Preparation method and application of high-dispersion low-leaching zero-valent cobalt / nitrogen-doped activated carbon catalyst
By preparing a highly dispersed, low-dissolution, zero-valent cobalt/nitrogen-doped activated carbon catalyst, the problems of unstable active sites and high cobalt dissolution rate were solved, achieving synergistic catalysis of free radical and non-free radical pathways and improving the efficiency of industrial wastewater treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHONGBEI UNIV
- Filing Date
- 2026-05-20
- Publication Date
- 2026-06-19
AI Technical Summary
Existing heterogeneous catalytic ozonation catalysts suffer from problems such as unstable active sites, high cobalt dissolution rate, and single catalytic pathway, which limit their application in the treatment of recalcitrant industrial wastewater.
Using urea as the nitrogen source and cobalt nitrate hexahydrate as the metal precursor, a highly dispersed and low-dissolution zero-valent cobalt/nitrogen-doped activated carbon catalyst was prepared by a two-step calcination method. By precisely controlling the calcination temperature, the in-situ generation and stable dispersion of zero-valent cobalt were achieved, thus constructing a multi-pathway synergistic catalytic system of free radicals and non-free radicals.
It significantly improves the efficiency and stability of catalytic ozonation, achieving efficient decomposition and mineralization of phenol. The catalyst exhibits excellent stability and efficient degradation ability during multiple cycles of use.
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Figure CN122230775A_ABST