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题名: In Situ Grown Pristine Cobalt Sulfide as Bifunctional Photocatalyst for Hydrogen and Oxygen Evolution
作者: Zheng, M; Ding, Y; Yu, L; Du, XQ; Zhao, YK
收录类别: SCIE
出版日期: 2017-03-17
刊名: ADVANCED FUNCTIONAL MATERIALS
卷号: 27, 期号:1-11
出版者: WILEY
出版地: WEINHEIM
英文摘要: Herein, transition metal chalcogenides of pristine cobalt sulfides are rationally designed to act as robust bifunctional photocatalysts for visible-light- driven water splitting for the first time. Through moderate solvothermal route, cobalt sulfides are synthesized in situ growth and observed by scanning electron microscope image analysis. Noteworthily, 3D hierarchical cobalt sulfides acting as bifunctional photocatalysts are implemented to catalyze the visible-light-driven oxygen evolution reaction and hydrogen evolution reaction. This efficient, earth-abundant, and nonnoble water splitting catalyst for artificial photosynthesis is thoroughly analyzed by various spectroscopic techniques with the aim of investigating its photocatalytic mechanism under visible-light illumination. The main catalyst of CoS-2 exhibits considerable H-2 evolution rate of 1196 mu mol h(-1) g(-1) and O-2 yield of 63.5%. The efficient activity is attributed to the effective electron transfer between the photosensitizer and catalyst, which is verified by transient absorption experiments. The effective electron transfer between the photosensitizer and catalyst during water oxidation is verified by the dramatic decline of [Ru(bpy)(3)](3+) concentration in the presence of the catalyst CoS-2. At the same time, transient absorption experiments support a rapid electron transfers from (EY)-E-3* (excited photosensitizer eosin-Y) to the catalyst CoS-2 for efficient hydrogen evolution.
作者部门: [Zheng, Min ; Ding, Yong ; Yu, Li ; Du, Xiaoqiang ; Zhao, Yukun] Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China ; [Ding, Yong] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China
通讯作者: Ding, Y (reprint author), Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China. ; Ding, Y (reprint author), Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China.
学科分类: Chemistry; Science & Technology - Other Topics; Materials Science; Physics
文章类型: Article
所属项目编号: National Natural Science Foundation of China [21173105, 21572084] ; Fundamental Research Funds for the Central Universities [lzujbky-2016-k08] ; Natural Science Foundation of Gansu [1506RJZA224]
所属项目名称: 国家自然科学基金项目 ; 中央高校基本科研业务费专项资金 ; 甘肃省自然科学基金计划
项目资助者: NSFC ; LZU ; GSSTD
语种: 英语
DOI: 10.1002/adfm.201605846
ISSN号: 1616-301X
WOS记录号: WOS:000397348100021
IR记录号: WOS:000397348100021
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/188994
Appears in Collections:化学化工学院_期刊论文

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Recommended Citation:
Zheng, M,Ding, Y,Yu, L,et al. In Situ Grown Pristine Cobalt Sulfide as Bifunctional Photocatalyst for Hydrogen and Oxygen Evolution[J]. ADVANCED FUNCTIONAL MATERIALS,2017,27(1-11).
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