Heterogenization of a dinuclear cobalt molecular catalyst in porous polymers via covalent strategy for CO 2 photoreduction with record CO production efficiency

Open AccessCCS ChemistryRESEARCH ARTICLES23 Aug 2024Heterogenization of a dinuclear cobalt molecular catalyst in porous polymers via covalent strategy for CO2 photoreduction with record CO production efficiency Yun-Nan Gong, Si-Ya Lv, Hao-Yu Yang, Wen-Jie Shi, Jing-Jing Wang, Long Jiang, Di-Chang Zhong and Tong-Bu Lu Yun-Nan Gong , Si-Ya Lv , Hao-Yu Yang , Wen-Jie Shi , Jing-Jing Wang , Long Jiang , Di-Chang Zhong and Tong-Bu Lu Cite this: CCS Chemistry. 2024;0:1–25https://doi.org/10.31635/ccschem.024.202404675 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail Photocatalytic CO2 reduction into chemical fuels is a promising route for alleviating the energy crisis and environmental issues. However, the reported catalysts still exhibit low catalytic efficiencies, which hinders the development of this important reaction. Herein, we report the heterogenization of a dinuclear cobalt molecular catalyst into two porous polymers ( Co2-P1 and Co2-P2) using a covalent strategy for photocatalytic CO2 reduction. As a result, Co2-P1 with phenyl as the linker exhibited high catalytic performance for photochemical CO2-to-CO conversion with a CO production rate of 568.8 mmol g−1 h−1 and turnover frequency (TOF) of 11.6 min−1 (CO selectivity, 95.2%). More impressively, by extending the phenyl to biphenyl linker, the resulting Co2-P2 shows obviously enhanced photocatalytic efficiency for CO2 reduction to CO, with the record CO production rate of 1063.0 mmol g−1 h−1 and TOF of 23.6 min−1 (CO selectivity, 94.9%) under a laboratory light source. Furthermore, Co2-P2 also shows an outstanding catalytic activity for photocatalytic CO2 reduction under natural sunlight, with a CO production rate of 544.1 mmol g−1 h−1 and TOF of 12.1 min−1 (CO selectivity, 97.2%). Systematic studies demonstrated that fast electron transfer from the photosensitizer to the catalyst greatly contributes to the superior catalytic activity of Co2-P2. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentNot Yet AssignedSupporting Information Copyright & Permissions© 2024 Chinese Chemical Society Downloaded 0 times PDF downloadLoading ...