Abstract
In nature, Nepenthes has a unique tubular structure for harvesting and preserving goals. Herein, inspired by Nepenthes, we report the selective photocatalytic oxidation of benzyl alcohol by using the hierarchical ZnIn2S4/Ru nanotubes. The tubular chamber with abundant active sites not only facilitates enriching the target molecules but also shortening the bulk-to-surface distance, and the Zn-S-Ru interfacial bonds creates direct charge transfer channels for the activating O2 to generate •O2– species boosting the benzyl alcohol selective conversion to benzaldehyde. The photocatalytic benzyl alcohol oxidation reaction has a high conversion rate of 68.2 % as well as a benzaldehyde selectivity of 99 % under visible light irradiation. The effects of Zn-S-Ru interfacial bonds on modulating the carrier transfer dynamics for the selective catalytic oxidation reaction are investigated by electrochemical characterization and density functional theory simulation. This work offers an inspiration on regulating the interfacial charge transfer channel for the photo-driven selective oxidation reaction.
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