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Title: A self-assembly of graphene oxide@Fe3O4/metallo-phthalocyanine nanohybrid materials: synthesis, characterization, dielectric and thermal properties
Authors: Costa Júnior, Antonio Eufrazio da
Mota, João Paulo Ferreira
Pontes, Sheyliane Maria Adriano
Maia, Francisco Jonas Nogueira
Clemente, Claudenilson da Silva
Fechine, Pierre Basílio Almeida
Bohn, Felipe
Sales, Antonio Jefferson Mangueira
Sombra, Antônio Sérgio Bezerra
Carbone, Luigi
Mele, Giuseppe
Lomonaco, Diego
Mazzetto, Selma Elaine
Keywords: Graphene oxide@Fe3O4;Nanohybrid materials
Issue Date: 1-May-2017
Publisher: Springer
Citation: COSTA JÚNIOR, Antonio Eufrazio da; MOTA, João Paulo Ferreira; PONTES, Sheyliane Maria Adriano; MAIA, Francisco Jonas Nogueira; CLEMENTE, Claudenilson da Silva; FECHINE, Pierre Basílio Almeida; BOHN, Felipe; SALES, Antonio Jefferson Mangueira; SOMBRA, Antônio Sérgio Bezerra; CARBONE, Luigi. A self-assembly of graphene oxide@Fe3O4/metallo-phthalocyanine nanohybrid materials: synthesis, characterization, dielectric and thermal properties. Journal Of Materials Science, [s.l.], v. 52, n. 16, p. 9546-9557, 1 maio 2017. Springer Science and Business Media LLC. Disponível em: Acesso em: 10 jun. 2020.
Portuguese Abstract: In this work, we report the synthesis of novel inorganic–organic hybrid nanomaterials (GO@Fe3O4 /CuPc) and GO@Fe3O4 /ZnPc) consisting of sheets of graphene oxide (GO) decorated by iron oxide nanoparticles (Fe3O4), the whole heterostructure functionalized with metallo-phthalocyanines (MPc, M≡Cu or Zn). First the synthesis of nanomaterial (GO@Fe3O4) was prepared by hydrothermal self-assembly process through the mixture of graphene oxide and Fe+2/Fe+3 salt solution. The metallo-phthalocyanines anchorage on the surface of nanosystem was lately performed by facile and effective ultrasonication method. The structure, composition and morphology of nanohybrids and intermediates were investigated by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, differential scanning calorimetry, UV–visible spectroscopy, scanning and transmission electron microscopy and impedance spectroscopy. All the results suggested that iron-based nanoparticles were successfully deposited onto graphene oxide sheet networks in the form of Fe3O4, forming nanospheres, decreasing in lattice defects of the GO sheets and dramatically increasing the dielectric properties of nanosystems. Nanomaterials presented saturation magnetization in the 52–58 emu/g and superparamagnetic behavior. It was observed that the values of dielectric constant decreased as a function of the amount of phthalocyanines in the nanomaterials. Therefore, because of their versatile magnetic and dielectric performances, the novel superparamagnetic hybrid nanomaterials, herein described, can be considered as potential for microwave devices
ISSN: 1573-4803
Appears in Collections:CCET - DFTE - Artigos publicados em periódicos

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