In situ surface modification of molybdenum-doped organic-inorganic hybrid TiO_2 nanoparticles under hydrothermal conditions and treatment of pharmaceutical effluent

摘要

Molybdenum-doped TiO_2 organic-inorganic hybrid nanoparticles were synthesized under mild hydrothermal conditions by in situ surface modification using w-butylamine. This was carried out at 150℃ at autogeneous pressure over 18 h. n-Butylamine was selected as a surfactant since it produced nanoparticles of the desired size and shape. The products were characterized using powder X-ray diffraction, Fourier transform infrared spectrometry, dynamic light-scattering spectroscopy, UV-Vis spectroscopy and transmission electron microscopy. Chemical oxygen demand was estimated in order to determine the photodegradation efficiency of the molybdenum-doped TiO_2 hybrid nanoparticles in the treatment of pharmaceutical effluents. It was found that molybdenum-doped TiO_2 hybrid nanoparticles showed higher photocatalytic efficiency than untreated TiO_2 nanoparticles.