Method for producing hydrogen by photocatalytic decomposition of water

By leveraging the synergistic effect of CoFe2O4-ZnIn2S4@BC catalyst and triethanolamine, the problems of narrow light absorption range and low catalytic activity in existing photocatalytic water splitting hydrogen production technologies have been solved, achieving efficient and stable hydrogen production, which aligns with the concept of green and sustainable development.

CN122355233APending Publication Date: 2026-07-10辽宁省生态环境保护科技中心
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Patent Information

Application Number
CN202610484779.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-14
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing photocatalytic water splitting technology for hydrogen production suffers from problems such as narrow light absorption range, rapid recombination of photogenerated electron-hole pairs, low catalytic activity, harsh reaction conditions, low hydrogen production efficiency, and poor catalyst cycle stability, making it difficult to meet the needs of industrial applications.

Method used

Using CoFe2O4-ZnIn2S4@BC catalyst, spinel-structured cobalt ferrite nanoparticles and flake-like zinc indium sulfide nanoparticles are supported on biochar to form a pn heterojunction, and triethanolamine is added as an electron sacrificial agent to perform photocatalytic water splitting to produce hydrogen using visible light.

Benefits of technology

It significantly improves the separation efficiency of photogenerated carriers, broadens the visible light absorption range, enhances the photocatalytic hydrogen production activity, material stability and cycle durability, and achieves efficient and stable hydrogen production performance, which is in line with the concept of green and sustainable development.

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Abstract

The invention relates to the technical field of hydrogen energy, in particular to a hydrogen production method by photocatalytic water splitting. The problems that an existing photocatalytic hydrogen production method is harsh in reaction condition, low in hydrogen production efficiency, poor in catalyst circulation stability and the like are solved. Water is used as a reaction medium, a catalyst and an electron sacrificial agent are added, and hydrogen production through water decomposition is achieved under visible light irradiation; the catalyst is prepared by taking cobalt ferrite, zinc indium sulfide and biochar as raw materials, and the electron sacrificial agent is triethanolamine. According to the method, separation and transmission of photon-generated carriers are enhanced through the synergistic effect of the catalyst and the electronic sacrificial agent, the hydrogen production efficiency is high, the stability is high, the process is simple and convenient, the cost is controllable, meanwhile, hydrogen energy serves as zero-carbon energy and can replace fossil fuel, pollution and carbon are reduced from the source, the dual-carbon target is assisted, an efficient scheme is provided for large-scale preparation of hydrogen energy, and the method is suitable for industrial production. The industrial application value and the ecological environmental protection value are realized.
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