TiO2 nanofibers supported on Ti sheets prepared by hydrothermal corrosion: effect of the microstructure on their photochemical and photoelectrochemical properties. Issue 115 (4th November 2015)

• Record Type: Journal Article
• Authors: Chaguetmi, Samiha; Achour, Slimane; Mouton, Ludovic; Decorse, Philippe; Nowak, Sophie; Costentin, Cyrille; Mammeri, Fayna; Ammar, Souad
• Is Part Of: RSC advances. Volume 5:Issue 115(2015)
• Page Start: 95038
• Page End: 95046
• Publication Date: 2015-11-04
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra13848e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : TiO2 nanostructures were prepared by hydrothermal corrosion of Ti sheets for various heating temperatures and times. Their change from thick and short nanorods to thin and long nanowires by increasing these processing parameters led to improved photocatalytic properties. Abstract : TiO2 /Ti nanostructures were synthesized by the hydrothermal route. Based on the operating conditions, namely the heating time and temperature, the microstructure of the produced titania was successfully varied from very thick and short nanofibers to very thin and long nanowires. UV-Visible diffuse reflectance spectroscopy also evidenced a net dependency of the optical properties of the produced semiconducting films, and consequently their photocatalytic and photoelectrocatalytic activity, to their synthesis conditions. Typically, the photodegradation of methylene blue in water under UV irradiation as well as the oxidation of water without additional bias were assessed and showed different efficiencies according the type of tested film.