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Ternary nanocomposites of reduced graphene oxide, polyaniline and hexaniobate: hierarchical architecture and high polaron formation.
Silva, Claudio H B; Iliut, Maria; Muryn, Christopher; Berger, Christian; Coldrick, Zachary; Constantino, Vera R L; Temperini, Marcia L A; Vijayaraghavan, Aravind.
Afiliação
  • Silva CHB; Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil.
  • Iliut M; School of Materials and National Graphene Institute, The University of Manchester, Booth St E, Manchester M13 9PL, United Kingdom.
  • Muryn C; present address: Department of Physical Chemistry, Institute of Chemistry, Federal University of Bahia, Rua Barão de Jeremoabo, 147, Salvador 40170-115, Brazil.
  • Berger C; School of Materials and National Graphene Institute, The University of Manchester, Booth St E, Manchester M13 9PL, United Kingdom.
  • Coldrick Z; School of Chemistry and Photon Science Institute, The University of Manchester, Alan Turing Building, Oxford Rd, Manchester M13 9PY, United Kingdom.
  • Constantino VRL; School of Materials and National Graphene Institute, The University of Manchester, Booth St E, Manchester M13 9PL, United Kingdom.
  • Temperini MLA; School of Electrical and Electronic Engineering, The University of Manchester, Sackville Street Building, Manchester M1 3BB, United Kingdom.
  • Vijayaraghavan A; Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil.
Beilstein J Nanotechnol ; 9: 2936-2946, 2018.
Article em En | MEDLINE | ID: mdl-30546990
Nanostructured systems, such as nanocomposites, are potential materials for usage in different fields since synergistic effects of their components at the nanoscale domain may improve physical/chemical properties when compared to individual phases. We report here the preparation and characterisation of a new nanocomposite composed of polyaniline (PANI), reduced graphene oxide (rGO) and hexaniobate (hexNb) nanoscrolls. Atomic force microscopy images show an interesting architecture of rGO flakes coated with PANI and decorated by hexNb. Such features are attributed to the high stability of the rGO flakes prepared at room temperature. Detailed characterisation by X-ray photoelectron and Raman spectroscopies indicates an intermediate reduction degree for the rGO component and high doping degree of the PANI chains compared to the neat polymer. The latter feature can be attributed to cooperative effects of PANI chains with rGO flakes and hexNb nanoscrolls, which promote conformational changes of the polymer backbone (secondary doping). Spectroscopic and electrochemistry data indicate a synergetic effect on the ternary nanocomposite, which is attributed to interactions between the components resulting from the morphological aspects. Therefore, the new nanocomposite presents promising properties for development of new materials in the film form on substrates for sensing or corrosion protection for example.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Beilstein J Nanotechnol Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha
Texto completo
Adicionar na Minha BVS
Imprimir
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PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Beilstein J Nanotechnol Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha