Photodeposited CoOx as highly active phases to boost water oxidation on BiVO4/WO3 photoanode - Details

author：

Zhang, L. (Zhang, L..) ^[1] | Yang, M. (Yang, M..) ^[2] | Luo, Z. (Luo, Z..) ^[3] | Zhang, J. (Zhang, J..) ^[4] | Hou, Y. (Hou, Y..) ^[5]

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Scopus

Abstract：

Surface　decoration　of　photoanodes　with　oxygen　evolution　cocatalysts　is　an　efficient　approach　to　improve　the　photoelectrochemical　water　splitting　performance.　Herein,　ultrafine　CoOx　was　selectively　immobilized　on　the　surface　of　BiVO4/WO3　photoanode　by　using　the　photogenerated　holes　to　in-situ　oxidize　Co4O4　cubane.　The　composited　photoanode　(CoOx/BiVO4/WO3)　displayed　an　enhanced　photoelectrochemical　(PEC)　water　oxidation　performance,　with　a　photocurrent　density　of　2.3　mA/cm2　at　1.23　VRHE　under　the　simulated　sunlight　irradiation,　which　was　2　times　higher　than　that　of　bare　BiVO4/WO3.　The　characterization　results　for　the　morphological,　optical　and　electrochemical　properties　of　the　photoelectrodes　revealed　that,　the　enhanced　PEC　performances　could　be　attributed　to　the　improved　charge　carrier　separation/transport　behaviors　and　the　promoted　water　oxidation　kinetics　when　the　photoelectrodes　were　loaded　with　CoOx.　©　2019　Hydrogen　Energy　Publications　LLC

Keyword：

Co4O4 cubane; Cocatalyst; CoOx; Photodeposition; Water splitting

Community：

[ 1 ] [Zhang, L.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
[ 2 ] [Yang, M.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
[ 3 ] [Luo, Z.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
[ 4 ] [Zhang, J.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
[ 5 ] [Hou, Y.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China

Reprint 's Address：

[Hou, Y.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou UniversityChina

Email：

ydhou@fzu.edu.cn

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Source ：

International Journal of Hydrogen Energy

ISSN： 0360-3199

Year： 2019

Issue： 47

Volume： 44

Page： 25652-25661

4 . 9 3 9

JCR@2019

8 . 1 0 0

JCR@2023

ESI HC Threshold：150

JCR Journal Grade：2

CAS Journal Grade：3

Cited Count：

WoS CC Cited Count： 0

SCOPUS Cited Count： 24

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 0

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