Amorphous Ta2OxNy-enwrapped TiO2 rutile nanorods for enhanced solar photoelectrochemical water splitting - Details

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Abstract：

This　work　demonstrated　the　12　fold-enhanced　solar　water　splitting　over　the　type-II　core-shell　nanostructured　TiO2　rutile　photoanodes　by　orienting　the　charge　flow　and　accelerating　the　hole　transport　to　water-oxidation　sites.　Such　nanoheterostructured　photoanodes　were　designed　rationally　and　prepared　by　a　facile　strategy　to　enwrapping　an　amorphous　Ta2OxNy　layer　on　surface　of　TiO2　nanorods　grown　on　the　FTO　glass　substrates,　consequently　the　incident　photon-to-current　conversion　efficiency　was　increased　from　2.2%　to　22.6%　in　a　two-electrode　system　under　390　nm　light　irradiation.　The　activity　results　showed　that　under　AM　1.5　G　illumination,　the　photocurrent　output　of　TiO2@Ta2OxNy　photoanodes　reached　a　stable　density　of　1.32　mA　cm−2　at　1.23　V　vs　RHE,　and　which　is　12　times　and　ca.　4.3　times　than　that　of　the　pristine　TiO2　and　TiO2@Ta2O5　counterparts,　respectively.　Correspondingly,　the　oxygen　evolution　rate　was　improved　from　20.3　to　112.7　mmol　m−2　h−1.　A　solar-to-chemical　energy　conversion　efficiency　of　ca.　1.49%　was　achieved　at　1.23　V　vs　RHE.　©　2018　Elsevier　B.V.

Keyword：

Core-shell nanostructures; Photoanode; Photoelectrocatalysis; Ta2OxNy; TiO2 nanorods; Water splitting

Community：

[ 1 ] [Zhang, H.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 2 ] [Ma, L.]School of New Materials and New Energies, Shenzhen Technology University, Shenzhen, 518118, China
[ 3 ] [Ming, J.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 4 ] [Liu, B.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 5 ] [Zhao, Y.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 6 ] [Hou, Y.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 7 ] [Ding, Z.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 8 ] [Xu, C.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 9 ] [Zhang, Z.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 10 ] [Long, J.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China

Reprint 's Address：

[Long, J.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou UniversityChina

Email：

jllong@fzu.edu.cn

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Source ：

Applied Catalysis B: Environmental

ISSN： 0926-3373

Year： 2019

Volume： 243

Page： 481-489

1 6 . 6 8 3

JCR@2019

2 0 . 3 0 0

JCR@2023

ESI HC Threshold：184

JCR Journal Grade：1

CAS Journal Grade：1

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SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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