Micro-Raman spectroscopic characterization of nanosized TiO2 powders prepared by vapor hydrolysis

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)2602-2609
Journal / PublicationJournal of Materials Research
Volume13
Issue number9
Publication statusPublished - Sep 1998
Externally publishedYes

Abstract

Micro-Raman analysis was used to study the structure of TiO2 powders produced at low (260°C) and high (600-900°C) temperatures by vapor hydrolysis of titanium tetraisopropoxide (TTIP). Spatial inhomogeneity was discovered after the amorphous TiO2 powders produced at low temperature were calcined at 700, 800, and 900°C for 3 h. The TiO2 powders produced at high temperatures (from 600 to 900°C) were found to be spatially homogeneous and predominately anatase in structure. Small amounts of rutile and brookite are found for powders produced at 700, 800, and 900°C after calcination at 600°C for 3 h. The rutile and brookite impurities are believed to be concentrated on the surface of anatase based on a comparison of results of Raman and x-ray diffraction studies.

Citation Format(s)

Micro-Raman spectroscopic characterization of nanosized TiO2 powders prepared by vapor hydrolysis. / Zhang, Yun-Hong; Chan, Chak K.; Porter, John F.; Guo, Wei.

In: Journal of Materials Research, Vol. 13, No. 9, 09.1998, p. 2602-2609.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review