1. UpcyclingWaste Polypropylene into Graphene Flakeson Organically Modified Montmorillonite.
- Author
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Gong, Jiang, Liu, Jie, Wen, Xin, Jiang, Zhiwei, Chen, Xuecheng, Mijowska, Ewa, and Tang, Tao
- Subjects
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PLASTIC scrap recycling , *POLYPROPYLENE , *GRAPHENE , *MONTMORILLONITE , *CARBONIZATION , *MICROSTRUCTURE , *HYDROCARBONS , *CATALYTIC activity - Abstract
Recently,upcycling waste plastics into high-value-added carbonnanomaterials has attracted much attention; however, few studies havefocused on the conversion of waste plastics into graphene with highyield. Herein, we report a simple novel method to synthesize grapheneflakes (GFs) with high yield through catalytic carbonization of wastepolypropylene (PP) using organically modified montmorillonite (OMMT)as degradation catalyst and template at 700 °C. The yield, morphology,microstructure, phase structure, thermal stability, and surface elementcomposition of GFs were investigated. In addition, it was found thatOMMT not only promoted the degradation of waste PP into light hydrocarbonsand aromatics but also acted as template and catalyzed carbonizationof the light hydrocarbons and aromatics into GFs. At last, a possiblemechanism for the formation of GFs was put forward. This simple approachprovides a novel way to effectively prepare high-value-added GFs usingwaste plastics as carbon sources. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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