Charge Transport Approaches in Photocatalytic Supramolecular Systems Composing of Semiconductor and Molecular Metal Complex for CO2 Reduction

• Published in: ChemSusChem 2024-10, Vol.17 (19), p.e202301963-n/a
• Main Authors: Ning, Jiangqi, Chen, Wei, Niu, Qing, Li, Liuyi, Yu, Yan
• Format: Article
• Language: English
• Subjects: Carbon dioxide; Charge transfer; Charge transport; Coordination compounds; metal complex; Photocatalysis; photocatalytic CO2 reduction; semiconductor; supramolecule
• ISSN: 1864-5631; 1864-564X; 1864-564X
• DOI: 10.1002/cssc.202301963

The design of photocatalytic supramolecular systems composing of semiconductors and molecular metal complexes for CO2 reduction has attracted increasing attention. The supramolecular system combines the structural merits of semiconductors and metal complexes, where the semiconductor harvests light and undertakes the oxidative site, while the metal complex provides activity for CO2 reduction. The intermolecular charge transfer plays crucial role in ensuring photocatalytic performance. Here, we review the progress of photocatalytic supramolecular systems in reduction of CO2 and highlight the interfacial charge transfer pathways, as well as their state‐of‐the‐art characterization methods. The remaining challenges and prospects for further design of supramolecular photocatalysts are also presented. Supramolecular systems composing of semiconductor and metal complex are of great interest for photocatalytic CO2 reduction. The catalytic efficiency greatly relies on the charge transfer between semiconductor and metal complex. The focus of this article is to summarize the charge transfer approaches in supramolecular systems. The challenges and outlooks of supramolecular systems in future industrial applications are also proposed.