, J.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 7 ] [Wang, X.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 8 ] [Zhang, Z.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 9 ] [Zhang, Z.]Qingyuan Innovation Laboratory, Fuzhou University, Quanzhou, 362801, China

Reprint 's Address：

[Zhang, Z.]State Key Lab of Photocatalysis on Energy and Environment, China

Email：

z.zhang@fzu.edu.cn

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Source ：

ACS Sustainable Chemistry and Engineering

ISSN： 2168-0485

Year： 2022

Issue： 27

Volume： 10

Page： 8825-8834

8 . 4

JCR@2022

7 . 1 0 0

JCR@2023

ESI HC Threshold：74

JCR Journal Grade：1

CAS Journal Grade：2

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SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 3

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