Low‐Temperature Nucleation of Rutile Observed by Raman Spectroscopy during Crystallization of TiO2
作者:
Manuel Ocaña,
Jose V. Garcia‐Ramos,
Carlos J. Serna,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 7
页码: 2010-2012
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb07237.x
出版商: Blackwell Publishing Ltd
关键词: titania;anatase;rutile;crystallization;Raman spectroscopy
数据来源: WILEY
摘要:
The thermal evolution of amorphous TiO2powders, consisting of spherical particles and prepared by hydrolysis of a titanium ethoxide aerosol, was studied by using Raman spectroscopy. On calcination at 350°C, the solid crystallized, giving anatase as a major phase. A small amount of rutile was also detected and attributed to small seeds localized at the particle outlayer. The nucleation of rutile at so low a temperature was ascribed to the presence of organic impurities in the powders. The transformation of anatase into rutile was clearly observed after heating at 660°
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