CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
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(杨舸)
2012
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume2Issue:24
AbstractThe 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.
Language英语
Funding Project应物所项目组
WOS IDWOS:000308824600027
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13294
Collection中科院上海应用物理研究所2011-2020年
Recommended Citation
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).
APA Li, QJ.,Liu, R.,Liu, BB.,Wang, L.,Wang, K.,...&Yang, K.(2012).Stability and phase transition of nanoporous rutile TiO2 under high pressure.RSC ADVANCES,2(24).
MLA Li, QJ,et al."Stability and phase transition of nanoporous rutile TiO2 under high pressure".RSC ADVANCES 2.24(2012).
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