Zhang An-An, Li Yu-Lin, Fang Zhi-Bin, Xie Lei, Cao Rong, Liu Yangyang, Liu Tian-Fu
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
Department of Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
ACS Appl Mater Interfaces. 2022 May 11;14(18):21050-21058. doi: 10.1021/acsami.2c02917. Epub 2022 Apr 27.
Photocatalytic CO reduction is one of the most cost-effective and environmentally friendly techniques of converting CO into high-value compounds and/or fuels. However, the performance of most current photocatalytic CO reduction catalysts is less than satisfactory for practical applications. Here, we synthesized a heterogeneous structure by integrating CuO and a porphyrin hydrogen-bonded organic framework (PFC-45), which was then fabricated into a thin-film catalyst on carbolic paper (CP) using a facile electrophoretic deposition technology. With improved electron-hole separation efficiency and visible-light-harvesting ability, this film (PFC-45/CuO@CP) significantly enhanced CO-to-CO photoreduction, exceeding 2.4 and 3.2 times that of PFC-45@CP and PFC-45/CuO particles, respectively. Remarkably, PFC-45/CuO@CP also exhibited high selectivity (99%) and outstanding activity (11.81 μmol g h) for photocatalytic CO reduction in pure water without any sacrificial agent. This work demonstrates a new strategy to design photocatalysts for efficient CO reduction.
光催化CO还原是将CO转化为高价值化合物和/或燃料的最具成本效益和环境友好的技术之一。然而，目前大多数光催化CO还原催化剂的性能在实际应用中并不令人满意。在此，我们通过将CuO与卟啉氢键有机框架（PFC-45）整合合成了一种异质结构，然后使用简便的电泳沉积技术将其制备成碳纸上的薄膜催化剂。通过提高电子-空穴分离效率和可见光捕获能力，该薄膜（PFC-45/CuO@CP）显著增强了CO到CO的光还原，分别超过PFC-45@CP和PFC-45/CuO颗粒的2.4倍和3.2倍。值得注意的是，PFC-45/CuO@CP在没有任何牺牲剂的纯水中对光催化CO还原也表现出高选择性（99%）和出色的活性（11.81 μmol g h）。这项工作展示了一种设计用于高效CO还原的光催化剂的新策略。
