0D/3D direct Z-scheme heterojunctions hybridizing by MoS2 quantum dots and honeycomb conjugated triazine polymers (CTPs) for enhanced photocatalytic performance

Herein, a novel direct Z-scheme photocatalyst was accomplished by hybridization of 0D MoS2 quantum dots (MSQDs) and 3D honeycomb-like conjugated triazine polymers (CTP) (namely, CTP-MSQD). The unique 0D/3D hierarchical structure significantly enhanced the exposure of active sites and light harvesting property, while the formed p-n junction enabled the direct strong interface coupling without the necessity of any mediators. The optimized CTP-MSQD3 exhibited continuously increased visible-light-driven photocatalytic activity and strong durability both in Cr(VI) reduction and H-2 evolution, featured a rate of 0.069 min(-1) and 1070 mu mol/(hr.g), respectively, which were 8 times than those of pure 3D-CTP (0.009 min(-1) and 129 mu mol/(hr.g)). We believe that this work provides a promising photocatalyst system that combines a Otocatalytic conversion. (C) 2022 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.

Automated summary

A novel direct Z-scheme photocatalyst was prepared by hybridizing 0D MoS2 quantum dots and 3D honeycomb-like conjugated triazine polymers. The 0D/3D hierarchical structure and p-n junction significantly improved the photocatalytic activity and durability.