Patent ID: 10807072

Abstract:
The present invention disclosed preparation method of a visible-light-driven CC@SnS2/SnO2 composite catalyst, and application thereof, comprising the following steps: preparing CC@SnS2 composite material in a solvent by using SnCl4.5H2O and C2H5NS as raw materials and carbon fiber cloth as a supporting material; calcining said CC@SnS2 composite material to obtain the visible-light-driven CC@SnS2/SnO2 composite catalyst. The present invention overcomes defects of the traditional methods of treating chromium-containing wastewater, including chemical precipitation, adsorption, ion exchange resin and electrolysis, and the photocatalytic technology can make full use of solar light source or artificial light source without adding adsorbent or reducing agent. In this case, the use of semiconductor photocatalyst to convert hexavalent chromium in chromium wastewater into less toxic and easily precipitated trivalent chromium greatly reduces the cost and energy consumption.