Ti-mof / pd-oh composite catalyst for photocatalytic decomposition of water to generate hydrogen and preparation method thereof

CN122209488APending Publication Date: 2026-06-16ANHUI UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI UNIVERSITY OF TECHNOLOGY
Filing Date
2026-03-23
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

The electron-hole pairs in existing metal-organic framework (MOF) photocatalysts are prone to recombination, resulting in low catalytic efficiency. Furthermore, the preparation process of existing composite catalysts is complex and costly, making it difficult to improve catalytic activity through economical methods.

Method used

The Ti-MOF/Pt-OH composite catalyst was prepared by loading Pt nanoparticles onto the MOF material MIL-125-NH2, utilizing the stable hydrogen bonds formed by Pt-OH to enhance the reactivity of the catalytic active center, and was prepared by a simple and mild synthesis method to ensure uniform dispersion of Pt nanoparticles.

Benefits of technology

It significantly improves the activity of photocatalytic water splitting to produce hydrogen, with a hydrogen yield of 15.5 mmol/g. The catalyst has good stability, can be reused, and retains 92.7% of its performance after four cycles. It is also low in cost and simple to operate.

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Abstract

The application discloses a Ti-MOF / Pt-OH composite catalyst for photocatalytic decomposition of water to generate hydrogen and a preparation method, and relates to the technical field of photocatalysts for water decomposition and hydrogen generation; the application comprises the following steps: after oil bath reflux reaction of chloroplatinic acid hexahydrate and sodium hydroxide, the product is acidified by hydrochloric acid to precipitate Pt-Cl nanoparticles, and then the Pt-Cl nanoparticles are dissolved in DMF to obtain a colloidal solution; the colloidal solution is mixed with metal organic framework MOF material MIL-125-NH2 in a solvent, is uniformly dispersed and is reacted, then the product is collected by centrifugation, is washed, is dried, and then the Ti-MOF / Pt-OH composite catalyst is formed by bonding under the condition of light irradiation in an aqueous solution; the preparation method is mild and simple, low in cost, controllable and easy to operate, the prepared photocatalyst is high in stability, can efficiently generate hydrogen, and can be repeatedly used.
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