Researchers at Shandong Normal University and Laoshan Laboratory designed a covalent organic framework photocatalyst that couples hydrogen peroxide photoproduction with fragrance upgrading, according to a study published in Nature Communications.
The team created the material, designated PTPD-COF1, by adjusting monomer stoichiometry using building blocks with distinct geometric symmetries. This structural adjustment disrupts local symmetry and establishes electronically differentiated microenvironments throughout the framework skeleton. In pure water tests, PTPD-COF1 generated hydrogen peroxide at a photosynthetic rate of 10.4 mmol g⁻¹ h⁻¹, surpassing the performance of its binary analogues.
Coupling the process with value-added organic transformations allowed the system to bypass the sluggish kinetics typical of water oxidation. When tested with organic alcohols, the framework generated hydrogen peroxide at rates of 36.1 mmol g⁻¹ h⁻¹ using cinnamyl alcohol, 53.2 mmol g⁻¹ h⁻¹ using anisyl alcohol, and 21.6 mmol g⁻¹ h⁻¹ using o-anisyl alcohol. The system achieved near-quantitative, chemoselective conversion of each alcohol into its corresponding fragrance compound.
Theoretical analysis revealed that the altered electronic environment increases local dipole moments and decreases carrier effective masses. These shifts modified the activation energy barriers required for *OOH and *OH formation while assisting carbon-hydrogen bond cleavage during the catalytic cycle.
The peer-reviewed paper was submitted on March 19, 2026, accepted on July 30, 2026, and published on August 13, 2026. Lead authors Jie-Yu Yue and Zi-Shuo Xu contributed equally to the work alongside Yan Guo, Jing-Xian Luo, Peng Yang, and Bo Tang. Suzhou Deyo Bot Advanced Materials Co., Ltd. assisted with material characterization, with project funding provided by the National Natural Science Foundation of China and the Natural Science Foundation of Shandong Province.
