Abstract

The ZnWO₄ photocatalysts doped with different molar ratios of molybdenum ions have been successfully prepared by a facile and effective hydrothermal method. The photocatalytic activities of the as-prepared products were evaluated by the degradation of rhodamine B (RhB) in aqueous solution. The result showed that with the doping of molybdenum ions, the photocatalytic activity of the Mo-doped ZnWO₄ photocatalysts were greatly improved. In addition, the best photoactivity was acquired when the Mo-doping molar ratio is 0.05. The doping effects on the properties of ZnWO₄ nanoparticles such as particle size, specific surface area, band gap and the photocatalytic performance were systematically discussed.

Keywords: Doping, nanoparticles, Photocatalytic, ZnWO₄.