In Situ Grown Pristine Cobalt Sulfide as Bifunctional Photocatalyst for Hydrogen and Oxygen Evolution | |
Department | OSSO国家重点实验室 |
Zheng, Min1; Ding Y(丁勇)1,2; Yu, Li1; Du, Xiaoqiang1; Zhao, Yukun1; Ding Y(丁勇) | |
2017 | |
Source Publication | Advanced Functional Materials |
ISSN | 1616-301X |
Volume | 27Issue:11Pages:1605846(1-11) |
Abstract | 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 H2 evolution rate of 1196 µmol h−1 g−1 and O2 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 3EY* (excited photosensitizer eosin-Y) to the catalyst CoS-2 for efficient hydrogen evolution. |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1002/adfm.201605846 |
Funding Organization | the National Natural Science Foundation of China (Grant Nos. 21173105;21572084);Fundamental Research Funds for the Central Universities (lzujbky–2016–k08);the Natural Science Foundation of Gansu (1506RJZA224) |
Indexed By | SCI |
If | 12.124 |
Language | 英语 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21607 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Ding Y(丁勇) |
Affiliation | 1.Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China |
Recommended Citation GB/T 7714 | Zheng, Min,Ding Y,Yu, Li,et al. In Situ Grown Pristine Cobalt Sulfide as Bifunctional Photocatalyst for Hydrogen and Oxygen Evolution[J]. Advanced Functional Materials,2017,27(11):1605846(1-11). |
APA | Zheng, Min,Ding Y,Yu, Li,Du, Xiaoqiang,Zhao, Yukun,&丁勇.(2017).In Situ Grown Pristine Cobalt Sulfide as Bifunctional Photocatalyst for Hydrogen and Oxygen Evolution.Advanced Functional Materials,27(11),1605846(1-11). |
MLA | Zheng, Min,et al."In Situ Grown Pristine Cobalt Sulfide as Bifunctional Photocatalyst for Hydrogen and Oxygen Evolution".Advanced Functional Materials 27.11(2017):1605846(1-11). |
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