Heterostructured MOFs photocatalysts for water splitting to produce hydrogen

Metal-organic frameworks (MOFs) with high designability and structure diversity have been widely developed as promising photocatalytic materials, but most of them suffer from poor charge transportation and separation efficiency. To address it, the construction of MOFs-based heterostructures has been thus highly inspired. In this minireview, we will first introduce the basic principles of photocatalytic water splitting and heterostructure systems, and then discuss state-of-the-art MOFs-based heterostructures for photocatalytic water splitting to produce hydrogen. Meanwhile, special attention will be paid to the key factors affecting the interfacial charge transfer of heterostructures, such as interface connection mode, morphology control, and modification. Eventually, the challenges and prospects faced by the construction of high-efficiency MOFs-based heterostructure water slitting photocatalysts are proposed.