Nitrogen-doped carbon-based supported cobalt catalyst and application thereof

By preparing a nitrogen-doped carbon-based supported cobalt catalyst (Co-NC), the problems of insufficient catalytic activity, high chemical reagent consumption, and metal ion precipitation when activating persulfate by existing catalysts were solved. This resulted in the efficient and selective degradation of hydroxyl-containing aromatic pollutants at low doses, making it suitable for efficient degradation in complex environments.

CN122321917APending Publication Date: 2026-07-03ZHEJIANG UNIV OF TECH
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Patent Information

Application Number
CN202610476402.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-13
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing catalysts suffer from insufficient catalytic activity, high chemical reagent consumption, metal ion precipitation, and poor selectivity when activating persulfate, especially when treating aromatic pollutants containing hydroxyl groups.

Method used

Nitrogen-doped carbon-based supported cobalt catalyst (Co-NC) was prepared under specific conditions. By controlling the calcination temperature and metal loading, the coordination anchoring effect between cobalt and nitrogen sites was constructed to improve catalytic performance. Under near-neutral conditions, persulfate was activated to degrade hydroxyl-containing aromatic pollutants.

Benefits of technology

It achieves efficient and selective degradation of pollutants at low doses, reduces the consumption of chemical reagents and the precipitation of metal ions, lowers the preparation cost, and is suitable for efficient degradation in complex environments.

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Abstract

The invention discloses a nitrogen-doped carbon-based supported cobalt catalyst and application thereof in degradation of hydroxyl-containing aromatic pollutants, and the nitrogen-doped carbon-based supported cobalt catalyst is prepared by adopting specific conditions for the hydroxyl-containing aromatic pollutants and is used for activating peroxydisulfate and degrading a specific organic pollutant system. According to the present invention, the coordination anchoring effect between cobalt and the nitrogen-containing site is constructed, the carbon skeleton defect and electron transfer ability is improved, the metal leaching risk is reduced, the catalytic performance and the selectivity are effectively improved, and the efficient activation of the persulfate under the near-neutral condition is achieved so as to achieve the efficient degradation of the hydroxyl-containing aromatic pollutants.
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