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High-Pressure Studies on CeO2 Nano-Octahedrons with a (111)-Terminated Surface
Liu, B; Yao, MG; Liu, BB; Li, ZP; Liu, R; Li, QJ; Li, DM; Zou, B; Cui, TA; Zou, GT; Liu, J; Chen, Z; Liu J(刘景)
2011
发表期刊JOURNAL OF PHYSICAL CHEMISTRY C
卷号115期号:11页码:4546-4551
通讯作者[Liu, Bo ; Yao, Mingguang ; Liu, Bingbing ; Li, Zepeng ; Liu, Ran ; Li, Quanjun ; Li, Dongmei ; Zou, Bo ; Cui, Tian ; Zou, Guangtian] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China ; [Liu, Jing] Chinese Acad Sci, Inst High Energy Phys, Beijing 100023, Peoples R China ; [Chen, Zhiqiang] SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA
文章类型Article
摘要In-situ high-pressure X-ray diffraction and Raman spectroscopies have been performed on well-shaped CeO2 nano-octahedrons enclosed by eight (111) planes. The CeO2 nano-octahedrons are shown to be more stable than their bulk counterparts and some other reported CeO2 nanocrystals of smaller size. The transition pressure from cubic to orthorhombic phase is approximately 10 GPa higher than that of 12 nm CeO2 nanocrystals even though they have similar volume expansion at ambient conditions. Additionally, the phase transition to alpha-PbCl2 phase is very sluggish and uncompleted even up to 55 GPa. The TEM image of the sample after decompression from 55 GPa clearly shows that the nano-octahedrons preserve the starting shape. Such distinct high-pressure behaviors in CeO2 nano-octahedrons have been discussed in terms of their special exposure surface. Further analysis shows that the lower compressibility of the exposed (111) planes in the nano-octahedrons is believed to be the major factor to the elevation of the phase transition pressure and the sluggishness of the transition.
学科领域Chemistry; Science & Technology - Other Topics; Materials Science
DOI10.1021/jp111510m
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语种英语
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号WOS:000288401200026
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被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239982
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Liu, B,Yao, MG,Liu, BB,et al. High-Pressure Studies on CeO2 Nano-Octahedrons with a (111)-Terminated Surface[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2011,115(11):4546-4551.
APA Liu, B.,Yao, MG.,Liu, BB.,Li, ZP.,Liu, R.,...&刘景.(2011).High-Pressure Studies on CeO2 Nano-Octahedrons with a (111)-Terminated Surface.JOURNAL OF PHYSICAL CHEMISTRY C,115(11),4546-4551.
MLA Liu, B,et al."High-Pressure Studies on CeO2 Nano-Octahedrons with a (111)-Terminated Surface".JOURNAL OF PHYSICAL CHEMISTRY C 115.11(2011):4546-4551.
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