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题名: Porous Co3O4/CuO hollow polyhedral nanocages derived from metal-organic frameworks with heterojunctions as efficient photocatalytic water oxidation catalysts
作者: Zhang, Y; Huang, JW; Ding, Y(丁勇)
收录类别: SCIE ; EI
出版日期: 2016-12-05
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
卷号: 198, 页码:447-456
出版者: ELSEVIER
出版地: AMSTERDAM
英文摘要: A novel material of porous Co3O4/CuO hollow polyhedral nanocages (HPNCs) derived-from metal-organic frameworks (MOF) for photocatalytic water oxidation was reported for the first time and the molar ratio of Co/Cu in this kind material was optimized. The Co3O4/CuO HPNCs composites were characterized by multiple experiments (FETEM, HRTEM, SEM, TGA, PXRD, EDX, ICP-AES, BET, XPS) to confirm the structure and the component. A high turnover frequency (TOF) of 4.9 x 10(-3) s(-1) per metal atom was obtained over Co3O4/CuO-3 HPNCs, which is comparable to those published cobalt based catalysts. At the same time, Co3O4/CuO-3 HPNCs showed a maximum oxygen yield of 50% and quantum yield of 49%. This composite of Co3O4/CuO HPNCs containing heterojunctions may enhance the photocatalytic performance of water oxidation.Various characterization methods prove that Co3O4/CuO HPNCs composites are stable and robust heterogeneous photocatalytic catalysts that can be used repeatedly without any loss in activity. According to the experimental results, we speculate that there are two kinds of reaction mechanisms in this light-driven water oxidation system. One mechanism is widely accepted that high valence metal species play a role in the reaction system. The other one is that the heterojunctions of Co3O4/CuO HPNCs make a great contribution to improve the activity of photocatalytic water oxidation. Meanwhile, we put forward a new idea to design a series of metal oxide catalysts with heterojunctions derived from MOF for light-driven water oxidation. (C) 2016 Elsevier B.V. All rights reserved.
关键词: Water oxidation ; Metal-organic frameworks ; Cobalt oxide ; Heterojunctions ; Copper oxide
作者部门: [Zhang, Yan ; Huang, Jingwei ; Ding, Yong] 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.
学科分类: Chemistry; Engineering
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, lzujbky-2016-210]
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
项目资助者: NSFC ; LZU
语种: 英语
DOI: 10.1016/j.apcatb.2016.05.078
ISSN号: 0926-3373
WOS记录号: WOS:000381950000045
EI记录号: 20162502525894
IR记录号: WOS:000381950000045
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/180608
Appears in Collections:化学化工学院_期刊论文

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Recommended Citation:
Zhang, Y,Huang, JW,Ding, Y. Porous Co3O4/CuO hollow polyhedral nanocages derived from metal-organic frameworks with heterojunctions as efficient photocatalytic water oxidation catalysts[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2016,198:447-456.
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