A nitrogen-sulfur co-doped mesoporous carbon catalyst, its preparation method and application

By preparing nitrogen-sulfur co-doped mesoporous carbon catalysts, the problems of low activity, poor selectivity, and insufficient stability in the electrocatalytic preparation of hydrogen peroxide were solved, achieving efficient, economical, and stable hydrogen peroxide generation.

CN121496468BActive Publication Date: 2026-06-30INNER MONGOLIA UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INNER MONGOLIA UNIVERSITY
Filing Date
2026-01-14
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing electrocatalytic hydrogen peroxide production technologies suffer from complex catalyst preparation processes, high costs, low activity, poor selectivity, and poor stability, resulting in insufficient reaction rates, low yields, and low purity. Furthermore, these catalysts are prone to deactivation under harsh conditions.

Method used

Using triblock copolymer F127 as a template agent and m-aminothiophenol as a precursor, a nitrogen-sulfur co-doped mesoporous carbon catalyst was prepared by oxidative polymerization in a mixed solvent of anhydrous ethanol and water. The catalyst was then loaded onto carbon paper for electrocatalytic hydrogen peroxide generation, and the distribution of active sites and electron transport characteristics were optimized.

Benefits of technology

It significantly improves the generation efficiency and selectivity of hydrogen peroxide, ensures high-purity products, extends the service life of the catalyst, reduces overpotential and increases current density, and achieves efficient, economical and stable electrosynthesis.

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Abstract

This invention belongs to the field of electrocatalytic materials technology, and relates to a nitrogen-sulfur co-doped mesoporous carbon catalyst, its preparation method, and its application. The catalyst is a nitrogen-sulfur co-doped carbon-based material, obtained by self-assembly and high-temperature carbonization using F127 as a template agent and m-aminothiophenol as a precursor. The catalyst possesses abundant active sites, optimized electronic structure, and mesoporous morphology, exhibiting high activity, high selectivity, and excellent stability in the electrocatalytic oxygen reduction reaction, making it suitable for efficient and environmentally friendly electrosynthesis of hydrogen peroxide.
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