标题:Zr-doped CeO_2 Hollow slightly-truncated nano-octahedrons: One-pot synthesis, characterization and their application in catalysis of CO oxidation
作者:Xiufang Liu;Wei Liu;Xueying Zhang;Lu Han;Cong Zhang;Yanzhao Yang
作者机构:[Liu, X] Key Laboratory for Special Functional Aggregate Materials of Education Ministry, School of Chemistry and Chemical Engineering, Shandong Unive 更多
通讯作者:Yang, Y
通讯作者地址:[Yang, YZ]Shandong Univ, Sch Chem & Chem Engn, Educ Minist, Key Lab Special Funct Aggregate Mat, Jinan 250100, Peoples R China.
来源:Crystal Research and Technology: Journal of Experimental and Industrial Crystallography
出版年:2014
卷:49
期:6
页码:383-392
DOI:10.1002/crat.201400039
关键词:Zr-doped;slightly-truncated;nano-octahedrons
摘要:Zirconium-doped ceria hollow slightly-truncated nanooctahedrons (HTNOs) (Ce_(1-x)Zr_xO_2) were synthesized by a one-pot, facile hydrothermal method. The morphology and crystalline structure were characterized with powder X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and the high resolution transmission electron microscopy (HRTEM). The composition and chemical valence on the surface of the as-prepared Ce_(1-x)Zr_xO_2 powders were detected by X-ray photoelectron spectroscopy (XPS) and energy dispersive spectrometry (EDS). The surface area and pore size distribution of as-obtained Zr-doped ceria HTNOs were measured by N_2 adsorptiondesorption measurement. Mechanisms for the growth of Zr-doped ceria HTNOs are proposed as both oriented attachment and Ostwald ripening process and the formation of the hollow structure is strongly dependent on the addition of Zr~(4+) ions. Furthermore, the as-obtained Zr-doped ceria HTNOs revealed superior catalytic activity and thermal stability toward CO oxidation compared to pure ceria. It may provide a new path for the fabrication of inorganic hollow structures on introducing alien metal ions.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:10
Scopus被引频次:9
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902075984&doi=10.1002%2fcrat.201400039&partnerID=40&md5=7ad8ef2c4b78bfc6a99ab5ad6f33dc44
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