Preparation of sensitized ZnS and its photocatalytic activity under visible light irradiation

In this paper, sensitized ZnS with visible light driven photocatlytic ability was successfully prepared. The obtained ZnS was characterized by x-ray diffraction, UV-visible diffuse reflectance spectra and Fourier transform infrared spectra. The photocatalytic property of the prepared ZnS was evaluated by decomposing methyl orange (MO). These sensitized ZnS powders with a proper molar ratio showed higher photocatalytic activity than TiO2(P25) under visible light (lambda > 420 nm) irradiation. A possible explanation for the visible light activity of the prepared ZnS was proposed.