Pressure induced structural transformations of anatase TiO2 nanotubes probed by Raman spectroscopy and synchrotron X-ray diffraction
文献类型：期刊论文
| 作者 | Dong, ZH; Xiao, FP; Zhao, AK; Liu, LJ; Sham, TK; Song, Y |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:80页码:- |
| ISSN号 | 2046-2069 |
| 通讯作者 | Song, Y (reprint author), Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada. ; Song, Y (reprint author), Univ Western Ontario, Soochow Univ, Synchrotron Radiat Res Ctr, London, ON N6A 5B7, Canada. |
| 英文摘要 | Anatase titanium dioxide (TiO2) nanotubes synthesized via electrochemical anodization were studied under high pressure up to 31 GPa. The structural transformations were characterized by in situ Raman spectroscopy and synchrotron X-ray diffraction. Raman measurements suggest that anatase TiO2 nanotubes transform to an amorphous phase upon compression to 17.7 GPa and remain mostly amorphous upon recovery but with minor alpha-PbO2 and anatase phases as a mixture. In contrast, direct anatase to baddeleyite phase transition was unambiguously observed at similar to 14 GPa in the diffraction measurements. Structural refinement allows the quantitative analysis of the transition sequence and reveals that the recovered phase is mostly crystalline alpha-PbO2. This discrepancy can be attributed to the special surface and interfacial structure associated with the tube morphology. Moreover, the compression behavior such as the compressibility of both anatase and baddeleyite phases of TiO2 nanotubes was examined in parallel with other nanostructured TiO2 materials. Our analysis shows that morphology plays a more prominent role than size in affecting the high pressure behaviors of 1D TiO2 nanomaterials compared to nanoparticles, and that the interplay of multiple factors such as morphology, size, interfacial structures, as well as lattice defects can substantially influence the phase stability and thus the transformation sequence. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000382157700009 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/26604]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Dong, ZH,Xiao, FP,Zhao, AK,et al. Pressure induced structural transformations of anatase TiO2 nanotubes probed by Raman spectroscopy and synchrotron X-ray diffraction[J]. RSC ADVANCES,2016,6(80):-. |
| APA | Dong, ZH,Xiao, FP,Zhao, AK,Liu, LJ,Sham, TK,&Song, Y.(2016).Pressure induced structural transformations of anatase TiO2 nanotubes probed by Raman spectroscopy and synchrotron X-ray diffraction.RSC ADVANCES,6(80),-. |
| MLA | Dong, ZH,et al."Pressure induced structural transformations of anatase TiO2 nanotubes probed by Raman spectroscopy and synchrotron X-ray diffraction".RSC ADVANCES 6.80(2016):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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