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Updated: Aug 30, 2026
The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance
Published on: July 4, 2017
Photocatalytic activity of rutile-anatase coupled TiO2 particles prepared by a dissolution-reprecipitation method
Tetsuro Kawahara1, Toshiaki Ozawa, Mitsunobu Iwasaki
1Technical Planning Department, Architectural Glass Division, Nippon Sheet Glass Co. Ltd., 1-11-11, Shiba, Minato-ku, Tokyo 105-8501, Japan. tetsurokawahara@mail.nsg.co.jp
Abstract:
Rutile TiO(2) particles were partly dissolved into aqueous solutions of H(2)SO(4), and the Ti(4+) ions were reprecipitated by adding NH(3) aq. Rutile-anatase coupled TiO(2) particles were prepared by heating the solid recovered after centrifugation of the suspension. The content of anatase (c(A), wt%) could be controlled arbitrarily by changing the dissolved amount of rutile. The photocatalytic activity for the gas-phase oxidation of acetaldehyde was evaluated. The first-order rate constant, k, strongly depended on both c(A) and heating temperature (T(c)), increasing with an increase in T(c) at T(c)
