Preparation method and application method of electrocatalysis electrode

Abstract

The invention provides a preparation method and an application method of an electrocatalysis electrode. The preparation method includes: taking titanium as a substrate, depositing Bi-SnO2-Sb2O3-CNT on the titanium substrate by means of heat deposition, and then depositing a PbO2 active surface layer on a Bi-SnO2-Sb2O3-CNT interlayer by the aid of electrodeposition to prepare a Ti / Bi-SnO2-Sb2O3-CNT / PbO2 electrocatalysis electrode. The electrocatalysis electrode is used for ultrasound electrocatalysis algae killing and microcystin degradation. The electrocatalysis electrode is taken as an anode, a stainless steel or copper sheet is taken as a cathode, microcystis aeruginosa solution added with electrolyte is subjected to electrolysis, and ultrasonic treatment is applied in the electrolytic process. The preparation method and the application method of the electrocatalysis electrode have the advantages that the electrode has more catalytic activity sites, and catalytic activity of the electrode is improved; electrical conductivity of the electrode can be improved, and energy consumption can be lowered; electrocatalytic activity is high, and service life is long; ultrasonic oxidation and electrocatalytic oxidation are combined, synergistic effect is generated, and efficiency of algae killing and microcystin degradation is highly increased.

Description

technical field [0001] The invention relates to a method for preparing an electrocatalytic electrode. The invention also relates to a method of application of the electrocatalytic electrode of the invention. Background technique [0002] With the rapid development of industrial and agricultural production and urbanization, a large amount of industrial wastewater containing nitrogen, phosphorus and other nutrients, farmland surface runoff and domestic sewage are discharged into natural water bodies. This leads to the excessive growth of algae in the water body, thus forming the phenomenon of algae bloom. The blooms that occur in most water bodies are mainly cyanobacterial blooms, among which Microcystis aeruginosa is the main one. The appearance of algae blooms will not only cause the water surface to be covered, the photosynthesis of aquatic plants will be inhibited, the dissolved oxygen in the water will be reduced, fish and shrimp will suffocate and die, and the balance ...

AI Technical Summary

Problems solved by technology

When the electrocatalytic oxidation method is used alone to degrade organic matter, the organic matter will form a polymeric film on the surface of the electrode after the electrode is oxidized and reduced, which will affect the effect of further degradation of organic matter

However, after ultrasound is combined with electrocatalytic oxidation, the cavitation effect of ultrasound itself will degrade organic matter, ultrasound will also accelerate the mass transfer rate of the medium, making it difficult to form a polymeric film, and the electrode surface is constantly updated or the reaction center is exposed, making the electrochemical reaction continue.