Preparation method of sulfur-doped TiO2 film for water purification system of construction site

Abstract

The invention discloses a preparation method of a sulfur-doped TiO2 film for a water purification system of a construction site, and belongs to the technical field of water environment treatment. The preparation method comprises the steps of S1, synthesis of sol, specifically, adopting a non-sulfurized hydrocarbon surfactant self-assembled sol-gel process as a pore orientation agent, and taking sulfuric acid as a precursor for preparing sulfur and water; S2, preparation of a sulfur-doped TiO2 film, specifically, preparing the sulfur-doped TiO2 film by using borosilicate glass as a substrate; S3, measuring the characteristics of the synthesized sulfur-doped TiO2 film by adopting an X-ray diffractometer to determine the crystal structure of the synthesized sulfur-doped TiO2 film; and S4, evaluating the photocatalytic activity of MC-LR under visible light irradiation, specifically, preparing a solution in a reactor, and then adding the sulfur-doped TiO2 film. The sulfur-doped TiO2 film has the advantages of high thermal and chemical stability, relatively high photocatalytic activity, low toxicity, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of water environment treatment, in particular to a sulfur-doped TiO used in a construction site water purification system 2 Method for preparing thin films. Background technique [0002] While different membranes such as ultrafiltration and reverse osmosis can remove viruses and bacteria from drinking water, this is not their primary goal. Microbial contaminants in drinking water often occur as a result of sewage discharges, septic tank leaks, and fecal matter entering water bodies from animal feedlot runoff. To protect drinking water from these microorganisms, water providers often add disinfectants, such as chlorine or ozone, to drinking water. However, traditional disinfectants have certain limitations based on water chemistry and the type of microorganisms present. For example, the microorganism Cryptosporidium is highly resistant to traditional disinfection methods. When there are high concentration...

AI Technical Summary

Problems solved by technology

Traditional titanium dioxide particles and colloidal catalyst suspensions are difficult to separate and reuse, and are not suitable for drinking water treatment. Therefore, how to use TiO2 2 The application of photocatalyst to water treatment and its ability to remove or even inactivate microorganisms without causing by-products that may cause health risks is the biggest problem at present

Images