Photocatalytic Activity of Titania Nanotube Coatings Enriched With Nanohydroxyapatite
Journal Title: Biomedical Journal of Scientific & Technical Research (BJSTR) - Year 2019, Vol 15, Issue 3
Abstract
Photocatalytic activity of titania nanotube coatings (TNT) enriched with nanohydroxyapatite (HA) has been studied on the basis of UV-induced degradation of methylene blue (water-soluble pollutant pattern). The impact of the TNT/HA composites morphology on their photocatalytic properties has been determined. The results of my works proved that in all studied TNT/HA samples hydroxyapatite increased the photocatalytic activity of titania nanoporous coatings. Obtained results pointed out the synergistic activity of HA nanocrystals deposited on the surface of titania nanotubular systems.Hydroxyapatite (HA) has the similar chemical composition as bone tissues mineral phase and therefore it attracts the interest of the scientific community in the medicine, material science, tissue engineering and implantology [1-4]. In my earlier investigations I used it to enrich the nanotube coating (TNT) on implants made of titanium alloy [5]. The inserting of TiO2 inner layer between very thin HA coating and Ti6Al4V substrate, the adhesion strength increase of the coating surface was possible [5,6]. Moreover, the addition of TiO2 inner layer should prevent the corrosion of the Ti alloy substrate and lead to achieve a surface free of cracks. The use of HA in the TNT/HA system allows also on the production of materials, which have a large surface area and high adsorption ability. In this application HA plays the role of a transparent or semi-transparent material to allow UV and visible radiation to pass through it and reach the true photocatalyst, which is TiO2[7].
Authors and Affiliations
Aleksandra Radtke
Keywords
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- EP ID EP590907
- DOI 10.26717/BJSTR.2019.15.002711
- Views 144
- Downloads 0
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