Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector
Honeycomb-like porous carbon loaded with CdS/ZnS heterojunction with enhanced photocatalytic performance towards tetracycline degradation and H2 generation
Accelerating the charge separation efficiency is a crucial approach to improve the photocatalytic performance of semiconductors. The design and synthesis of heterojunctions can effectively inhibit the recombination of photogenerated electron-hole pairs and enhance the charge separation efficiency. In this work, an easy-handling calcination route was proposed to prepare CdS/ZnS heterojunction loaded on honeycomb-like porous carbon ([email protected]) using chitosan as a precursor. The unique honeycomb-like porous structure facilitated the separation and migration of photoexcited electrons and holes, improving the utilization of visible light and shortening the distance of electron transport. The photocatalytic performance of [email protected] was evaluated by the degradation of tetracycline (TC) and H2 production from water splitting under visible light. The optimized [email protected] composite can degrade almost 92.40 % of TC under visible light irradiation in 60 min. Such [email protected] composite presented an excellent photocatalytic activity with H2 production rate of 5.49 mmol h?1 g?1, which was 54.9 and 2.28-folds higher than [email protected] and [email protected] Furthermore, the possible photocatalytic reaction mechanism and pathway towards TC degradation and simultaneous H2 generation was proposed.
» Author: Haodong Sun, Zuoyi Xiao, Zhenyu Zhao, Shangru Zhai, Qingda An
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737
