Issue 46, 2009
From the journal:

Journal of Materials Chemistry

White light induced photocatalytic activity of sulfur-doped TiO2 thin films and their potential for antibacterial application

Charles W. Dunnill,a   Zoie A. Aiken,b   Andreas Kafizas,a   Jonathan Pratten,b   Michael Wilson,b   David J. Morganc  and  Ivan P. Parkin*a  

* Corresponding authors

a Centre for Materials Research, Department of Chemistry, University College London, 20 Gordon Street, London, UK
E-mail: I.P.Parkin@ucl.ac.uk

b UCL Eastman Dental Institute, University College London, 256 Gray's Inn Road, London, UK

c Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, UK

Abstract

Sulfur-doped titania thin films were prepared by atmospheric pressure chemical vapour deposition (APCVD) for the first time using titanium tetrachloride, ethyl acetate and carbon disulfide. The films were compared to two industrial self-cleaning products: Activ™ and BIOCLEAN™, and shown to be superior in both photocatalysis and photo-induced superhydrophilicity, two preferential properties of effective self-cleaning coatings. X-Ray diffraction showed the films have the anatase TiO2 structure. XPS and EDX analysis shows changes in S : Ti ratio with preparative conditions indicating that sulfur has indeed been incorporated into the lattice. S-Doped TiO2 films were found to be effective agents for killing the bacterium Escherichia coli using light sources commonly found in UK hospitals.

Graphical abstract: White light induced photocatalytic activity of sulfur-doped TiO2 thin films and their potential for antibacterial application

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Article information

DOI
https://doi.org/10.1039/B913793A
Article type
Paper
Submitted
10 Jul 2009
Accepted
26 Aug 2009
First published
06 Oct 2009

J. Mater. Chem., 2009,19, 8747-8754

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White light induced photocatalytic activity of sulfur-doped TiO2 thin films and their potential for antibacterial application

C. W. Dunnill, Z. A. Aiken, A. Kafizas, J. Pratten, M. Wilson, D. J. Morgan and I. P. Parkin, J. Mater. Chem., 2009, 19, 8747 DOI: 10.1039/B913793A

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