CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Size- and morphology-dependent structural transformations in anatase TiO2 nanowires under high pressures
Dong, ZH; Song, Y
2015
Source PublicationCANADIAN JOURNAL OF CHEMISTRY
Volume93Issue:2Pages:165—172
Subtype期刊文献
AbstractTitanium dioxide (TiO2) nanowires with two different dimensions (i.e., < 100 nm and similar to 200 nm in diameter) were synthesized and studied under high pressure up to 37 GPa by Raman spectroscopy and synchrotron X-ray diffraction. Direct anatase to baddeleyite phase transitions were observed in both samples upon compression, but with different onset pressures. The observed phase transitions are in contrast to bulk TiO2, where the anatase phase transforms to alpha-PbO2 phase and then the baddeleyite phase. Compressibility of the anatase and baddeleyite phases was found different than both nanocrystals and the corresponding bulk materials. Our comparative study demonstrated not only that the morphology of TiO2 nanowire substantially influences the high pressure behaviors, but dimensions play a determining role in terms of transformation pressures, phase stability regions, and compressibility.
KeywordX-ray-diffraction Phase-transitions Titanium-dioxide Induced Amorphization Raman-spectrum Nanocrystals Nanofibers Titanate Rutile Gpa
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24569
Collection中科院上海应用物理研究所2011-2020年
Recommended Citation
GB/T 7714
Dong, ZH,Song, Y. Size- and morphology-dependent structural transformations in anatase TiO2 nanowires under high pressures[J]. CANADIAN JOURNAL OF CHEMISTRY,2015,93(2):165—172.
APA Dong, ZH,&Song, Y.(2015).Size- and morphology-dependent structural transformations in anatase TiO2 nanowires under high pressures.CANADIAN JOURNAL OF CHEMISTRY,93(2),165—172.
MLA Dong, ZH,et al."Size- and morphology-dependent structural transformations in anatase TiO2 nanowires under high pressures".CANADIAN JOURNAL OF CHEMISTRY 93.2(2015):165—172.
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