Visible light responding selenium-doped sulphide photocatalyst and preparation method thereof

Abstract

The invention relates to a visible light responding sulphide photocatalyst and a preparation method thereof, belonging to the field of inorganic nano photocatalytic materials. The catalyst comprises selenium-doped nano-metal sulphide semi-conductors including zinc sulphide, cadmium sulphide and bismuthous sulphide. The photocatalyst has photocatalytic activity in wider wavelength range and can treat toxic and harmful chemical substances through photodecomposition and purification under radiation of ultraviolet light, visible light or natural light.

Description

Technical field [0001] The present invention relates to a photocatalyst, in particular to a photocatalyst with visible light response. [0002] The present invention also relates to the preparation method of the above-mentioned catalyst. [0003] The present invention also relates to the use of the above-mentioned catalyst. Background technique [0004] In the 1970s, Japanese scientists Fujishima and Honda first discovered semiconductor TiO 2 It has the function of splitting water under ultraviolet light irradiation. Since then, semiconductor photocatalysis has become one of the most active interdisciplinary research fields. The use of photocatalytic degradation to eliminate organic pollutants is a new technology that has received increasing attention in recent years. Because of its huge potential in the advanced treatment of organic wastewater and environmental purification, photocatalytic degradation of organic pollutants has been People’s widespread concern, many organic compoun...

AI Technical Summary

Problems solved by technology

However, many studies have shown that many narrow-bandgap semiconductors often show instability under the irradiation of ultraviolet-visible light, that is, photoerosion phenomenon.