Thiophene-doped fully conjugated covalent organic frameworks for efficient photocatalytic hydrogen peroxide production
Peer-Reviewed Publication
Updates every hour. Last Updated: 23-Dec-2025 13:11 ET (23-Dec-2025 18:11 GMT/UTC)
The research teams of Professors Yu Tang and Fengjuan Chen from Lanzhou University proposed a new mixed ligand strategy. By introducing complementary building units into covalent organic frameworks (COFs) and systematically regulating their ratios, they achieved synergistic optimization of the four key steps in the photocatalytic hydrogen peroxide synthesis, effectively breaking through the constraints between various performance indicators and significantly improving the overall catalytic efficiency. Studies have shown that the introduction of the DTTA unit significantly broadens the light absorption range and enhances the charge carrier separation ability; while the TA component improves the crystallinity and hydrophilicity of the material, thereby promoting the transport and mass transfer of photogenerated charges. At the optimal ratio, TA/DTTA-2-TMT achieved an H2O2 generation rate of 3451 μmol·g-1·h-1 in pure water, air and 100 mW·cm-2 light. This work provides new ideas for the development of high-performance H2O2 photocatalysts. The article was published as an open access research article in CCS Chemistry, the flagship journal of the Chinese Chemical Society.
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