期刊
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
卷 49, 期 3, 页码 311-319出版社
SPRINGER
DOI: 10.1007/s10971-008-1872-3
关键词
Nanostructures; Sol-gel synthesis; X-ray diffraction; Raman spectroscopy
资金
- Serbian Ministry of Science [141047, OPSA-026283]
- AC FP6 programme and SASA [F-134]
TiO2 nanopowders were produced by sol-gel technique under different synthesis conditions. XRD results have shown that obtained nanopowders are in anatase phase, with the presence of a small amount of highly disordered brookite phase, whereas nanocrystallite size and amount of brookite slightly depend on sol-gel synthesis conditions. Raman measurements confirm these results. The analyses of the shift and width of the most intensive anatase E (g) Raman mode by phonon confinement model suggest that anatase crystallite size should be in the range between 11 and 15 nm, what is in excellent correlation with XRD results. Obtained results have shown that Raman spectroscopy is a highly sensitive method for the estimation of anatase crystallite size as well as brookite content in TiO2 nanopowders synthesized by variable sol-gel synthesis conditions.
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