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题名: Pressure-induced phase transitions of exposed curved surface nano-TiO2 with high photocatalytic activity
作者: Huang, YW; Chen, FJ; Li, X; Yuan, Y; Dong, HN; Samanta, S; Yu, ZH; Rahman, S; Zhang, J; Yang, K; Yan, S; Wang, L
刊名: JOURNAL OF APPLIED PHYSICS
出版日期: 2016
卷号: 119, 期号:21, 页码:-
DOI: 10.1063/1.4953218
通讯作者: Huang, YW ; Wang, L (reprint author), Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China. ; Huang, YW (reprint author), Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Peoples R China.
文章类型: 期刊论文
英文摘要: We report a unique phase transition in compressed exposed curved surface nano-TiO2 with high photocatalytic activity using in situ synchrotron X-ray diffraction and Raman Spectroscopy. High-pressure studies indicate that the anatase phase starts to transform into baddeleyite phase upon compression at 19.4 GPa, and completely transforms into the baddeleyite phase above 24.6 GPa. Upon decompression, the baddeleyite phase was maintained until the pressure was released to 6.4 GPa and then transformed into the alpha-PbO2 phase at 2.7 GPa. Together with the results of high-resolution transmission electron microscopy and the pressure-volume relationship, this phase transition's characteristics during the compression-decompression cycle demonstrate that the truncated biconic morphology possessed excellent stability. This study may provide an insight to the mechanisms of stability for high photocatalytic activity of nano-TiO2. Published by AIP Publishing.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000378923100057
ISSN号: 0021-8979
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26606
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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