A transition metal selenide catalyst based on cobalt squarate-based MOF and a preparation method thereof

The cobalt squaric acid-based MOF transition metal selenide catalyst prepared by anion exchange method solves the problem of insufficient exposure of active sites and achieves high-efficiency electrochemical activity of the catalyst.

CN117643920BActive Publication Date: 2026-05-29HANGZHOU DIANZI UNIV
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Patent Information

Application Number
CN202311533918.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-11-17
Publication Date
2026-05-29
Estimated Expiration
2043-11-17

AI Technical Summary

Technical Problem

In existing preparation methods, the active sites of transition metal selenide catalysts are difficult to fully expose, which affects their catalytic activity.

Method used

Transition metal selenide catalysts based on cobalt square acid MOFs were prepared at room temperature using anion exchange method, forming a stacked nanosheet structure with a dice-shaped hollow cobalt square cage as the framework, thereby increasing the interfacial contact area to expose active sites.

Benefits of technology

The electrochemical activity of the catalyst was improved by maintaining the stability of the catalyst structure and increasing the interfacial contact area, thereby increasing the efficiency of the electrochemical reaction.

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Abstract

The application discloses a preparation method of a transition metal selenide catalyst based on a Co-based MOF of a square acid. The Co-based MOF of the square acid is a dice-shaped square Co nanocage, and the Co-based MOF of the square acid is stable in thermodynamic properties and chemical properties. Then, the transition metal selenide catalyst is prepared by using selenium (Se) powder as a Se source and through an anion exchange method. The prepared transition metal selenide (CoSe2) has a large interface contact area, which is beneficial to exposing more surface active sites and improving catalytic activity.
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