Two-dimensional mesoporous metal-organic framework catalyst and preparation method and application thereof

Two-dimensional ME-MOF catalysts were prepared by room temperature ultrasonic treatment, which solved the problems of uneven crystal growth and agglomeration during the synthesis process and achieved high efficiency electrocatalytic performance, especially showing excellent catalytic activity in oxygen evolution and hydrogen evolution reactions.

CN120174404BActive Publication Date: 2026-06-30ZHENGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU UNIV
Filing Date
2025-04-07
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing two-dimensional medium-entropy metal-organic framework materials are prone to uneven crystal growth and aggregation during synthesis, which leads to a reduction in active sites and affects electrocatalytic performance.

Method used

Two-dimensional ME-MOF catalysts were prepared by room temperature ultrasonic treatment. Organic ligands and triethylamine were added to a metal salt solution to form a homogeneous colloidal suspension, and ultrasonic treatment was performed under closed conditions to promote framework formation and avoid agglomeration caused by high-energy synthesis methods.

Benefits of technology

The prepared catalyst has a uniform plate-like structure, which improves the electron transfer process and the exposure of active sites, and exhibits excellent electrocatalytic activity and stability, even surpassing the performance of commercial RuO2 and Pt/C catalysts.

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Abstract

This invention discloses a two-dimensional medium-entropy metal-organic framework catalyst, its preparation method, and its application. It belongs to the field of energy materials technology. The method involves the following steps: Ni, Co, Fe, and Mo salts are dissolved in a mixed solution of DMF, ethanol, and water. Then, terephthalic acid and TEA are added and stirred to obtain a homogeneous colloidal suspension, which is then ultrasonically treated under sealed conditions. The product is collected by centrifugation, washed, and dried to finally obtain a two-dimensional ME-MOF catalyst prepared by room temperature ultrasonic treatment. The catalyst prepared by this invention has low raw material costs, a simple preparation process, and is environmentally friendly. The material has a plate-like structure, and due to its high specific surface area and adjustable structure, it can be used for electrocatalysis.
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