Waste-polystyrene foams-derived magnetic carbon material for adsorption and redox supercapacitor applications
Autor: | Rodrigo L. Lavall, Natália C.F. Machado, João Paulo C. Trigueiro, Raquel V. Mambrini, Fabiano Gomes Ferreira de Paula, Paula S. Pinto, Daniel Barrreda, Ricardo Santamaría, Paulo F.R. Ortega, Márcio O. Alves, Victoria Garcia Rocha, Kélrie H.A. Mendes, Larissa A.M. de Jesus |
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Přispěvatelé: | Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), García Rocha, Victoria [0000-0001-6125-8556], Santamaría Ramírez, Ricardo [0000-0001-9818-6998], García Rocha, Victoria, Santamaría Ramírez, Ricardo |
Rok vydání: | 2021 |
Předmět: |
Energy storage
Materials science 020209 energy Strategy and Management Magnetic activated carbon 02 engineering and technology Redox Industrial and Manufacturing Engineering chemistry.chemical_compound Adsorption Specific surface area 0202 electrical engineering electronic engineering information engineering 0505 law General Environmental Science Supercapacitor Renewable Energy Sustainability and the Environment 05 social sciences Expanded polystyrene Building and Construction Chemical engineering Volume (thermodynamics) chemistry Electrode 050501 criminology Polystyrene Pyrolysis |
Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
ISSN: | 0959-6526 |
Popis: | The current impact of plastic waste on the environment and nature pushes for coming up with methods for their efficient reuse and recycle. Expanded polystyrene waste, massively produced worldwide, is presented in this work as a novel precursor of magnetic activated carbons (MAC) for the first time. A simple methodology based on the impregnation of EPS samples with Fe3+ in solution, followed by pyrolysis under Ar pressure and chemical activation is proposed. The as-prepared carbonaceous magnetic materials present nanometric phases of Fe0, Fe3C, and Fe3O4, and showed high specific surface area (672 m2 g−1) and total pore volume (0.35 cm3 g−1), one of the highest found in the carbonaceous magnetic materials literature. Their excellent textural, chemical and electrical properties, combined with the possibility of magnetically collection and regeneration after operation guaranteed an excellent performance of MAC in two different applications: as adsorbents of organic contaminants and as electrodes of redox supercapacitors. The authors would like to thank the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG) for the financial support. P.F.R. Ortega acknowledges the FAPEMIG (DOF nº. 2720262/2018). The authors are also grateful to Rede Mineira de Química. R.L. Lavall is recipient of fellowship from CNPq (grant number 313304/2017-3). N. C. F. Machado, K. H. A. Mendes, and L. A. M. de Jesus would like to thank CEFET-MG and FAPEMIG for scholarships received |
Databáze: | OpenAIRE |
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