Method for preparing nitrogen and sulfur synchronous doped nanometer titanium dioxide photocatalyst

Abstract

The invention relates to a method for preparing a nitrogen and sulfur synchronous doped nanometer titanium dioxide photocatalyst. One method adopting a doping source and simultaneously preparing the N and S modified TiO2 photocatalyst has not been reported. The method comprises the following steps of: preparing a titanium source solution and a doping source solution, weighting 80 parts by volume of anhydrous alcohol, adding 20 parts of tetrabutyl titanate into the anhydrous alcohol, and stirring to obtain the titanium source solution; adding 20 parts by volume of anhydrous alcohol, 20 parts of deionized water and 4 parts of 65%-68% nitric acid into a drop funnel to form a mixing solution, adding cystine accounting for 13% of the weight of the mixing solution into the mixing solution, and uniformly shaking to obtain the doping source solution; mixing the titanium source solution with the doping source solution to form wet gel, drying in a baking oven, and placing in a muffle furnace to roast to obtain the anatase type nanometer titanium dioxide photocatalyst with different spherical particle sizes. The preparation method is used for preparing a titanium dioxide photocatalyst.

Description

Technical field: [0001] The invention relates to the preparation of a novel photocatalyst, in particular to a method for preparing a nitrogen and sulfur synchronously doped nano-titanium dioxide photocatalyst for treating organic waste water. Background technique: [0002] In recent years, the problem of environmental pollution has become increasingly serious, and semiconductor heterogeneous photocatalysis technology has gradually become a widely researched technology due to its great potential in water pollution and air pollution control. Among many semiconductor photocatalysts, TiO 2 Because of its non-toxic, good chemical stability, strong oxidation ability and many other advantages, it is considered to be the most suitable photocatalyst for popularization and application. However, due to the semiconductor nano-TiO 2 Higher excitation energy - it can only be excited by ultraviolet light with a shorter wavelength (λ<387nm), which makes the utilization rate of sunlight...

AI Technical Summary

Problems solved by technology

However, N and S modified TiO can be prepared simultaneously by using one doping source. 2 The preparation method of photocatalyst has not been reported yet