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Related Experiment Video

Updated: Jul 16, 2026

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
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Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

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Pyrimidine-Containing Covalent Organic Framework for Photocatalytic Solar Hydrogen Peroxide Production.

Koki Yoshida1, Kazuki Terashima1, Yasuhiro Shiraishi1,2

  • 1Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, The University of Osaka, Toyonaka 560-8531, Japan.

ACS Applied Materials & Interfaces
|July 14, 2026
PubMed
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Researchers developed novel organic semiconductor photocatalysts for efficient hydrogen peroxide (H2O2) production. A specific covalent organic framework (COF) showed superior performance due to enhanced electron conductivity and hole-trapping capabilities.

Area of Science:

  • Materials Science
  • Photocatalysis
  • Green Chemistry

Background:

  • Hydrogen peroxide (H2O2) production is crucial for various chemical processes.
  • Organic semiconductor photocatalysts offer a sustainable route for solar-to-chemical energy conversion.
  • Covalent organic frameworks (COFs) provide tunable platforms for designing advanced photocatalysts.

Purpose of the Study:

  • To synthesize and evaluate a series of donor-acceptor (D-A) conjugated COFs for photocatalytic H2O2 generation.
  • To identify the structural features responsible for high photocatalytic activity.
  • To understand the mechanism of efficient H2O2 production.

Main Methods:

  • Synthesis of D-A COFs using 2,4,6-triformylphloroglucinol (Tp) as acceptor and various N-containing heterocycles as donors.
Keywords:
covalent organic frameworkhydrogen peroxidemelaminephotocatalysispyrimidine

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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

Published on: April 28, 2023

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Last Updated: Jul 16, 2026

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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

Published on: April 28, 2023

  • Photocatalytic testing for H2O2 production from water and O2.
  • Photoelectrochemical measurements and density functional theory (DFT) calculations.

    • Main Results:

    • A COF incorporating 2,4,6-triaminopyrimidine (PmA3) as the donor unit exhibited the highest H2O2 generation activity.
    • PmA3-COF demonstrated superior electron conductivity due to its multibranched triamine structure.
    • The PmA3 ring showed a high hole-trapping capability, enhancing water oxidation.

    Conclusions:

    • The PmA3-COF is a highly efficient photocatalyst for H2O2 production.
    • Enhanced electron conductivity and hole-trapping are key factors for efficient photocatalytic H2O2 synthesis.
    • This study highlights the potential of tailored COFs for sustainable chemical production.