Preparation method of one-pot in-situ constructed quinoline type cyclized porphyrin-based covalent organic framework material and application of photocatalytic hydrogen peroxide production

The one-pot synthesis of quinoline-type cycloporphyrin-based covalent organic framework materials solves the problems of high energy consumption and environmental pollution in traditional hydrogen peroxide preparation methods, achieving efficient, safe, and green hydrogen peroxide preparation.

CN122444944APending Publication Date: 2026-07-24CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (EAST CHINA)
Filing Date
2026-04-20
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing industrial methods for preparing hydrogen peroxide are energy-intensive, involve complicated steps, and generate a large amount of waste. Traditional anthraquinone processes are not environmentally friendly and make it difficult to achieve green and efficient H2O2 preparation.

Method used

A one-pot method was used to synthesize quinoline-type cycloporphyrin-based covalent organic framework materials. Imine bonds were formed through Schiff base reaction and Povarov reaction to construct a photocatalyst with high crystallinity and order. The photocatalyst was then used to directly convert O2 to H2O2 in a pure water system using solar energy.

Benefits of technology

This method enables the efficient, safe, and environmentally friendly preparation of hydrogen peroxide at ambient temperature and pressure, improving the selectivity of production and the stability of the catalyst, while reducing energy consumption and environmental burden.

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Abstract

The application belongs to the field of photocatalytic preparation of hydrogen peroxide, and relates to a quinoline type cyclized porphyrin group covalent organic framework material (TAPP-QN-COOH-COF) and a preparation method and application thereof. The material is synthesized through Schiff base reaction and Povarov reaction of tetraaminophenyl porphyrin, 2,5-dihydroxyterephthaldehyde and 4-ethynylbenzoic acid, forms a quinoline ring connected covalent organic framework, the hydroxyl on the connector forms intramolecular hydrogen bond with C=N in the quinoline ring, and the structural order and stability are enhanced. The porphyrin large pi conjugated system and the quinoline ring jointly act, drive efficient transmission of electrons in the framework, and improve the light-induced carrier separation efficiency. The obtained TAPP-QN-COOH-COF photocatalyst has good crystallinity, and the photocatalytic hydrogen peroxide production experiment shows that the hydrogen peroxide production rate of TAPP-QN-COOH-COF under ultraviolet lamp irradiation for 4 h reaches 2195.96 micromoles per gram ‑1 , and the yield uniformly increases with time, which exhibits high catalytic activity and stability. The method greenly synthesizes hydrogen peroxide under mild conditions by using light energy, and provides an efficient and safe new strategy for hydrogen peroxide production.
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