title: Photoinduced properties of nanocrystalline TiO2-anatase coating on Ti-based bone implants.
abstract: The paper reports on the photoinduced properties of hydrothermally treated (HT) titanium used for bone implants. The anatase coatings composed of 30-100nm anatase crystals exhibited high photocatalytic activity and good photo-induced wettability, reaching a superhydrophilic state, despite the larger crystal dimensions than the previously reported optimal ones. These properties are due to a suitable combination of surface texture, roughness, thickness, crystal morphology and particle size, which allowed the two independent photo-induced phenomena to occur simultaneously. The results on caffeine degradation by photocatalysis and the prolonged effect (up to two weeks) of photo-induced wettability in dark suggested a possible applicability of the HT anatase coatings as bacteria-repelling surfaces for body implants, in favor of a better osseointegration in vivo.
authors.affiliation: Jožef Stefan Institute, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana, Slovenia.
authors.forename: Martina
authors.initials: M
authors.lastname: Lorenzetti
authors.affiliation: Jožef Stefan Institute, Ljubljana, Slovenia.
authors.forename: Daniele
authors.initials: D
authors.lastname: Biglino
authors.affiliation: Jožef Stefan Institute, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana, Slovenia. Electronic address: sasa.novak@ijs.si.
authors.forename: Saša
authors.initials: S
authors.lastname: Novak
authors.affiliation: Jožef Stefan Institute, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana, Slovenia.
authors.forename: Spomenka
authors.initials: S
authors.lastname: Kobe
mesh_terms: D018786:Bone Substitutes / Q000737:chemistry*; D002384:Catalysis; D006801:Humans; D008027:Light; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D019736:Prostheses and Implants; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D017155:Wettability
chemical_list: D018786:Bone Substitutes; C009495:titanium dioxide; D014025:Titanium
keywords: Antibacterial effect; Hydrothermal treatment; Photo-induced wettability; Photocatalytic activity; TiO(2) nanocrystals