DICP OpenIR
Two-Dimensional Morphology Enhances Light-Driven H-2 Generation Efficiency in CdS Nanoplatelet-Pt Heterostructures
Li, Qiuyang1; Zhao, Fengjiao2; Qu, Chen1; Shang, Qiongyi1; Xu, Zihao1; Yu, Li1; McBride, James R.3; Lian, Tianquan1
Corresponding AuthorLian, Tianquan(tlian@emory.edu)
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2018-09-19
ISSN0002-7863
DOI10.1021/jacs.8b06100
Volume140Issue:37Pages:11726-11734
Funding ProjectU.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program[DE-FG02-12ER16347]
Funding OrganizationU.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordPHOTOCATALYTIC HYDROGEN GENERATION ; EXCITON LOCALIZATION EFFICIENCY ; QUANTUM DOTS ; SEMICONDUCTOR NANOCRYSTALS ; NANOROD HETEROSTRUCTURES ; ELECTRON-TRANSFER ; CARBONYL-COMPOUNDS ; CHARGE SEPARATION ; DISSOCIATION ; RECOMBINATION
AbstractLight-driven H-2 generation using semiconductor nanocrystal heterostructures has attracted intense recent interest because of the ability to rationally improve their performance by tailoring their size, composition, and morphology. In zero- and one-dimensional nanomaterials, the lifetime of the photoinduced charge-separated state is still too short for H-2 evolution reaction, limiting the solar-to-H-2 conversion efficiency. Here we report that using two-dimensional (2D) CdS nanoplatelet (NPL)-Pt heterostructures, H-2 generation internal quantum efficiency (IQE) can exceed 40% at pH 8.8-13 and approach unity at pH 14.7. The near unity IQE at pH 14.7 is similar to those reported for 1D nanorods and can be attributed to the irreversible hole removal by OH-. At pH < 13, the IQE of 2D NPL-Pt is significantly higher than those in 1D nanorods. Detailed time-resolved spectroscopic studies and modeling of the elementary charge separation and recombination processes show that, compared to 1D nanorods, 2D morphology extends charge-separated state lifetime and may play a dominant role in enhancing the H-2 generation efficiency. This work provides a new approach for designing nanostructures for efficient light-driven H-2 generation.
Language英语
Funding OrganizationU.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program
WOS IDWOS:000445439700029
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/167045
Collection中国科学院大连化学物理研究所
Corresponding AuthorLian, Tianquan
Affiliation1.Emory Univ, Dept Chem, 1515 Dickey Dr Northeast, Atlanta, GA 30322 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Vanderbilt Univ, Dept Chem, Vanderbilt Inst Nanoscale Sci & Engn, Box 1583, Nashville, TN 37235 USA
Recommended Citation
GB/T 7714
Li, Qiuyang,Zhao, Fengjiao,Qu, Chen,et al. Two-Dimensional Morphology Enhances Light-Driven H-2 Generation Efficiency in CdS Nanoplatelet-Pt Heterostructures[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2018,140(37):11726-11734.
APA Li, Qiuyang.,Zhao, Fengjiao.,Qu, Chen.,Shang, Qiongyi.,Xu, Zihao.,...&Lian, Tianquan.(2018).Two-Dimensional Morphology Enhances Light-Driven H-2 Generation Efficiency in CdS Nanoplatelet-Pt Heterostructures.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,140(37),11726-11734.
MLA Li, Qiuyang,et al."Two-Dimensional Morphology Enhances Light-Driven H-2 Generation Efficiency in CdS Nanoplatelet-Pt Heterostructures".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 140.37(2018):11726-11734.
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