Liu Yi, Zeng Zijian, Peng Ruizhi, Ma Kexin, Li Yun, Yan Zhihong
Department of Radiology, The First Affiliated Hospital of Guangdong Pharmaceutical Universtiy, Guangzhou, 510080, China.
School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
Sci Rep. 2025 Jul 1;15(1):20619. doi: 10.1038/s41598-025-03944-2.
Photoelectrocatalytic catalysis of carbon dioxide (CO) and nitrite (NO) direct coupling to synthesise urea (NHCONH) can effectively avoid the high energy consumption and pollution of the Bosch-Meiser method. COF was synthesised by hydroformylation of tetrabromophenyl porphyrin (TBPP), amination of trichothecenes (TC), and linking of the two compounds through Schiff base reaction. The comprehensive characterization of COF showed that has rich pore structure and specific adsorption of CO. These characteristics are favorable for COF to synthesize urea by reducing CO in a green way. COF exhibited a good CO reduction (CORR) performance under photoelectrocatalytic (PEC) conditions with the stable production of urea (NHCONH) at a rate of 0.32 µmol h. That process accompanied by the production of ammonia (NH), formic acid (HCOOH) and carbon monoxide (CO). The synthesis mechanism was discussed.
光电催化二氧化碳（CO）与亚硝酸盐（NO）直接偶联合成尿素（NH₂CONH₂）可有效避免博世-迈泽尔法的高能耗和污染问题。通过四溴苯基卟啉（TBPP）的氢甲酰化、单端孢霉烯族毒素（TC）的胺化以及通过席夫碱反应将这两种化合物连接起来合成了共价有机框架（COF）。对COF的综合表征表明其具有丰富的孔结构和对CO的特异性吸附。这些特性有利于COF以绿色方式通过还原CO来合成尿素。在光电催化（PEC）条件下，COF表现出良好的CO还原（CORR）性能，以0.32 μmol h⁻¹的速率稳定生成尿素（NH₂CONH₂）。该过程伴随着氨（NH₃）、甲酸（HCOOH）和一氧化碳（CO）的产生。对合成机理进行了讨论。
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