High pressure synthesis of amorphous TiO2 nanotubes
Li, QJ; Liu, R; Wang, TY; Xu, K; Dong, Q; Liu, B; Liu, J; Liu, BB; Liu J(刘景)
Source PublicationAIP ADVANCES
AbstractAmorphous TiO2 nanotubes with diameters of 8-10 nm and length of several nanometers were synthesized by high pressure treatment of anatase TiO2 nanotubes. The structural phase transitions of anatase TiO2 nanotubes were investigated by using in-situ high-pressure synchrotron X-ray diffraction (XRD) method. The starting anatase structure is stable up to similar to 20GPa, and transforms into a high-density amorphous (HDA) form at higher pressure. Pressure-modified high- to low-density transition was observed in the amorphous form upon decompression. The pressure-induced amorphization and polyamorphism are in good agreement with the previous results in ultrafine TiO2 nanoparticles and nanoribbons. The relationship between the LDA form and alpha-PbO2 phase was revealed by high-resolution transmission electron microscopy (HRTEM) study. In addition, the bulk modulus (B-0 = 158 GPa) of the anatase TiO2 nanotubes is smaller than those of the corresponding bulks and nanoparticles (180-240 GPa). We suggest that the unique open-ended nanotube morphology and nanosize play important roles in the high pressure phase transition of TiO2 nanotubes. (C) 2015 Author(s).
Subject AreaScience & Technology - Other Topics; Materials Science; Physics
Indexed BySCI ; ADS ; EI
WOS Research AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS SubjectScience & Technology - Other Topics ; Materials Science ; Physics
WOS IDWOS:000362562100035
ADS Bibcode2015AIPA....5i7128L
ADS URLhttps://ui.adsabs.harvard.edu/abs/2015AIPA....5i7128L
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2015AIPA....5i7128L/citations
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Cited Times:6 [ADS]
Document Type期刊论文
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GB/T 7714
Li, QJ,Liu, R,Wang, TY,et al. High pressure synthesis of amorphous TiO2 nanotubes[J]. AIP ADVANCES,2015,5(9):97128.
APA Li, QJ.,Liu, R.,Wang, TY.,Xu, K.,Dong, Q.,...&刘景.(2015).High pressure synthesis of amorphous TiO2 nanotubes.AIP ADVANCES,5(9),97128.
MLA Li, QJ,et al."High pressure synthesis of amorphous TiO2 nanotubes".AIP ADVANCES 5.9(2015):97128.
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