Highly bioactive silver and silver/titania composite films grown by chemical vapour deposition

By L. Brook, P. Evans, H. Foster, Martyn E. Pemble, A. Steele, D. W. Sheel, H. M. Yates. 2007

138 citations recorded by the source corpus.

This paper describes how photocatalytically active films of TiO2, grown by thermal CVD, may be functionally and structurally modified by deposition of nano-structured silver via a novel flame assisted CVD process. The resulting composite films are shown to be highly durable, highly photocatalytically active and are also shown to possess strong antibacterial behaviour. The deposition control, arising from the described approach, offers the potential to control the film nanostructure, which is proposed to be crucial in determining the photo and bio-activity of the combined film structure, and the transparency of the composite films. Furthermore, we show that the resultant films also exhibit “self-regeneration” capability, in that they both kill bacteria present on the film surface and then photo-degrade the residues. Such a dual action significantly reducing the problems of surface deactivation due to build up of contamination. These properties are especially significant when combined with the well-known durability of CVD deposited thin films, offering new opportunities for enhanced application in areas where bioactive surface functionality is sought.

Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/6efb204e68a38d09a767775d662abbe93a6e45d6

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In Materials Chemistry

1. M. Pazouki
2. A. Steele
3. A. Hosseinnia
4. Iram B. Ditta
5. Shah Amin
6. H. Foster
7. Sajnu Varghese

In Renewable Energy, Sustainability and the Environment

1. M. Pazouki
2. A. Steele
3. A. Hosseinnia
4. Iram B. Ditta
5. Shah Amin
6. H. Foster
7. Sajnu Varghese

Citations in the corpus

• Photocatalytic disinfection using titanium dioxide: spectrum and mechanism of antimicrobial activity (2011, background): “TiO2 can be used in suspension in liquids or immobilised on surfaces (Kikuchi et al. 1997; Sunada et al. 1998; Kühn et al. 2003; Yu et al. 2003a; Brook et al. 2007; Yates et al. 2008a, b; Ditta et al. 2008).”
• Synthesis of TiO2–Ag nanocomposite with sol–gel method and investigation of its antibacterial activity against E. coli (2009, background): “Because of the nanosized silver covered by TiO2 particles, the Ag metal peaks at higher temperatures did not appear [28].”