Pressure-induced phase transitions of exposed curved surface nano-TiO2 with high photocatalytic activity
Huang, YW; Chen, FJ; Li, X; Yuan, Y; Dong, HN; Samanta, S; Yu, ZH; Rahman, S; Zhang, J; Yang, K; Yan, S; Wang, L; 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.
2016
发表期刊JOURNAL OF APPLIED PHYSICS
ISSN0021-8979
卷号119期号:21页码:-
文章类型期刊论文
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.
DOI10.1063/1.4953218
收录类别SCI
语种英语
WOS记录号WOS:000378923100057
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/26606
专题中科院上海应用物理研究所2011-2018年
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.
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Huang, YW,Chen, FJ,Li, X,et al. Pressure-induced phase transitions of exposed curved surface nano-TiO2 with high photocatalytic activity[J]. JOURNAL OF APPLIED PHYSICS,2016,119(21):-.
APA Huang, YW.,Chen, FJ.,Li, X.,Yuan, Y.,Dong, HN.,...&Huang, YW .(2016).Pressure-induced phase transitions of exposed curved surface nano-TiO2 with high photocatalytic activity.JOURNAL OF APPLIED PHYSICS,119(21),-.
MLA Huang, YW,et al."Pressure-induced phase transitions of exposed curved surface nano-TiO2 with high photocatalytic activity".JOURNAL OF APPLIED PHYSICS 119.21(2016):-.
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