N-doped TiO2 nanoparticles as a photocatalyst for photocatalytic oxidative desulfurization
Volume Title: 1
Chemical Engineering Department, Faculty of Engineering, University of Zanjan, Zanjan, Iran
N-doped TiO2 nanoparticles were synthesized via an ultrasonic assisted impregnation method using ammonium nitrate as nitrogen source. The prepared sample was characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), UV–vis diffuse reflectance spectroscopy (UV–vis DRS). N doping caused narrowing the band gap of the TiO2 and a red shift in the absorption edge was observed toward visible light. Photocatalytic oxidative desulfurization of dibenzothiophene (DBT) in model fuel under visible light irradiation and air bubbling was investigated using the N-doped TiO2 nanoparticles as photocatalyst. N-TiO2 nanoparticles exhibited satisfactory photocatalytic activity for DBT oxidation under visible light illumination which can be attributed to the successful doping on nitrogen in the TiO2 framework.