Method for preparing chlorine through photoelectrocatalysis

Abstract

The invention relates to a method for preparing chlorine through photoelectrocatalysis, and belongs to the technical field of chlorine preparation. The preparation method comprises the following steps: firstly, preparing a titanium dioxide film by adopting a hydrothermal method, and then calcining in a muffle furnace to obtain conductive glass loaded with the titanium dioxide film; and then assembling the prepared conductive glass loaded with the titanium dioxide film, a reaction device and a collection device, applying bias voltage, and giving illumination to obtain the device for preparing chlorine through photoelectrocatalysis. Light energy is introduced into the reaction device for preparing chlorine, the light energy can be fully utilized, the environment-friendly production of chlorine is realized, and a semiconductor material titanium dioxide is used as a photocatalyst, so that the pollution to the environment is reduced.

Description

technical field [0001] The invention belongs to the technical field of chlorine gas preparation, and in particular relates to a method for preparing chlorine gas by photoelectric catalysis. Background technique [0002] In modern society, with the increasing consumption of fossil energy and the increasing environmental pollution, renewable and environmentally friendly energy has become a hot spot for researchers. At present, chlorine plays an important role in daily life. It can be used in the production of sodium hypochlorite and plastics in industry. It can also be used in many fields such as sewage treatment in breweries, disinfection of tap water, bactericidal insecticides, and pharmaceuticals. The current methods for preparing chlorine gas mainly include electrolysis of saturated saline and oxidation of concentrated hydrochloric acid, but these methods have disadvantages such as waste of energy, strong pollution and unsafety. Photocatalytic preparation of chlorine gas ...

AI Technical Summary

Problems solved by technology

The current methods for preparing chlorine gas mainly include electrolysis of saturated saline and oxidation of concentrated hydrochloric acid, but these methods have disadvantages such as waste of energy, strong pollution and unsafety.

Photoelectrocatalytic preparation of chlorine is a relatively novel method. The significant advantages of this method are: (1) It makes full use of solar energy, broadens the introduction of green energy such as solar energy, reduces additional energy input, and reduces the cost of producing chlorine (2) Chlorine production mode is safe and environment-friendly, raw material is cheap and easy to get, uses inorganic solution (saturated potassium chloride solution) simultaneously as electrolytic solution, avoided the potential safety hazard brought because of using concentrated hydrochloric acid as reaction solution in the traditional method, therefore It has relatively broad application prospects; (3) Introducing semiconductor materials into the experiment of solar photocatalytic production of chlorine gas, so far, there have been no related reports

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