Wu Jingyi, Wang Wei, Chen Xudan, Luo Qiquan, Yan Changzeng, Jiao Zhen, Li Yuehui
College of Smart Energy, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.
Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, P. R. China.
Adv Sci (Weinh). 2025 Jan;12(3):e2409002. doi: 10.1002/advs.202409002. Epub 2024 Nov 29.
Visible light-driven photocatalytic CO reduction (CORR) offers a sustainable and promising solution to environmental and energy challenges. However, the design of efficient photocatalysts is hindered by poor interface interactions in heterojunctions and a limited understanding of reaction kinetics. A modified FeO photocatalyst, M-FeO@MXene, is introduced featuring KH-550-modified M-FeO hollow nanocubes coated with MXene, constructed via an electrostatic and Fe-O-Ti bonding self-assembly method. This design achieves an unprecedented CO production rate of 240 µmol g⁻¹ h⁻¹ among non-noble metal catalysts (8.6 folds vs FeO). The Fe-O-Ti sites enhance *COOH intermediate formation and CO production through higher electron deficiency of Fe and rapid charge transfer. This study offers new insights on the use of functional metal oxides and high-quality Mxene layers to design efficient metal oxide-based photocatalysts.
可见光驱动的光催化CO还原（CORR）为环境和能源挑战提供了一种可持续且有前景的解决方案。然而，异质结中不良的界面相互作用以及对反应动力学的有限理解阻碍了高效光催化剂的设计。本文介绍了一种改性的FeO光催化剂M-FeO@MXene，它具有经KH-550改性的M-FeO空心纳米立方体，并涂覆有MXene，通过静电和Fe-O-Ti键合自组装方法构建而成。这种设计在非贵金属催化剂中实现了前所未有的240 μmol g⁻¹ h⁻¹的CO产率（相对于FeO提高了8.6倍）。Fe-O-Ti位点通过更高的Fe电子缺欠和快速的电荷转移增强了*COOH中间体的形成和CO的产生。本研究为利用功能金属氧化物和高质量的Mxene层设计高效的金属氧化物基光催化剂提供了新的见解。
