Print version ISSN 0100-4042
MORO, Celso Camilo; LANSARIN, Marla Azário and BAGNARA, Mônica. Nitrogen-doped TiO2 nanotubes: comparison of photocatalytic activities of materials obtained using different techniques. Quím. Nova [online]. 2012, vol.35, n.8, pp. 1560-1565. ISSN 0100-4042. http://dx.doi.org/10.1590/S0100-40422012000800013.
TiO2 nanotubes were synthesized by hydrothermal method and doped with three nitrogen compounds to enhance photocatalytic activity under visible light. Catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), diffuse reflectance spectroscopy (DRS) and specific surface area and pore volume determined by BET and BJH methods, respectively. Photocatalytic activity was evaluated by photodegradation of rhodamine B under visible and UV radiations. Results showed doped-nanotubes were more efficient under visible light. The best photocatalytic activity was for sample NTT-7-600/NH3I, being 30% higher than the non-doped sample.
Keywords : titania nanotubos; nitrogen-doped; photocatalysis.