Photocatalytic solar fuel production and environmental remediation through experimental and DFT based research on CdSe-QDs-coupled P-doped-g-C3N4 composites - Details

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Abstract：

Solar　energy　harvesting　and　conversion　into　useful　chemical　energy　with　the　aid　of　semiconductor　photocatalysts　is　a　promising　technique　to　solve　both　energy　and　environmental　issues.　This　work　reports　a　successful　synthesis　of　CdSe　quantum　dots　(QDs)　modified　phosphorus　doped　g-C3N4　(P-CN)　for　advanced　photocatalytic　applications.　Phosphorus　doping　and　structural　coupling　with　CdSe　QDs　are　shown　to　significantly　extend　visible-light　response　of　g-C3N4　up　to　700　nm.　The　optimized　sample　4CdSe/P-CN　demonstrates　enhanced　visible-light　driven　overall　water　splitting　activities　for　H2　and　O2　evolution　i.e.　113　and　55.5　μmol.h−1.　g−1,　respectively,　as　well　as　very　high　photocatalytic　CO2　to　CH4　conversion　efficiency　(47　μmol.h−1.　g−1).　It　also　exhibit　higher　activity　(78　%)　for　2,4-dichlorophenol　degradation　as　compared　to　pristine　CN-sample.　Combined　photoluminescence,　transient/single　wavelength　photocurrent,　photoelectrochemical,　and　coumarin　fluorescence　spectroscopy　demonstrate　that　4CdSe/P-CN　nanocomposite　exhibit　enhanced　charge　separation　efficiency　which　is　responsible　for　improved　visible　light　catalytic　activities.　Our　work　thus　provide　a　new　strategy　to　design　low-cost　and　sustainable　photocatalysis　with　wide　visible-light　activity　for　practical　overall　water　splitting　and　CO2　reduction　applications.　©　2020　Elsevier　B.V.

Keyword：

CdSe quantum dots; Expending visible-light response; g-C3N4; Phosphorus doping; Solar fuel

Community：

[ 1 ] [Raziq, F.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 2 ] [Hayat, A.]College of Chemistry, Fuzhou University, Fuzhou, 350100, China
[ 3 ] [Humayun, M.]Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
[ 4 ] [Baburao Mane, S.K.]School of Environment and Energy, South China University of Science and Technology, Guangzhou, China
[ 5 ] [Faheem, M.B.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 6 ] [Ali, A.]School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4001, Australia
[ 7 ] [Zhao, Y.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 8 ] [Han, S.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 9 ] [Cai, C.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 10 ] [Li, W.]School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4001, Australia
[ 11 ] [Qi, D.-C.]School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4001, Australia
[ 12 ] [Yi, J.]Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia
[ 13 ] [Yu, X.]Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
[ 14 ] [Breese, M.B.H.]Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore, 117603, Singapore
[ 15 ] [Breese, M.B.H.]Department of Physics, National University of Singapore, Singapore, 117542, Singapore
[ 16 ] [Hassan, F.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 17 ] [Ali, F.]Department of Chemistry, Hazara University, Mansehra, 21300, Pakistan
[ 18 ] [Mavlonov, A.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 19 ] [Dhanabalan, K.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 20 ] [Xiang, X.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 21 ] [Zu, X.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 22 ] [Li, S.]School of Materials, University of New South Wales, Sydney, Australia
[ 23 ] [Qiao, L.]School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China
[ 24 ] [Qiao, L.]School of Materials, University of New South Wales, Sydney, Australia

Reprint 's Address：

[Qiao, L.]School of Physics, University of Electronic Science and Technology of ChinaChina

Email：

liang.qiao@uestc.edu.cn

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Source ：

Applied Catalysis B: Environmental

ISSN： 0926-3373

Year： 2020

Volume： 270

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： 176

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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