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 photogenerated electron recombination in MOF photocatalysts was solved, achieving a highly efficient photocatalytic ammonia synthesis reaction with a significant increase in yield.

CN122164506APending Publication Date: 2026-06-09INNER MONGOLIA UNIVERSITY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INNER MONGOLIA UNIVERSITY
Filing Date
2026-05-09
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing metal-organic framework (MOF) photocatalysts suffer from a sharp decrease in the number of effective electrons during the rapid recombination of photogenerated electrons and holes, resulting in low catalytic efficiency and making it difficult to meet the requirements for efficient photocatalytic nitrogen fixation.

Method used

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

Benefits of technology

It significantly increased the NH3 yield in photocatalytic ammonia synthesis, improved the performance of the catalyst, and achieved a highly efficient photocatalytic ammonia synthesis reaction. It is simple, stable, low-cost, and environmentally friendly.

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Abstract

This invention belongs to the field of photocatalytic ammonia synthesis technology, and discloses a photocatalyst for photocatalytic ammonia synthesis and its preparation method. The photocatalyst has one or more morphologies, including single-headed spherical, blocky, and multi-headed spherical shapes, and its substrate is a MnMOF substrate. The preparation method of the photocatalyst for photocatalytic ammonia synthesis includes dissolving a metal Mn source, an aromatic polycarboxylic acid organic ligand, and a surfactant in an organic solvent, followed by a solvothermal reaction to obtain the photocatalyst for photocatalytic ammonia synthesis. The photocatalyst for photocatalytic ammonia synthesis of this invention significantly improves the yield of NH3 in the photocatalytic ammonia synthesis reaction.
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Citation Information

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