Effects of calcination on the microstructures and photocatalytic properties of nanosized titanium dioxide powders prepared by vapor hydrolysis

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

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)566-572
Journal / PublicationJournal of the American Ceramic Society
Volume82
Issue number3
Publication statusPublished - 1999
Externally publishedYes

Abstract

Ultrafine titanium dioxide powders were synthesized in an aerosol reactor using vapor hydrolysis of titanium tetraisopropoxide (TTIP) at 260 °C and higher temperatures. The effect of calcination on the microstructure and the photoactivity was studied. The powders were characterized using Brunauer-Emmett-Teller (BET) surface area, X-ray diffraction, and transmission electron microscopy analyses. As the calcination temperatures were increased, the surface area decreased but the rutile-to-anatase ratio and the anatase and rutile crystallite sizes increased. Powders produced at higher temperatures were predominantly anatase and were generally photoactive.

Citation Format(s)

Effects of calcination on the microstructures and photocatalytic properties of nanosized titanium dioxide powders prepared by vapor hydrolysis. / Chan, Chak K.; Porter, John F.; Li, Yu-Guang; Guo, Wei; Chan, Chi-Ming.

In: Journal of the American Ceramic Society, Vol. 82, No. 3, 1999, p. 566-572.

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