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Thermo‐Raman studies on anatase and rutile
Author(s) -
Chang Hua,
Huang Pei Jane
Publication year - 1998
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/(sici)1097-4555(199802)29:2<97::aid-jrs198>3.0.co;2-e
Subject(s) - anatase , raman spectroscopy , rutile , amorphous solid , materials science , analytical chemistry (journal) , sintering , chemical engineering , mineralogy , chemistry , optics , crystallography , metallurgy , photocatalysis , organic chemistry , physics , engineering , catalysis
One application of Raman spectroscopy is in the identification of the structure and the monitoring of the transformation of a sample in a thermal process. In this work, Raman spectra were taken continuously from xerogel TiO 2 in a thermal process with heating, sintering and cooling. The variations in the Raman spectra indicated the transformation of xerogel first to amorphous TiO 2 , then to anatase and finally to rutile. The intensities of the characteristic Raman bands of anatase and rutile were studied by thermo‐Raman spectroscopy as a function of temperature, and they were found to vary considerably. The intensities for both anatase and rutile became weak at high temperatures and recovered during the cooling period. © 1998 John Wiley & Sons, Ltd.