Photocatalyst for photocatalytic synthesis of ammonia and preparation method thereof

By introducing quantum dots onto a MnMOF substrate to regulate morphology and construct electron-hole conversion channels, the problem of low recombination efficiency of photogenerated electrons and holes in MOF photocatalysts was solved, achieving highly efficient photocatalytic ammonia synthesis.

CN122164506BActive Publication Date: 2026-07-21INNER MONGOLIA UNIVERSITY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INNER MONGOLIA UNIVERSITY
Filing Date
2026-05-09
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing metal-organic framework (MOF) photocatalysts have low efficiency in the recombination process of photogenerated electrons and holes, resulting in insufficient catalytic performance and difficulty in efficiently synthesizing ammonia.

Method used

MnMOF-based photocatalysts with morphologies of single-headed spherical, blocky, or multi-headed spherical shapes were used. Quantum dots were introduced as morphology modifiers and electron pumps to construct electron-hole conversion channels, promote the migration of photogenerated electrons, and enhance catalytic activity.

Benefits of technology

It significantly increased ammonia production, improved the photocatalytic ammonia synthesis performance of the catalyst, and achieved efficient, stable, and low-cost ammonia synthesis.

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Abstract

The application belongs to the technical field of photocatalytic synthesis of ammonia, and discloses a photocatalyst for photocatalytic synthesis of ammonia and a preparation method thereof. The photocatalyst for photocatalytic synthesis of ammonia has one or more of single-head flower ball shape, block shape and multi-head flower ball shape, and the base of the photocatalyst for photocatalytic synthesis of ammonia is a MnMOF base. The preparation method of the photocatalyst for photocatalytic synthesis of ammonia comprises the following steps: dissolving a metal Mn source, an aromatic polycarboxylic acid organic ligand and a surfactant in an organic solvent, and obtaining the photocatalyst for photocatalytic synthesis of ammonia through a solvothermal reaction. The photocatalyst for photocatalytic synthesis of ammonia provided by the application can significantly improve the yield of NH3 in the photocatalytic synthesis of ammonia.
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