Next Article in Journal
Previous Article in Journal
Coatings 2013, 3(4), 177-193; doi:10.3390/coatings3040177
Article

Photocatalytic Activity of Reactively Sputtered Titania Coatings Deposited Using a Full Face Erosion Magnetron

1,* , 1
, 1
, 2
 and 3
Received: 19 July 2013; in revised form: 22 September 2013 / Accepted: 14 October 2013 / Published: 25 October 2013
View Full-Text   |   Download PDF [1282 KB, uploaded 25 October 2013]   |   Browse Figures
Abstract: Titanium dioxide (titania) is widely used as a photocatalyst for its moderate band gap, high photoactivity, recyclability, nontoxicity, low cost and its significant chemical stability. The anatase phase of titania is known to show the highest photocatalytic activity, however, the presence of this phase alone is not sufficient for sustained activity. In this study TiO2 coatings were deposited onto glass substrates by mid-frequency pulsed magnetron sputtering from metallic targets in reactive mode using a Full Face Erosion (FFE) magnetron, which allows the magnetic field to be modulated during the deposition process. The as-deposited coatings were analysed by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and micro-Raman spectroscopy. Selected coatings were then annealed at temperatures in the range of 400–700 °C and re-analysed. The photocatalytic activity of the coatings was investigated through measurements of the degradation of organic dyes, such as methyl orange, under the influence of UV and fluorescent light sources. It has been demonstrated that, after annealing, the pulsed magnetron sputtering process produced photo-active surfaces and that the activity of the coatings under exposure to fluorescent lamps was some 35%–45% of that observed under exposure to UV lamps.
Keywords: full face erosion magnetrons; magnetron sputtering; metal targets; photocatalytic coatings; Raman spectroscopy; methyl orange full face erosion magnetrons; magnetron sputtering; metal targets; photocatalytic coatings; Raman spectroscopy; methyl orange
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.

Export to BibTeX |
EndNote


MDPI and ACS Style

Farahani, N.; Kelly, P.J.; West, G.; Hill, C.; Vishnyakov, V. Photocatalytic Activity of Reactively Sputtered Titania Coatings Deposited Using a Full Face Erosion Magnetron. Coatings 2013, 3, 177-193.

AMA Style

Farahani N, Kelly PJ, West G, Hill C, Vishnyakov V. Photocatalytic Activity of Reactively Sputtered Titania Coatings Deposited Using a Full Face Erosion Magnetron. Coatings. 2013; 3(4):177-193.

Chicago/Turabian Style

Farahani, Nick; Kelly, Peter J.; West, Glen; Hill, Claire; Vishnyakov, Vladimir. 2013. "Photocatalytic Activity of Reactively Sputtered Titania Coatings Deposited Using a Full Face Erosion Magnetron." Coatings 3, no. 4: 177-193.

Coatings EISSN 2079-6412 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert