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	Interfacial Activation of Catalytically Inert Au (6.7 nm)-Fe3O4 Dumbbell Nanoparticles for CO Oxidation
	Wu, Binghui ; Wu BH(吴炳辉) ; Zhang, Hai ; Zhang H(张海) ; Chen, Cheng ; Chen C(陈诚) ; Lin, Shuichao ; Lin SC(林水潮) ; Zheng, Nanfeng ; Zheng NF(郑南峰)
	2009-12
关键词	Gold nanocatalysts support effect CO oxidation Au-Fe3O4 dumbbell nanoparticles
英文摘要	通讯作者地址: Zheng, NF (通讯作者), Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 电子邮件地址: nfzheng@xmu.edu.cn; Au nanoparticles epitaxially grown on Fe3O4 in Au (6.7 nm)-Fe3O4 dumbbell nanoparticles exhibit excellent stability against sintering, but display negligible catalytic activity in CO oxidation. Starting from various supported Au (6.7 nm)-Fe3O4 catalysts prepared by the colloidal deposition method, we have unambiguously identified the significance of the Au-TiO2 interface in CO oxidation, without any possible size effect of Au. In situ thermal decomposition of TiO2 precursors on Au-Fe3O4 was found to be an effective way to increase the Au-TiO2 interface and thereby optimize the catalytic performance of TiO2-supported Au-Fe3O4 dumbbell nanoparticles. By reducing the size of Fe3O4 from 15.2 to 4.9 nm, the Au-TiO2 contact was further increased so that the resulting TiO2-supported Au (6.7 nm)-Fe3O4 (4.9 nm) dumbbell particles become highly efficient catalysts for CO oxidation at room temperature.; National Natural Science Foundation of China 20871100 20721001 Distinguished Young Investigator Grant 20925103 Research Fund for the Doctoral Program of Higher Education of China 200803841010 Natural Science Foundation of Fujian 2009J06005 Key Scientific Project of Fujian Province 2009HZ0002-1
语种	英语
出版者	TSINGHUA UNIV PRESS
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/3147]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Wu, Binghui,Wu BH,Zhang, Hai,et al. Interfacial Activation of Catalytically Inert Au (6.7 nm)-Fe3O4 Dumbbell Nanoparticles for CO Oxidation[J],2009.
APA	Wu, Binghui.,吴炳辉.,Zhang, Hai.,张海.,Chen, Cheng.,...&郑南峰.(2009).Interfacial Activation of Catalytically Inert Au (6.7 nm)-Fe3O4 Dumbbell Nanoparticles for CO Oxidation..
MLA	Wu, Binghui,et al."Interfacial Activation of Catalytically Inert Au (6.7 nm)-Fe3O4 Dumbbell Nanoparticles for CO Oxidation".(2009).

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