Revealing and accelerating interfacial charge carrier dynamics in Z-scheme heterojunctions for highly efficient photocatalytic oxygen evolution - Details

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Abstract：

Searching　for　highly　efficient　photocatalysts　for　water　oxidation　is　the　footstone　for　the　development　of　overall　water　splitting　systems　and　has　been　actively　pursued.　The　construction　of　artificial　Z-scheme　heterojunction　photocatalysts　has　been　conclusively　proven　to　be　effective　in　boosting　charge　transport　property　and　in　improving　the　OER　performance.　Herein,　Ag3PO4　particles　anchored　on　modified　crispy　g-C3N4　flakes　have　been　successfully　fabricated.　KOH-assisted　surface　modification　of　g-C3N4　flakes　and　intimate　interfacial　contact　favor　the　accelerated　charge　transfer　and　highly　improved　OER　efficiency.　Ultrafast　spectroscopy　results　reveal　that　modified　g-C3N4　with　crispy　nanostructures　possesses　more　trap-induced　long-lived　photogenerated　holes,　which　are　extremely　helpful　to　combine　with　photo-generated　electrons　from　the　conduction　band　(CB)　position　of　Ag3PO4　via　the　specific　Z-scheme　configuration,　leaving　more　holes　in　the　valence　band　(VB)　of　Ag3PO4　for　the　enhanced　OER.　Superb　oxygen-evolving　performance　highlight　the　great　promise　of　Z-scheme　Ag3PO4-based　heterojunctions　in　solar-driven　photocatalytic　water　splitting.　©　2019　Elsevier　B.V.

Keyword：

Ag3PO4; g-C3N4; Photocatalytic oxygen evolution; Ultrafast spectroscopy; Z-scheme

Community：

[ 1 ] [Zhao, C.]College of Science, Institute of Materials Physics and Chemistry, Nanjing Forestry University, Nanjing, 210037, China
[ 2 ] [Tian, L.]School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
[ 3 ] [Zou, Z.]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
[ 4 ] [Chen, Z.]Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, 8093, Switzerland
[ 5 ] [Tang, H.]School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
[ 6 ] [Liu, Q.]School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
[ 7 ] [Lin, Z.]Testing Center, Yangzhou University, Yangzhou, 225009, China
[ 8 ] [Yang, X.]College of Science, Institute of Materials Physics and Chemistry, Nanjing Forestry University, Nanjing, 210037, China
[ 9 ] [Yang, X.]School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
[ 10 ] [Yang, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China
[ 11 ] [Yang, X.]Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, China

Reprint 's Address：

[Yang, X.]College of Science, Institute of Materials Physics and Chemistry, Nanjing Forestry UniversityChina

Email：

xiaofei.yang@njfu.edu.cn

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Source ：

Applied Catalysis B: Environmental

ISSN： 0926-3373

Year： 2020

Volume： 268

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： 81

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 4

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