The role of electron transfer behavior induced by CO chemisorption on visible-light-driven CO conversion over WO3 and CuWO4/WO3 - Details

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Abstract：

Visible-light-driven　CO　conversion　has　attracted　many　research　efforts.　Herein　we　study　the　reaction　mechanism　from　the　perspective　of　electron　transfer　behavior　during　CO　adsorption　(CO　(ad)).　The　WO3　and　CuWO4/WO3　films　were　in-situ　synthesized,　and　then　were　investigated　their　behaviors　for　adsorbing　CO　and　catalyzing　CO　conversion　under　visible　light　via　gas　sensing　system　and　in-situ　DRIFTS　testing,　respectively.　It　was　found　that　the　CO　(ad)　at　W5+-W5+　site　will　form　bridge　adsorbed　CO　species　over　WO3,　and　donate　electrons　to　W5+,　resulting　in　its　light-driven　oxidation　by　O2.　The　CO　(ad)　at　W0　site　forms　linear　and　gem-dicarbonyl　adsorbed　CO　species　over　CuWO4/WO3,　and　accept　electrons　from　W0,　then　its　reduction　by　H2.　The　result　shows　the　light-driven　CO　oxidation　or　reduction　on　WO3　and　CuWO4/WO3　would　be　somewhat　dependent　on　the　electron　transfer　behavior　induced　by　different　modes　of　CO　chemisorption　and　the　Fermi　level　of　sample　itself.　©　2020　Elsevier　B.V.

Keyword：

CO chemisorption; CO oxidation & reduction; DFT calculations; Electron transfer; Photo-assisted gas response

Community：

[ 1 ] [Wang, Z.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 2 ] [Wang, Z.]Key Laboratory of Eco-materials Advanced Technology (Fuzhou University), Fujian Province University, Fuzhou, 350002, China
[ 3 ] [Wang, X.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 4 ] [Wang, X.]Key Laboratory of Eco-materials Advanced Technology (Fuzhou University), Fujian Province University, Fuzhou, 350002, China
[ 5 ] [Wang, H.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 6 ] [Wang, H.]Key Laboratory of Eco-materials Advanced Technology (Fuzhou University), Fujian Province University, Fuzhou, 350002, China
[ 7 ] [Chen, X.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 8 ] [Dai, W.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 9 ] [Dai, W.]Key Laboratory of Eco-materials Advanced Technology (Fuzhou University), Fujian Province University, Fuzhou, 350002, China
[ 10 ] [Fu, X.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China

Reprint 's Address：

[Dai, W.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou UniversityChina

Email：

daiwenxin@fzu.edu.cn

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Source ：

Applied Catalysis B: Environmental

ISSN： 0926-3373

Year： 2020

Volume： 265

1 9 . 5 0 3

JCR@2020

2 0 . 3 0 0

JCR@2023

ESI HC Threshold：160

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 34

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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