Photocatalytic activity of low temperature oxidized Ti-6Al-4V
2012 (English)In: Journal of materials science. Materials in medicine, ISSN 0957-4530, E-ISSN 1573-4838, Vol. 23, no 5, 1173-1180 p.Article in journal (Refereed) Published
Numerous advanced surface modification techniques exist to improve bone integration and antibacterial properties of titanium based implants and prostheses. A simple and straightforward method of obtaining uniform and controlled TiO2 coatings of devices with complex shapes is H2O2-oxidation and hot water aging. Based on the photoactivated bactericidal properties of TiO2, this study was aimed at optimizing the treatment to achieve high photocatalytic activity. Ti-6Al-4V samples were H2O2-oxidized and hot water aged for up to 24 and 72 h, respectively. Degradation measurements of rhodamine B during UV-A illumination of samples showed a near linear relationship between photocatalytic activity and total treatment time, and a nanoporous coating was observed by scanning electron microscopy. Grazing incidence X-ray diffraction showed a gradual decrease in crystallinity of the surface layer, suggesting that the increase in surface area rather than anatase formation was responsible for the increase in photocatalytic activity.
Place, publisher, year, edition, pages
2012. Vol. 23, no 5, 1173-1180 p.
Engineering and Technology Nano Technology
Research subject Engineering Science with specialization in Nanotechnology and Functional Materials; Engineering Science with specialization in Materials Science
IdentifiersURN: urn:nbn:se:uu:diva-174919DOI: 10.1007/s10856-012-4602-xISI: 000303357600005OAI: oai:DiVA.org:uu-174919DiVA: diva2:529506