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题名: Synergetic Integration of Cu1.94S-ZnxCd1-xS Heteronanorods for Enhanced Visible-Light-Driven Photocatalytic Hydrogen Production
作者: Chen, Yueguang1, 2; Zhao, Shu1; Wang, Xian4; Peng, Qing1, 2; Lin, Rui1, 2; Wang, Yu1, 2; Shen, Rongan1, 2; Cao, Xing1, 2; Zhang, Libo3; Zhou, Gang3; Li, Jun1; Xia, Andong4; Li, Yadong1, 2
刊名: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
发表日期: 2016-04-06
卷: 138, 期:13, 页:4286-4289
收录类别: SCI
英文摘要: In this Communication, we present the integration of synergetic designs into high-quality, well-defined Cu1.94S-ZnxCd1-xS heteronanorods (0 <= x <= 1) for enhanced photocatalytic hydrogen evolution. These heteronanorods possess two light absorbers, intimate heterointerfaces, tunable band gaps over a wide range, and uniform one-dimensional morphology. As verified by experimental and density functional theory studies, these heteronanorods with continuous composition adjustment fully exploit the benefits of both interfacial charge separation and optimized band alignments. Even without any cocatalysts, Cu1.94S-Zn0.23Cd0.77S heteronanorods exhibit efficient hydrogen production activity (7735 mu mol h(-1) g(-1)) under visible-light irradiation (lambda > 420 nm), representing a 59-fold enhancement compared with the pristine CdS catalyst. Meanwhile, deposition of a Pt cocatalyst on the Cu1.94S-ZnxCd1-xS surface substantially enhances the hydrogen production performance (13 533 mu mol h(-1) g(-1)) with an apparent quantum efficiency of 26.4% at 420 nm, opening up opportunities to promote the overall photocatalytic performance using rationally designed nanostructures.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35972
Appears in Collections:光化学实验室_期刊论文

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作者单位: 1.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
2.Tsinghua Univ, Collaborat Innovat Ctr Nanomat Sci & Engn, Beijing 100084, Peoples R China
3.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
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