题目： | Photothermal Catalytic Polyester Upcycling over Cobalt Single-Site Catalyst |
作者： | Yu Liu1,2, Xuchun Wang1,3, Qingye Li1, Tianran Yan1,2, Xiangxi Lou1,2, Congyang Zhang1,3, Muhan Cao1,2, Liang Zhang1,2*, Tsun-Kong Sham3, Qiao Zhang1, Le He1,2, and Jinxing Chen1,2* |
单位： | 1Institute of Functional Nano & Soft Materials (FUNSOM), Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu 215123, P.R. China 2Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, Jiangsu 215123, P.R. China 3Department of Chemistry, University of Western Ontario, London, Ontario N6A5B7, Canada |
摘要： | Photothermal catalytic conversion of waste plastics into fuels and/or feedstocks using renewable solar energy can achieve solar-to-chemical conversion, resource sustainability, and environmental remediation simultaneously. However, the construction of photothermal catalysts with strong light absorption and high catalytic activity remains a great challenge. In this work, integrated cobalt single-site catalysts (Co SSCs), coupled with strong photothermal conversion, high catalytic activity, and stability, are employed to catalyze the glycolysis of polyesters. The unique coordination-unsaturated Co-O5 single-site can coordinate with the carbonyl groups in polyester, thus boosting the nucleophilic addition elimination processes. As a result, the spacetime yield of Co SSCs is an order of magnitude higher than that of general catalysts. In addition, the polyethylene terephthalate (PET) conversion and bis(2-hydroxyethyl) terephthalate yield in photothermal catalysis are 5.4 and 6.6 times higher than those of thermal catalysis under the same conditions, which are contributed by the localized heating effect. Technical economic analysis shows that the recycling of 105 tons of waste PET by photothermal catalysis consumes 146.4 GW·h electrical energy and misses 7.44 × 104 tons of CO2 emission. Therefore, a high-efficient photothermal catalytic plastic recycling system is of great significance for waste plastic valorization. |
影响因子： | 18.808 |
分区情况： | 一区 |
链接： | https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.202210283 |
责任编辑：郭佳