Open Access Nano Express

Graphite nanoplatelet chemical cross-linking by elemental sulfur

Gianfranco Carotenuto1, Valentina Romeo1, Sergio De Nicola23* and Luigi Nicolais4

Author Affiliations

1 Institute for Composite and Biomedical Materials, CNR. P.le Tecchio, 80, 80125, Naples, Italy

2 Istituto Nazionale di Ottica, CNR, Via Campi Flegrei, 34, Pozzuoli 80078, Italy

3 INFN Sezione di Napoli, Complesso Universitario di M.S. Angelo, via Cinthia, Naples 80126, Italy

4 Department of Material Engineering and Production, University “Federico II” of Naples, P.le Tecchio, 80, Naples 80125, Italy

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Nanoscale Research Letters 2013, 8:94  doi:10.1186/1556-276X-8-94

Published: 20 February 2013

Abstract

Graphite nanoplatelets (GNPs) react with elemental sulfur to provide a mechanically stable, spongy material characterized by good electrical conductivity and high surface development; such unique property combination makes these novel nanostructured materials very useful for applications in different technological fields. The carbon-sulfur reaction can be accurately investigated by thermal analysis (differential scanning calorimetry and thermogravimetric analysis) and energy-dispersive X-ray spectroscopy combined with scanning electron microscopy. The thermal treatment required for the formation of electrically conductive monosulfur connections among the GNP unities has been investigated.

81.05.Ue, 81.05.Rm, 81.16.Be

Keywords:
Graphite nanoplatelets; Sulfur; Mechanical stabilization; Calorimetry