Magnetically modified single and turbostratic stacked graphenes from tris(2,2′-bipyridyl) iron(ii) ion-exchanged graphite oxide

T. Szabó, Aristides Bakandritsos, Vassilis Tzitzios, Eamonn Devlin, Dimitris Petridis, I. Dékány

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Loading of graphite oxide (GO) with tris(2,2′-bipyridyl) iron(II) ions and subsequent calcination affords a novel graphene-based composite with magnetic and electrically conductive properties. The pH of the starting aqueous suspension and the washing procedure play a crucial role in the successful immobilization of the iron precursor, which is mainly governed by ion exchange. The complex is intercalated between the graphene oxide layers, where it adopts a distorted conformation. Rapid heating of this solid results in the deflagration of GO and the formation of ultrafine (d = 2-14 nm) Fe2O3 particles with maghemite as the dominant phase. The superparamagnetic maghemite crystals are disper sed uniformly in the high-surface-area diamagnetic matrix built up from single or turbostratic stacked graphenes.

Original languageEnglish
Pages (from-to)14461-14469
Number of pages9
JournalJournal of Physical Chemistry B
Volume112
Issue number46
DOIs
Publication statusPublished - Nov 20 2008

Fingerprint

2,2'-Dipyridyl
Graphite
Oxides
Iron
graphite
Ions
iron
Graphene
oxides
graphene
deflagration
ions
washing
immobilization
Washing
Calcination
roasting
Conformations
Ion exchange
Heating

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Chemistry
  • Surfaces, Coatings and Films

Cite this

Magnetically modified single and turbostratic stacked graphenes from tris(2,2′-bipyridyl) iron(ii) ion-exchanged graphite oxide. / Szabó, T.; Bakandritsos, Aristides; Tzitzios, Vassilis; Devlin, Eamonn; Petridis, Dimitris; Dékány, I.

In: Journal of Physical Chemistry B, Vol. 112, No. 46, 20.11.2008, p. 14461-14469.

Research output: Contribution to journalArticle

Szabó, T. ; Bakandritsos, Aristides ; Tzitzios, Vassilis ; Devlin, Eamonn ; Petridis, Dimitris ; Dékány, I. / Magnetically modified single and turbostratic stacked graphenes from tris(2,2′-bipyridyl) iron(ii) ion-exchanged graphite oxide. In: Journal of Physical Chemistry B. 2008 ; Vol. 112, No. 46. pp. 14461-14469.
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