An oxygen vacancy-modified MnO2 / Mn3O4 heterojunction material, its preparation method and application

CN117563585BActive Publication Date: 2026-06-26SUN YAT SEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUN YAT SEN UNIV
Filing Date
2023-10-17
Publication Date
2026-06-26

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Abstract

The application belongs to the technical field of catalytic materials, and particularly relates to an oxygen vacancy modified MnO2 / Mn3O4 heterojunction material and a preparation method and application thereof. The MnO2 / Mn3O4 heterojunction material is obtained by solvothermal reaction of MnO2 as a precursor in an organic alcohol solvent. By controlling the solvothermal temperature or the solvothermal time, the in-situ grown Mn3O4 forms the MnO2 / Mn3O4 heterojunction, the disorder structure generated in the lattice transformation process from MnO2 to Mn3O4 causes more oxygen vacancies to be formed on the interface, and the concentration of Mn 3+ is improved. The obtained MnO2 / Mn3O4 heterojunction material contains rich active sites (Mn 3+ and oxygen vacancies) for ozone adsorption and dissociation, has good catalytic activity, and can efficiently catalyze the degradation of organic pollutants in water by ozone.
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