Amorphous Cobalt Oxide Nanoparticles as Active Water-Oxidation Catalysts

	Amorphous Cobalt Oxide Nanoparticles as Active Water-Oxidation Catalysts
	Chen, Zheng 4,5; Duan, Zhiyao 1,6; Wang, Zhiliang 4,5; Liu, Xiaoyan 4,5; Gu, Lin 7; Zhang, Fuxiang 4,5; Dupuis, Michel 2,3; Li, Can 4,5
刊名	CHEMCATCHEM
	2017-10-10
卷号	9 期号:19 页码:3641-3645
关键词	amorphous materials cobalt oxidation water chemistry X-ray absorption spectroscopy
英文摘要	Artificial photosynthesis requires the practical use of efficient, robust, and economical water-oxidation catalysts (WOCs) for chemical-fuel production. The synthesis of amorphous cobalt oxide nanoparticles (ca. 2nm) is reported as a WOC with a turnover frequency up to 8.6s(-1) in the photocatalytic Ru(bpy)(3)(2+)-Na2S2O8 system (bpy=2,2-bipyridyl). This activity is unprecedented in heterogeneous cobalt-based WOCs and is even comparable to that of a state-of-the-art homogeneous cobalt-based polyoxometalate catalyst. With the help of experimental and computational X-ray absorption spectroscopy, the atomic structure of the synthesized amorphous cobalt oxide nanoparticles was characterized, and it consists of a one-dimensional chain of dimeric edge-sharing CoO6 octahedra. Theoretical calculations suggest that this structure was able to promote O-O bond coupling, unlike crystalline cobalt oxide WOCs, which led to the enhanced water-oxidation activity.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	OXYGEN REDUCTION ; EVOLUTION ; PHOTOSYNTHESIS ; PERSULFATE ; CHALLENGES ; EFFICIENT ; HEMATITE
收录类别	SCI
语种	英语
WOS记录号	WOS:000412656600005
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150153]
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
作者单位	1.Univ Texas Austin, Inst Computat & Engn Sci, Austin, TX 78712 USA 2.Univ Buffalo State Univ New York, Computat & Data Enabled Sci & Engn Program, Buffalo, NY 14260 USA 3.Univ Buffalo State Univ New York, Dept Chem & Biol Engn, Buffalo, NY 14260 USA 4.Chinese Acad Sci, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Univ Texas Austin, Dept Chem, Austin, TX 78712 USA 7.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zheng,Duan, Zhiyao,Wang, Zhiliang,et al. Amorphous Cobalt Oxide Nanoparticles as Active Water-Oxidation Catalysts[J]. CHEMCATCHEM,2017,9(19):3641-3645.
APA	Chen, Zheng.,Duan, Zhiyao.,Wang, Zhiliang.,Liu, Xiaoyan.,Gu, Lin.,...&Li, Can.(2017).Amorphous Cobalt Oxide Nanoparticles as Active Water-Oxidation Catalysts.CHEMCATCHEM,9(19),3641-3645.
MLA	Chen, Zheng,et al."Amorphous Cobalt Oxide Nanoparticles as Active Water-Oxidation Catalysts".CHEMCATCHEM 9.19(2017):3641-3645.