This article is part of a special section on the CVD of TiO2 and Doped TiO2 Films.
The Effect of Solvent on the Phase of Titanium Dioxide Deposited by Aerosol-assisted CVD†
Article first published online: 8 MAY 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Chemical Vapor Deposition
Volume 18, Issue 4-6, pages 126–132, June 2012
How to Cite
Edusi, C., Sankar, G. and Parkin, I. P. (2012), The Effect of Solvent on the Phase of Titanium Dioxide Deposited by Aerosol-assisted CVD. Chem. Vap. Deposition, 18: 126–132. doi: 10.1002/cvde.201106961
- Issue published online: 6 JUN 2012
- Article first published online: 8 MAY 2012
- Manuscript Revised: 7 DEC 2011
- Manuscript Received: 31 OCT 2011
- Solvent effects;
- Titanium dioxide;
- Water contact angles
Titanium (IV) isopropoxide (TTIP) in methanol, ethanol, hexane, dichloromethane, and isopropanol solvents is used to deposit titanium dioxide thin films on glass and steel substrates at 550 °C using aerosol-assisted (AA)CVD. X-ray diffraction (XRD), and Raman spectra of the as-deposited films show that using methanol as the carrier solvent produces exclusively rutile films on steel, and predominantly rutile on glass substrates, while the use of the other solvents produces exclusively anatase phase on the steel under the same conditions. TiO2 is also deposited by AACVD from a mixture of ethanol and methanol solvents. As little as 15% of methanol in ethanol produces rutile as the predominant phase. Using a dye-ink test, the titanium dioxide thin films produced with ethanol are shown to be more active photocatalysts than films produced with methanol. All the films show photo-induced superhydrophilicity but, surprisingly, films stored in the dark have a water contact angle above 100°.