A self-assembly of graphene oxide@Fe3O4/metallo-phthalocyanine nanohybrid materials: synthesis, characterization, dielectric and thermal properties

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

A self-assembly of graphene oxide@Fe3O4/metallo-phthalocyanine nanohybrid materials: synthesis, characterization, dielectric and thermal properties

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dc.contributor.author	Costa Júnior, Antonio Eufrazio da
dc.contributor.author	Mota, João Paulo Ferreira
dc.contributor.author	Pontes, Sheyliane Maria Adriano
dc.contributor.author	Maia, Francisco Jonas Nogueira
dc.contributor.author	Clemente, Claudenilson da Silva
dc.contributor.author	Fechine, Pierre Basílio Almeida
dc.contributor.author	Bohn, Felipe
dc.contributor.author	Sales, Antonio Jefferson Mangueira
dc.contributor.author	Sombra, Antônio Sérgio Bezerra
dc.contributor.author	Carbone, Luigi
dc.contributor.author	Mele, Giuseppe
dc.contributor.author	Lomonaco, Diego
dc.contributor.author	Mazzetto, Selma Elaine
dc.date.accessioned	2020-06-16T18:56:54Z
dc.date.available	2020-06-16T18:56:54Z
dc.date.issued	2017-05-01
dc.description.resumo	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	pt_BR
dc.identifier.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: https://link.springer.com/article/10.1007%2Fs10853-017-1133-3. Acesso em: 10 jun. 2020. http://dx.doi.org/10.1007/s10853-017-1133-3.	pt_BR
dc.identifier.doi	10.1007/s10853-017-1133-3
dc.identifier.issn	1573-4803
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29276
dc.language	en	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Graphene oxide@Fe3O4	pt_BR
dc.subject	Nanohybrid materials	pt_BR
dc.title	A self-assembly of graphene oxide@Fe3O4/metallo-phthalocyanine nanohybrid materials: synthesis, characterization, dielectric and thermal properties	pt_BR
dc.type	article	pt_BR