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In situ topotactic fabrication of direct Z-scheme 2D/2D ZnO/ZnxCd1-xS single crystal nanosheet heterojunction for efficient photocatalytic water splitting | |
Shi, Jingjing1; Li, Shuangde2; Wang, Fengming1; Li, Yanmei1; Gao, Lina1; Zhang, Xiaorang1; Lu, Jun1 | |
2018-12-21 | |
Source Publication | CATALYSIS SCIENCE & TECHNOLOGY
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ISSN | 2044-4753 |
Volume | 8Issue:24Pages:6458-6467 |
Abstract | Direct Z-scheme heterojunction can effectively enhance the photocatalytic activity due to its low carrier recombination rate and high redox ability. In this study, a 2D/2D ZnO/ZnxCd1-xS single crystal nanosheet heterojunction is synthesized in situ by topotactic sulfurization/oxidization pyrolysis of Zn/Cd/Al layer double hydroxides (LDHs). Its unique structure provides not only numerous intimate interfaces but also a direct Z-scheme junction. The in situ topotactic fabrication of ZnO by the oxidation process causes some Zn ions to dissolve out from the Zn(0.67)Cd(0.3)3S solid solution nanosheets with increase in annealing temperature and time. The longer the time for oxidation, the more ZnO is obtained. The formation of ZnO yields 2D/2D ZnO/ZnxCd1-xS single crystal nanosheet heterojunction, which increases the visible light absorption and boosts the separation of photogenerated carriers. The ZnO/ZnxCd1-xS-4 single crystal nanosheet heterojunction presents the highest photocatalytic activity under visible light irradiation (38.93 mmol h(-1) g(-1)), which is nearly 16.93 times higher than that of Zn0.67Cd0.33S-300, and an external quantum efficiency of 40.97% at = 420 nm. The proposed synthetic route for the construction of 2D/2D ZnO/ZnxCd1-xS single crystal nanosheet provides a direct Z-scheme structure with highly efficient photocatalytic hydrogen evolution activity. |
DOI | 10.1039/c8cy01884g |
Language | 英语 |
WOS Keyword | Highly Efficient ; Environmental Remediation ; Charge Separation ; H-2 Evolution ; Quantum Dots ; Cds ; Performance ; Tio2 ; Wo3 ; Nanocomposites |
Funding Project | 973 Program[2014CB932101] ; National Natural Science Foundation of China ; 111 Project[B07004] ; Program for Changjiang Scholars and Innovative Research Team in University[IRT1205] ; Fundamental Research Funds for the Central Universities[buctrc201527] ; Open Research Fund of State Key Laboratory of Multi-phase Complex Systems[MPCS-2017-D-06] |
WOS Research Area | Chemistry |
WOS Subject | Chemistry, Physical |
Funding Organization | 973 Program ; National Natural Science Foundation of China ; 111 Project ; Program for Changjiang Scholars and Innovative Research Team in University ; Fundamental Research Funds for the Central Universities ; Open Research Fund of State Key Laboratory of Multi-phase Complex Systems |
WOS ID | WOS:000453549100014 |
Publisher | ROYAL SOC CHEMISTRY |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/27569 |
Collection | 中国科学院过程工程研究所 |
Corresponding Author | Lu, Jun |
Affiliation | 1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, P Box 98,15 Beisanhuan East Rd, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China |
Recommended Citation GB/T 7714 | Shi, Jingjing,Li, Shuangde,Wang, Fengming,et al. In situ topotactic fabrication of direct Z-scheme 2D/2D ZnO/ZnxCd1-xS single crystal nanosheet heterojunction for efficient photocatalytic water splitting[J]. CATALYSIS SCIENCE & TECHNOLOGY,2018,8(24):6458-6467. |
APA | Shi, Jingjing.,Li, Shuangde.,Wang, Fengming.,Li, Yanmei.,Gao, Lina.,...&Lu, Jun.(2018).In situ topotactic fabrication of direct Z-scheme 2D/2D ZnO/ZnxCd1-xS single crystal nanosheet heterojunction for efficient photocatalytic water splitting.CATALYSIS SCIENCE & TECHNOLOGY,8(24),6458-6467. |
MLA | Shi, Jingjing,et al."In situ topotactic fabrication of direct Z-scheme 2D/2D ZnO/ZnxCd1-xS single crystal nanosheet heterojunction for efficient photocatalytic water splitting".CATALYSIS SCIENCE & TECHNOLOGY 8.24(2018):6458-6467. |
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In situ topotactic f(3181KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text |
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