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Stability and phase transition of nanoporous rutile TiO2 under high pressure
Li, QJ; Liu, R; Liu, BB; Wang, L; Wang, K; Li, DM; Zou, B; Cui, T; Liu, J; Chen, ZQ; Yang, K;刘景
2012
发表期刊RSC ADVANCES
卷号2期号:24页码:9052-9057
摘要The high-pressure behavior of nanoporous rutile TiO2 was studied at room temperature using in situ synchrotron X-ray diffraction and Raman spectroscopy. It was found that the nanoporous rutile TiO2 starts to transform to the baddeleyite phase at a pressure of 10.8 GPa. The phase transition pressure is obviously different from those of rutile nanoparticles and the bulk solid. The rutile phase transforms into the baddeleyite phase completely when the pressure reaches beyond 26.1 GPa. Upon decompression, the baddeleyite phase transforms into the alpha-PbO2 phase. The bulk modulus obtained for nanoporous rutile TiO2 is 204(4) GPa. The nanoporous structure remains structurally intact during the compression-decompression cycle and thus shows excellent stability. We suggest that these high-pressure behavior characteristics of nanoporous rutile TiO2 are due to its unique nanoporous microstructure. Our study indicates that high pressure may be a powerful tool for researching the physicochemical properties of nanoporous materials, and also provides a potential method for preparing novel high-pressure phase nanoporous materials.
学科领域Chemistry
DOI10.1039/c2ra20586f
收录类别SCI
WOS记录号WOS:000308824600027
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224315
专题多学科研究中心
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GB/T 7714
Li, QJ,Liu, R,Liu, BB,et al. Stability and phase transition of nanoporous rutile TiO2 under high pressure[J]. RSC ADVANCES,2012,2(24):9052-9057.
APA Li, QJ.,Liu, R.,Liu, BB.,Wang, L.,Wang, K.,...&Yang, K;刘景.(2012).Stability and phase transition of nanoporous rutile TiO2 under high pressure.RSC ADVANCES,2(24),9052-9057.
MLA Li, QJ,et al."Stability and phase transition of nanoporous rutile TiO2 under high pressure".RSC ADVANCES 2.24(2012):9052-9057.
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