Affiliation:
1. The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE) National Engineering Laboratory of Eco-Friendly Polymeric Materials College of Chemistry Sichuan University Chengdu 610064 China
2. State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy 2011-Collaborative Innovation Center of Chemistry for Energy Materials Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
Abstract
AbstractImproper end‐of‐life treatments of C−O‐linked plastics have caused serious environmental crises and resource waste. One effective method to solve this issue is the catalytic alcoholysis of these plastics. Traditional homogeneous catalysts or metal‐based heterogeneous catalysts for alcoholysis have some drawbacks, such as difficulty in complete separation, environmental threats, and economic burden. Thus, finding a green, low‐cost, recyclable, and highly efficient catalyst substitute is critical. Here, we reported that polymeric carbon nitride nanosheets can serve as a metal‐free heterogeneous catalyst for the methanolysis of polycarbonate, polyethylene terephthalate, and polylactic acid. The catalyst exhibits remarkable performance and could be reused at least four times. NHx was found to be the predominant active site of the catalyst by characterization and experiments. These results show promise for the design of metal‐free heterogeneous catalysts to depolymerize C−O‐linked plastics.
Funder
National Natural Science Foundation of China