Thermo-Raman studies on anatase and rutile

✍ Scribed by Hua Chang; Pei Jane Huang

• Book ID: 101246142
• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 409 KB
• Volume: 29
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/(sici)1097-4555(199802)29:2<97::aid-jrs198>3.0.co;2-e

✦ Synopsis

One application of Raman spectroscopy is in the identiÐcation 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 in a thermal process with heating, sintering and cooling. The variations in the Raman spectra indicated the TiO 2 transformation of xerogel Ðrst to amorphous then to anatase and Ðnally to rutile. The intensities of the TiO 2 , 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.