MoS2 Quantum Dots@TiO2 Nanotube Arrays: An Extended-Spectrum-Driven Photocatalyst for Solar Hydrogen Evolution - Details

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Abstract：

TiO2　nanotube　arrays　(TiO2　NTAs)　decorated　with　molybdenum　disulfide　quantum　dots　(MoS2　QDs)　were　synthesized　by　a　facile　electrodeposition　method　and　used　as　a　composite　photocatalyst.　MoS2　QDs/TiO2　NTAs　showed　enhanced　photocatalytic　activity　compared　with　pristine　TiO2　NTAs　for　solar　light-promoted　H2　evolution　without　adding　any　sacrificial　agents　or　cocatalysts.　The　photocatalytic　activity　was　influenced　by　the　amount　of　MoS2　QDs　coated　on　TiO2　NTAs.　The　optimal　composition　showed　excellent　photocatalytic　activity,　achieving　H2　evolution　rates　of　31.36,　5.29,　and　1.67　μmol　cm−2　h−1　corresponding　to　ultraviolet　(UV,　λ<420　nm),　visible　(Vis,　λ≥420　nm),　and　near-infrared　(NIR,　λ>760)　illumination,　respectively.　The　improved　photocatalytic　activity　was　attributed　to　the　decreased　bandgap　and　the　surface　plasmonic　properties　of　MoS2　QDs/TiO2　NTAs,　which　promoted　electron–hole　pair　separation　and　the　absorption　capacity　for　Vis　and　NIR　light.　This　study　presents　a　facile　approach　for　fabricating　MoS2　QDs/TiO2　NTA　heterostructures　for　efficient　photocatalytic　H2　evolution,　which　will　facilitate　the　development　of　designing　new　photocatalysts　for　environment　and　energy　applications.　©　2018　Wiley-VCH　Verlag　GmbH　&　Co.　KGaA,　Weinheim

Keyword：

hydrogen evolution; molybdenum disulfide; quantum dots; titanium oxide; water splitting

Community：

[ 1 ] [Wang, Q.]College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
[ 2 ] [Wang, Q.]National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
[ 3 ] [Huang, J.]National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
[ 4 ] [Huang, J.]College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
[ 5 ] [Sun, H.]College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
[ 6 ] [Ng, Y.H.]Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales, High Street, Kensington, NSW 2052, Australia
[ 7 ] [Zhang, K.-Q.]National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
[ 8 ] [Lai, Y.]National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
[ 9 ] [Lai, Y.]College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China

Reprint 's Address：

[Lai, Y.]National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow UniversityChina

Email：

yklai@suda.edu.cn

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Source ：

ChemSusChem

ISSN： 1864-5631

Year： 2018

Issue： 10

Volume： 11

Page： 1708-1721

7 . 8 0 4

JCR@2018

7 . 5 0 0

JCR@2023

ESI HC Threshold：209

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 80

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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