Defect engineering of metal-oxide interface for proximity of photooxidation and photoreduction - Details

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Abstract：

Close　proximity　between　different　catalytic　sites　is　crucial　for　accelerating　or　even　enabling　many　important　catalytic　reactions.　Photooxidation　and　photoreduction　in　photocatalysis　are　generally　separated　from　each　other,　which　arises　from　the　hole-electron　separation　on　photocatalyst　surface.　Here,　we　show　with　widely　studied　photocatalyst　Pt/TiO2　as　a　model,　that　concentrating　abundant　oxygen　vacancies　only　at　the　metal-oxide　interface　can　locate　hole-driven　oxidation　sites　in　proximity　to　electron-driven　reduction　sites　for　triggering　unusual　reactions.　Solar　hydrogen　production　from　aqueous-phase　alcohols,　whose　hydrogen　yield　per　photon　is　theoretically　limited　below　0.5　through　conventional　reactions,　achieves　an　ultrahigh　hydrogen　yield　per　photon　of　1.28　through　the　unusual　reactions.　We　demonstrated　that　such　defect　engineering　enables　hole-driven　CO　oxidation　at　the　Pt-　TiO2　interface　to　occur,　which　opens　up　room-temperature　alcohol　decomposition　on　Pt　nanoparticles　to　H2　and　adsorbed　CO,　accompanying　with　electron-driven　proton　reduction　on　Pt　to　H2　©　2019　National　Academy　of　Sciences.　All　rights　reserved.

Keyword：

defect engineering; metal-oxide interface; oxygen vacancy; photocatalyst; solar hydrogen production

Community：

[ 1 ] [Zhou, Y.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 2 ] [Zhou, Y.]Materials Science and Engineering Program, University of Texas at Austin, Austin, TX 78712, United States
[ 3 ] [Zhou, Y.]Department of Mechanical Engineering, University of Texas at Austin, Austin, TX 78712, United States
[ 4 ] [Zhang, Z.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 5 ] [Fang, Z.]Materials Science and Engineering Program, University of Texas at Austin, Austin, TX 78712, United States
[ 6 ] [Fang, Z.]Department of Mechanical Engineering, University of Texas at Austin, Austin, TX 78712, United States
[ 7 ] [Qiu, M.]Department of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 8 ] [Ling, L.]State Key Laboratory for Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
[ 9 ] [Long, J.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 10 ] [Chen, L.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 11 ] [Tong, Y.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 12 ] [Su, W.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 13 ] [Zhang, Y.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 14 ] [Zhang, Y.]Department of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 15 ] [Wu, J.C.S.]Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
[ 16 ] [Basset, J.-M.]Catalysis Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
[ 17 ] [Wang, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
[ 18 ] [Yu, G.]Materials Science and Engineering Program, University of Texas at Austin, Austin, TX 78712, United States
[ 19 ] [Yu, G.]Department of Mechanical Engineering, University of Texas at Austin, Austin, TX 78712, United States

Reprint 's Address：

[Wang, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou UniversityChina

Email：

xwang@fzu.edu.cn

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Source ：

Proceedings of the National Academy of Sciences of the United States of America

ISSN： 0027-8424

Year： 2019

Issue： 21

Volume： 116

Page： 10232-10237

9 . 4 1 2

JCR@2019

9 . 4 0 0

JCR@2023

ESI HC Threshold：283

JCR Journal Grade：1

CAS Journal Grade：1

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WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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