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

Brook, LA; Evans, P; Foster, HA; Pemble, ME; Steele, A; Sheel, DW; Yates, HM

Authors

LA Brook

P Evans

HA Foster

ME Pemble

A Steele

DW Sheel

HM Yates



Abstract

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.

Citation

Brook, L., Evans, P., Foster, H., Pemble, M., Steele, A., Sheel, D., & Yates, H. (2007). Highly bioactive silver and silver/titania composite films grown by chemical vapour deposition. Journal of Photochemistry and Photobiology A: Chemistry, 187(1), 53-63. https://doi.org/10.1016/j.jphotochem.2006.09.014

Journal Article Type Article
Publication Date Mar 5, 2007
Deposit Date Aug 7, 2007
Publicly Available Date Aug 7, 2007
Journal Journal of Photochemistry and Photobiology A: Chemistry
Print ISSN 1010-6030
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 187
Issue 1
Pages 53-63
DOI https://doi.org/10.1016/j.jphotochem.2006.09.014
Keywords CVD, chemical vapour deposition, FACVD, flame assisted CVD, bioactive thin films
Publisher URL http://dx.doi.org/10.1016/j.jphotochem.2006.09.014
Related Public URLs http://www.elsevier.com/wps/find/homepage.cws_home
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