Preparation method and application of hydrogen peroxide-ozone bifunctional electrocatalyst

By preparing a niobium-lanthanum bimetallic oxide catalyst, the competition between the cathode oxygen reduction and the anodic water electrolysis ozone reaction was solved, achieving efficient generation of hydrogen peroxide and ozone and antibacterial effects, which is suitable for water pollution treatment and antibacterial applications.

CN118792683BActive Publication Date: 2026-06-02ZHEJIANG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV OF TECH
Filing Date
2024-06-11
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In existing technologies, the reactions of hydrogen peroxide production by cathode oxygen reduction and ozone production by anodic water electrolysis are competing reactions, which makes the preparation and selection of bifunctional catalysts challenging, and the application potential of existing catalysts in the field of antibacterial applications has not been fully realized.

Method used

A micelle-like catalyst was prepared by solvothermal method using niobium-lanthanum bimetallic oxide as the catalyst. Niobium and lanthanum were used as active centers for oxygen reduction and water oxidation reactions, respectively. Urea was used as a precipitant and polyethylene glycol as a surfactant to promote the morphology and electron transfer of the material.

Benefits of technology

It achieves efficient generation of hydrogen peroxide and ozone, inhibits bacterial growth, and has good oxidizing activity and antibacterial effect, making it suitable for water pollution treatment and antibacterial applications.

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Abstract

The application provides a preparation method of a hydrogen peroxide-ozone bifunctional electrocatalyst and application thereof, and the preparation method of the catalyst is as follows: carrying out a solvothermal reaction on niobium salt, lanthanum salt, urea, polyethylene glycol and a lower alcohol solvent, and then carrying out high-temperature calcination under an inert atmosphere; the formed new substance, niobium-lanthanum bimetallic oxide, has a micellar ball shape, has a larger specific surface area and is beneficial to mass transfer and electron transfer, and niobium and lanthanum bimetals respectively become active centers of oxygen reduction and water oxidation reaction, so that the catalyst has the functions of cathode oxygen reduction for preparing hydrogen peroxide and anode electrolysis of water for preparing ozone. Meanwhile, the combined application of hydrogen peroxide and ozone to escherichia coli has obvious sterilization and killing effects. The preparation method is simple, the obtained catalyst has excellent hydrogen peroxide and ozone bifunctional activity, and has a wide application prospect in the fields of bacteriostasis and water pollution treatment.
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Citation Information

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