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Molecules 2014, 19(10), 16327-16348; doi:10.3390/molecules191016327

Structural Formation and Photocatalytic Activity of Magnetron Sputtered Titania and Doped-Titania Coatings

1
Surface Engineering Group, Dalton Research Institute, Manchester Metropolitan University, Manchester M1 5GD, UK
2
School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK
3
School of Healthcare Science, Manchester Metropolitan University, Manchester M1 5GD, UK
*
Author to whom correspondence should be addressed.
Received: 27 August 2014 / Revised: 25 September 2014 / Accepted: 2 October 2014 / Published: 13 October 2014
(This article belongs to the Special Issue Photocatalysis)
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Abstract

Titania and doped-titania coatings can be deposited by a wide range of techniques; this paper will concentrate on magnetron sputtering techniques, including “conventional” reactive co-sputtering from multiple metal targets and the recently introduced high power impulse magnetron sputtering (HiPIMS). The latter has been shown to deliver a relatively low thermal flux to the substrate, whilst still allowing the direct deposition of crystalline titania coatings and, therefore, offers the potential to deposit photocatalytically active titania coatings directly onto thermally sensitive substrates. The deposition of coatings via these techniques will be discussed, as will the characterisation of the coatings by XRD, SEM, EDX, optical spectroscopy, etc. The assessment of photocatalytic activity and photoactivity through the decomposition of an organic dye (methylene blue), the inactivation of E. coli microorganisms and the measurement of water contact angles will be described. The impact of different deposition technologies, doping and co-doping strategies on coating structure and activity will be also considered. View Full-Text
Keywords: titanium dioxide; photocatalytic coatings; magnetron sputtering; doping; methylene blue; HiPIMS; antimicrobial activity titanium dioxide; photocatalytic coatings; magnetron sputtering; doping; methylene blue; HiPIMS; antimicrobial activity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kelly, P.J.; West, G.T.; Ratova, M.; Fisher, L.; Ostovarpour, S.; Verran, J. Structural Formation and Photocatalytic Activity of Magnetron Sputtered Titania and Doped-Titania Coatings. Molecules 2014, 19, 16327-16348.

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