Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 306, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121087
Keywords
Dual-functional photocatalytic system; Photoredox; Polyoxometalate; Aromatic alcohol conversion; H-2
Funding
- National Natural Science Foundation of China [22072024, U1662112]
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Efficient aromatic alcohol oxidation with simultaneous H-2 evolution under aqueous conditions was achieved using a polyoxometalate (POM)-incorporated ZnIn2S4 dual-functional photocatalytic system. The synergy between HPM and ZIS contributed to the formation of a Z-type heterojunction structure, enhancing redox capacity. The sub-nanometer size of POM clusters ensured faster interfacial charge transfer kinetics.
Efficient aromatic alcohol oxidation with simultaneous H-2 evolution under aqueous conditions is achieved in a polyoxometalate (POM)-incorporated ZnIn2S4 dual-functional photocatalytic system. The synergy between HPM and ZIS contributes to the formation of a Z-type heterojunction structure and thus enhances redox capacity. Moreover, the sub-nanometer size of POM clusters endows molecular-level interfacial contact, which acts as an electron bridge ensuring faster interfacial charge transfer kinetics. Therefore, an impressive nearly 100% yield of benzaldehyde and 10.6 mmol.g(-1).h(-1) H-2-evolution rate are observed for POM/ZIS nanocomposites even under an anaerobic atmosphere with water as the solvent. This is the first application of POM-based materials in the anaerobic oxidation of benzyl alcohol with concomitant H-2 production. This study expands the possibilities for designing multifunctional POM-based photocatalysts for economic and ecological photoredox applications.
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