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Photocatalytic Activity of Reactively Sputtered Titania Coatings Deposited Using a Full Face Erosion Magnetron
Coatings 2013, 3(4), 194-207; doi:10.3390/coatings3040194
Article

Optimization Studies of Photocatalytic Tungsten-Doped Titania Coatings Deposited by Reactive Magnetron Co-Sputtering

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Received: 24 August 2013; in revised form: 16 October 2013 / Accepted: 21 October 2013 / Published: 25 October 2013
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Abstract: In this article we investigate the structural and photocatalytic properties of W-doped titanium dioxide coatings. TiO2-W thin films were deposited onto glass slides by reactive magnetron co-sputtering. The properties of the films were analyzed using such techniques as XRD, Raman spectroscopy, EDX, TEM, and surface profilometry. The photocatalytic properties of the coatings were assessed using the methylene blue (MB) degradation test under UV and fluorescent light sources. The methylene blue decomposition experiments showed that, at the optimum dopant concentration of tungsten, the photocatalytic activity can be improved by a factor of 6, compared to undoped titania. For the coatings discussed within this work, the optimum dopant concentration was determined to be 5.89 at.% of W. The results indicated that tungsten doping at this level extends the lifetime of the photogenerated charge carriers and significantly increases the photocatalyst surface area.
Keywords: titanium dioxide; photocatalytic coatings; doping; methylene blue; magnetron sputtering titanium dioxide; photocatalytic coatings; doping; methylene blue; magnetron sputtering
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.

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MDPI and ACS Style

Ratova, M.; West, G.T.; Kelly, P.J. Optimization Studies of Photocatalytic Tungsten-Doped Titania Coatings Deposited by Reactive Magnetron Co-Sputtering. Coatings 2013, 3, 194-207.

AMA Style

Ratova M, West GT, Kelly PJ. Optimization Studies of Photocatalytic Tungsten-Doped Titania Coatings Deposited by Reactive Magnetron Co-Sputtering. Coatings. 2013; 3(4):194-207.

Chicago/Turabian Style

Ratova, Marina; West, Glen T.; Kelly, Peter J. 2013. "Optimization Studies of Photocatalytic Tungsten-Doped Titania Coatings Deposited by Reactive Magnetron Co-Sputtering." Coatings 3, no. 4: 194-207.


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