Morphology-Tuned Phase Transitions of Anatase TiO2 Nanowires under High Pressure
文献类型：期刊论文
| 作者 | Li, QJ; Cheng, BY; Yang, X; Liu, R; Liu, B; Liu, J; Chen, ZC; Zou, B; Cui, T; Liu, BB;刘景 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2013 |
| 卷号 | 117期号:16页码:8516-8521 |
| 英文摘要 | The phase transitions of one-dimensional (1D) anatase TiO2 nanowires were studied by in situ high-pressure synchrotron X-ray diffraction and Raman scattering up to 37 GPa. A direct anatase-to-baddeleyite transformation was observed at similar to 9 GPa, which is clearly different from the size-dependent phase transition behaviors for nanocrystalline TiO2. We found the higher compressibility in the c-axis compared to the a-axis for anatase nanowires that may be attributed to both the crystal structural feature and the growth direction of the nanowires. The Ti-O bonds show abnormal changes during the anatase-to-baddeleyite phase transition. This phase transition of the TiO2 nanowires shows obvious morphology-tuned behaviors. Upon decompression, the baddeleyite phase transformed into alpha-PbO2 phase. The morphology of the TiO2 nanowires shows excellent stability and TiO2 nanowires with alpha-PbO2 phase were obtained at ambient conditions through a compression-decompression cycle. These results indicate that the nanoscale quasi-1D structure of TiO2 nanowires may contribute to the high-pressure phase transitions showing unique morphology-tuned behaviors. |
| 学科主题 | Chemistry; Science & Technology - Other Topics; Materials Science |
| 收录类别 | SCI |
| WOS记录号 | WOS:000318211200067 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224310]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Li, QJ,Cheng, BY,Yang, X,et al. Morphology-Tuned Phase Transitions of Anatase TiO2 Nanowires under High Pressure[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2013,117(16):8516-8521. |
| APA | Li, QJ.,Cheng, BY.,Yang, X.,Liu, R.,Liu, B.,...&Liu, BB；刘景.(2013).Morphology-Tuned Phase Transitions of Anatase TiO2 Nanowires under High Pressure.JOURNAL OF PHYSICAL CHEMISTRY C,117(16),8516-8521. |
| MLA | Li, QJ,et al."Morphology-Tuned Phase Transitions of Anatase TiO2 Nanowires under High Pressure".JOURNAL OF PHYSICAL CHEMISTRY C 117.16(2013):8516-8521. |
入库方式： OAI收割
来源：高能物理研究所
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