Sub-2 nm cobalt oxide cluster catalyst supported on alumina for efficient water oxidation

doi:10.1016/j.apcata.2015.11.039

	Sub-2 nm cobalt oxide cluster catalyst supported on alumina for efficient water oxidation
	Chen, Zheng 1,2; Miao, Shu 1; Guan, Jingqi 1; Zhang, Fuxiang 1; Li, Can 1
刊名	APPLIED CATALYSIS A-GENERAL
	2016-07-05
卷号	521 页码:154-159
关键词	Water Oxidation Cobalt Oxide Cluster
ISSN号	0926-860X
DOI	10.1016/j.apcata.2015.11.039
文献子类	Article
英文摘要	Earth-abundant cobalt oxides as active water oxidation catalysts have attracted extensive attention, but the controlled synthesis of small cobalt oxide clusters still remains challenging. Herein we introduce a novel approach to deposit small cobalt oxide clusters on alumina which involves mild oxidation of molecularly dispersed Co-4(CO)(12) precursor. Scanning transmission electron microscope (STEM) shows that the size of prepared CoOx clusters is smaller than 2 nm. Turnover frequency (TOF) value of water oxidation on the synthesized cobalt oxide clusters can reach as high as 0.067 s(-1) in photochemical Ru(bpy)(3)(2+)-Na2S2O8 system, which is at least an order of magnitude higher than bulk cobalt oxide nanoparticles. The remarkably enhanced activity of cobalt oxide cluster is attributed to its more surface-exposed cobalt atoms and higher intrinsic activity. (C) 2015 Published by ElseVier B.V.
WOS关键词	OXYGEN EVOLUTION ; ARTIFICIAL PHOTOSYNTHESIS ; RECENT PROGRESS ; PARTICLE-SIZE ; NANOPARTICLES ; SILICA ; NANOCRYSTALS ; GAMMA-AL2O3 ; CHALLENGES ; DEPOSITION
WOS研究方向	Chemistry ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000379277900022
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170386]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Zhang, Fuxiang; Li, Can
作者单位	1.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, State Key Lab Catalysis,iChEM, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zheng,Miao, Shu,Guan, Jingqi,et al. Sub-2 nm cobalt oxide cluster catalyst supported on alumina for efficient water oxidation[J]. APPLIED CATALYSIS A-GENERAL,2016,521:154-159.
APA	Chen, Zheng,Miao, Shu,Guan, Jingqi,Zhang, Fuxiang,&Li, Can.(2016).Sub-2 nm cobalt oxide cluster catalyst supported on alumina for efficient water oxidation.APPLIED CATALYSIS A-GENERAL,521,154-159.
MLA	Chen, Zheng,et al."Sub-2 nm cobalt oxide cluster catalyst supported on alumina for efficient water oxidation".APPLIED CATALYSIS A-GENERAL 521(2016):154-159.