n-doped tio2 nanoparticles as a photocatalyst for photocatalytic oxidative desulfurization

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#