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Quantitative Study of Charge Carrier Dynamics in Well-Defined WO3 Nanowires and Nanosheets: Insight into the Crystal Facet Effect in Photocatalysis
Lin, Rui1; Wan, Jiawei2; Xiong, Yu1; Wu, Konglin1; Cheong, Weng-chon1; Zhou, Gang3; Wang, Dingsheng1; Peng, Qing1; Chen, Chen1; Li, Yadong1
2018-07-25
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN0002-7863
Volume140Issue:29Pages:9078-9082
Abstract

Photocatalysts with different morphologies and specific exposed facets usually exhibit distinguished activities. Previous researches have focused on revealing the essence of the facet effect in photocatalysis; however, quantitative analyses on the differences of carrier dynamic between different facets are scarce. Herein, we successfully synthesized WO3 nanosheets and nanowires with dominant exposed facets of {001} and {110}, respectively. The lower hole effective mass on {110} (0.94m(0)) than on {001} (1.28m(0)) calculated by density functional theory leads to the higher hole mobility on {110} (4.92 cm(2) V-1 s(-1)) than on {001} (3.14 cm(2) V-1 s(-1)). Combined with the Einstein equation and the lifetime of the hole, the calculated hole diffusion length on {110} (74.8 nm) is larger than on {001} (53.4 nm). Overall, the lower hole effective mass, higher hole mobility, and greater hole diffusion length on {110} collectively result in a photocatalytic activity on benzyl alcohol oxidation 2.46 times as high as that on {001}.

DOI10.1021/jacs.8b05293
Language英语
WOS KeywordExposed 001 Facets ; Metal-organic Framework ; Anatase Tio2 Nanosheets ; Solar Fuel Synthesis ; Single-crystals ; Cds-pt ; Particles ; Heterostructures ; Photoreactivity ; Transformation
Funding ProjectNational Natural Science Foundation of China[21573119] ; National Natural Science Foundation of China[21590792] ; National Natural Science Foundation of China[21521091] ; National Natural Science Foundation of China[21390393] ; National Natural Science Foundation of China[U1463202] ; National Key R&D Program of China[2017YFA0700101] ; National Key R&D Program of China[2016YFA0202801]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China ; National Key R&D Program of China
WOS IDWOS:000440515200015
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/25541
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Chen
Affiliation1.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100084, Peoples R China
3.Hubei Univ Technol, Sch Sci, Wuhan 430068, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Lin, Rui,Wan, Jiawei,Xiong, Yu,et al. Quantitative Study of Charge Carrier Dynamics in Well-Defined WO3 Nanowires and Nanosheets: Insight into the Crystal Facet Effect in Photocatalysis[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2018,140(29):9078-9082.
APA Lin, Rui.,Wan, Jiawei.,Xiong, Yu.,Wu, Konglin.,Cheong, Weng-chon.,...&Li, Yadong.(2018).Quantitative Study of Charge Carrier Dynamics in Well-Defined WO3 Nanowires and Nanosheets: Insight into the Crystal Facet Effect in Photocatalysis.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,140(29),9078-9082.
MLA Lin, Rui,et al."Quantitative Study of Charge Carrier Dynamics in Well-Defined WO3 Nanowires and Nanosheets: Insight into the Crystal Facet Effect in Photocatalysis".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 140.29(2018):9078-9082.
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