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Synthesis of multi-layer graphene oxide from HCl-treated coke and Brazilian coals by sulfuric acid thermal exfoliation and ozone oxidation.
Buitrago Sanchez, Sergio Nicolas; Salla, Julia da Silveira; Cesconeto, Laura Piacentini; Rocha, Gabriel Lincoln da; Virmond, Elaine; Moreira, Regina de Fatima Peralta Muniz.
Afiliação
  • Buitrago Sanchez SN; Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Campus Universitário - Trindade, 88040-900, Florianópolis, SC, Brazil.
  • Salla JDS; Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Campus Universitário - Trindade, 88040-900, Florianópolis, SC, Brazil.
  • Cesconeto LP; Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Campus Universitário - Trindade, 88040-900, Florianópolis, SC, Brazil.
  • Rocha GLD; Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Campus Universitário - Trindade, 88040-900, Florianópolis, SC, Brazil.
  • Virmond E; Department of Energy and Sustainability, Federal University of Santa Catarina, Campus Universitário - Araranguá, 88905-120, Araranguá, SC, Brazil.
  • Moreira RFPM; Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Campus Universitário - Trindade, 88040-900, Florianópolis, SC, Brazil.
Heliyon ; 10(9): e30546, 2024 May 15.
Article em En | MEDLINE | ID: mdl-38726133
ABSTRACT
This study involved the synthesis and characterization of graphene oxide (GO) from mineral coke and bituminous coal. HCl treated and non-HCl treated ultrafine powder obtained from both precursors were treated with H2SO4, followed by thermal treatment, and oxidation with ozone and ultra-sonication for GO production. The synthesized materials were characterized using Fourier transform infrared spectroscopy (FTIR), zeta potential (ZP), particle size distribution (PSD), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Raman spectroscopy. The results confirmed the exfoliation of the material primarily at the edges of its structure and the formation of multilayer graphene oxide (GO) from mineral coke and bituminous coal. Furthermore, it was found that carbonaceous materials with graphitic morphology are easier to exfoliate and oxidize, leading to the production of higher quality graphene oxide. Therefore, the GO synthesized from mineral coke exhibited the best quality in this study. The methodology used proposes an innovative approach, offering a faster, more economical, and environmentally friendly synthesis compared to the traditional Hummers' method, thereby adding value to other raw materials that can be utilized in this process, such as Brazilian coke and coal.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE País/Região como assunto: America do sul / Brasil Idioma: En Revista: Heliyon Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE País/Região como assunto: America do sul / Brasil Idioma: En Revista: Heliyon Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido