From Polyethylene to Highly Graphitic and Magnetic Carbon Spheres Nanocomposites: Carbonization under Pressure
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AuthorCastelo-Quibén, Jesica; Pastrana Martínez, Luisa María; Carrasco Marín, Francisco; Pérez Cadenas, Agustín Francisco
Carbon microspheresMetal-carbon nanocompositesMagnetic composites
Castelo-Quibén, J. [et al.]. From Polyethylene to Highly Graphitic and Magnetic Carbon Spheres Nanocomposites: Carbonization under Pressure. Nanomaterials 2019, 9, 606; doi:10.3390/nano9040606.
SponsorshipThis research is supported by the project P12-RNM-2892 and RMN-172 (Junta de Andalucía, Spain).
Carbon nanocomposites microspheres were synthesized from Low-Density Polyethylene (LDPE) by a facile one-step strategy under solvent-free conditions. The synthesis of these materials was carried out in a closed Hastelloy® reactor at 700 ºC. The treatment, during which autogenic pressure was generated, leads to highly graphitic materials with stunning properties, particularly concerning the oxidation resistance (compared to the graphite stability). The metallic doping triggers the growth of nanostructures with diverse morphologies around the spheres, obtaining samples with magnetic properties.