Nonaqueous synthesis, characterization and catalytic activity of ceria nanorods

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	Nonaqueous synthesis, characterization and catalytic activity of ceria nanorods
	Sun MJ(孙明娟)1,2 ; Zou GJ(邹国军)1 ; Xu S(许珊)1 ; Wang XL(王晓来)1
刊名	Materials Chemistry and Physics
	2012
卷号	134 期号:2-3 页码:912-920
关键词	Oxides Chemical synthesis Electron microscopy Oxidation
ISSN号	0254-0584
通讯作者	王晓来
英文摘要	Large-scale ceria nanorods with high surface area and good crystallization were prepared via a facile nonaqueous process without any surfactants. The results of N₂ adsorption/desorption showed that CeO₂ nanorods possessed large pore volume, which was about 7-fold of that in conventionally synthesized CeO₂ nanoparticles. TEM images revealed the exposure of more reactive {200} and {220} planes, consistent with the favorable formation of more oxygen vacancies on the surface, as confirmed by XPS and O₂-TPD. TPR results demonstrated that low temperature reducibility (max. at 334 degrees C) maintained after reduction-oxidation cycles and even after heat treatment at 900 degrees C, indicating the strong stability of surface active oxygen species. Based on time-dependent morphology evolution of as-prepared precursor, the formation mechanism of nanorod structure was proposed. Furthermore, catalytic performance of CeO₂ nanorods in methane combustion was investigated and compared with that of CeO₂ nanoparticles.
学科主题	物理化学
收录类别	SCI
语种	英语
WOS记录号	WOS:000305918200053
公开日期	2013-10-11
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/3892]
专题	兰州化学物理研究所_OSSO国家重点实验室
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 10039, Peoples R China
推荐引用方式 GB/T 7714	Sun MJ,Zou GJ,Xu S,et al. Nonaqueous synthesis, characterization and catalytic activity of ceria nanorods[J]. Materials Chemistry and Physics,2012,134(2-3):912-920.
APA	Sun MJ,Zou GJ,Xu S,&Wang XL.(2012).Nonaqueous synthesis, characterization and catalytic activity of ceria nanorods.Materials Chemistry and Physics,134(2-3),912-920.
MLA	Sun MJ,et al."Nonaqueous synthesis, characterization and catalytic activity of ceria nanorods".Materials Chemistry and Physics 134.2-3(2012):912-920.