Novel dielectric barrier discharge (DBD) plasma method for preparation of Fe-MOFs@Fe2O3 composites to treat waste polyethylene terephthalate (PET)

Waste plastic waste and water pollution caused serious energy waste and environmental problems. In this work, Fe-MOFs@Fe2O3 composites were prepared using BDB plasma method with recycle of waste PET, which was demonstrated by XRD, XPS and EDS characterization. The composite had high specific surface areas (111 m2 g−1) and a low electron-hole complexation rate. In the experiment of photocatalytic degradation of malachite green (MG), the prepared Fe-MOF@Fe2O3 showed good photocatalytic performance when the discharge residence time was 20 min, degrading 99.3% of MG (15 mg /L) within 30 min under visible light. This method provided an idea for the recycling of waste PET plastics and the preparation of new energy functional materials.