兰州大学机构库 >材料与能源学院
Constructing Spatially Separated Cage-Like Z-scheme Heterojunction Photocatalyst for Enhancing Photocatalytic H2 Evolution
Zhao, Fei1,2; Law, Ying Lo3; Zhang, Nan1,2; Wang, Xiao1,2; Wu, Wenli1,2; Luo, Zhengtang3; Wang, Yuhua1,2
2023-06-07
Online publication date2023-03
Source PublicationSmall   Impact Factor & Quartile
ISSN1613-6810
Volume19Issue:23
page numbers12
AbstractHeterojunctions coupled into micro-mesoscopic structures is an attractive strategy to optimize the light harvesting and carrier separation of semiconductor photocatalysts. A self-templating method of ion exchange is reported to synthesize an exquisite hollow cage-structured Ag2S@CdS/ZnS that direct Z-scheme heterojunction photocatalyst. On the ultrathin shell of the cage, Ag2S, CdS, and ZnS with Zn-vacancies (VZn) are arranged sequentially from outside to inside. Among them, the photogenerated electrons are excited by ZnS to the VZn energy level and then recombine with the photogenerated holes that are generated by CdS, while the electrons remained in the CdS conduction band are further transferred to Ag2S. The ingenious cooperation of the Z-scheme heterojunction with the hollow structure optimizes the photogenerated charges transport channel, spatially separated the oxidation and reduction half-reactions, decreases the charge recombination probability, and simultaneously improves the light harvesting efficiency. As a result, the photocatalytic hydrogen evolution activity of the optimal sample is 136.6 and 17.3 times higher than that of cage-like ZnS with VZn and CdS by, respectively. This unique strategy demonstrates the tremendous potential of the incorporation of heterojunction construction to morphology design of photocatalytic materials, and also provided a reasonable route for designing other efficient synergistic photocatalytic reactions. © 2023 Wiley-VCH GmbH.
KeywordHeterojunctions Hydrogen II-VI semiconductors Ion exchange Nitrogen compounds Photocatalytic activity Silver compounds Zinc sulfide Cage likes Cage structures Charge-separation Co catalysts Direct Z-scheme heterojunction H 2 evolution Mesoscopic structure Photo-catalytic Photocatalytic hydrogen evolution Spatial charge separation
PublisherJohn Wiley and Sons Inc
DOI10.1002/smll.202208266
Indexed ByEI ; SCIE
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000945569400001
EI Accession Number20231213791771
EI KeywordsCadmium sulfide
EI Classification Number712.1 Semiconducting Materials ; 714.2 Semiconductor Devices and Integrated Circuits ; 801.4 Physical Chemistry ; 802.2 Chemical Reactions ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds
Original Document TypeJournal article (JA)
PMID 36890784
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/529798
Collection材料与能源学院
Corresponding AuthorLuo, Zhengtang; Wang, Yuhua
Affiliation
1.National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Lanzhou; 730000, China;
2.School of Materials and Energy, Lanzhou University, Lanzhou; 730000, China;
3.Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon; 999077, Hong Kong
First Author AffilicationLanzhou University;  School of Materials & Energy,Lanzhou University
Corresponding Author AffilicationLanzhou University;  School of Materials & Energy,Lanzhou University
Recommended Citation
GB/T 7714
Zhao, Fei,Law, Ying Lo,Zhang, Nan,et al. Constructing Spatially Separated Cage-Like Z-scheme Heterojunction Photocatalyst for Enhancing Photocatalytic H2 Evolution[J]. Small,2023,19(23).
APA Zhao, Fei.,Law, Ying Lo.,Zhang, Nan.,Wang, Xiao.,Wu, Wenli.,...&Wang, Yuhua.(2023).Constructing Spatially Separated Cage-Like Z-scheme Heterojunction Photocatalyst for Enhancing Photocatalytic H2 Evolution.Small,19(23).
MLA Zhao, Fei,et al."Constructing Spatially Separated Cage-Like Z-scheme Heterojunction Photocatalyst for Enhancing Photocatalytic H2 Evolution".Small 19.23(2023).
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