-formylation of amines with CO is a promising approach to high-efficient utilization of CO as C1 feedstock, while conventional thermocatalytic processes suffer from harsh reaction condition and intense energy consumption. In this work, photocatalytic -formylation of amines with CO is achieved at room temperature over Pt-Bi/CeO composite catalyst. The Pt-Bi bimetallic sites increase the concentration of surface oxygen vacancies. Furthermore, the synergistic effects of Pt and Bi improve the light absorption capacity, reduce the band gap energy of the photocatalyst and promote the separation of photoinduced charge carriers. Using PhSiH as the reducing agent, the conversion of -methylaniline reaches 100 % after 3 h irradiation in -dimethylformamide solvent with a methylformanilide selectivity of 90.8 %. The composite photocatalyst shows promising cycling stability and universality.

中文翻译：

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Pt-Bi 双金属修饰的 CeO2−x 上胺与 CO2 的光催化 N-甲酰化

-胺与CO的甲酰化是高效利用CO作为C1原料的一种有前景的方法，而传统的热催化工艺反应条件恶劣且能耗高。在这项工作中，在室温下通过 Pt-Bi/CeO 复合催化剂实现了胺与 CO 的光催化甲酰化。 Pt-Bi 双金属位点增加了表面氧空位的浓度。此外，Pt和Bi的协同效应提高了光吸收能力，降低了光催化剂的带隙能量，促进了光生载流子的分离。以PhSiH为还原剂，在-二甲基甲酰胺溶剂中照射3 h后，-甲基苯胺的转化率达到100%，甲基甲酰苯胺选择性为90.8%。该复合光催化剂表现出良好的循环稳定性和通用性。