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题名: Redox properties and catalytic performance of ceria-zirconia nanorods
作者: Chen, Aling1;  Zhou, Yan1;  Ta, Na1;  Li, Yong1;  Shen, Wenjie1
刊名: CATALYSIS SCIENCE & TECHNOLOGY
发表日期: 2015
DOI: 10.1039/c5cy00564g
卷: 5, 期:8, 页:4184-4192
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The redox properties and catalytic performance of Ce1-xZrxO2 (0 <= x <= 0.2) nanorods, mainly exposing {110} and {100} planes, were comparatively examined with spherical Ce1-xZrxO2 nanoparticles that predominantly exposed {111} planes. The CeO2 nanorods had a superior redox property and much higher activity towards CO oxidation than the CeO2 nanoparticles, primarily because of the preferential exposure of the reactive {110} planes. However, this shape effect was weakened considerably in Ce1-xZrxO2 (x = 0.05-0.20) nanomaterials. ZrO2-doping promoted the reducibility of the nanoparticles more signifciantly than that of the nanorods, involving different rate-determining steps in the reduction process. The activity for CO oxidation enhanced with increasing ZrO2 content on the nanoparticles but decreased over the nanorods. These results demonstrate that the shape effect of Ce1-xZrxO2 nanomaterials is associated with the amount of zirconia that is incorporated into the ceria lattice.
关键词[WOS]: CEO2-ZRO2 MIXED OXIDES ;  SOLID-SOLUTIONS ;  DIESEL SOOT ;  HYDROTHERMAL SYNTHESIS ;  POLYCRYSTALLINE CERIA ;  SURFACE PLANES ;  CO OXIDATION ;  REDUCTION ;  SHAPE ;  NO
语种: 英语
WOS记录号: WOS:000358237400035
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146405
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Chen, Aling,Zhou, Yan,Ta, Na,et al. Redox properties and catalytic performance of ceria-zirconia nanorods[J]. CATALYSIS SCIENCE & TECHNOLOGY,2015,5(8):4184-4192.
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