A simple mechanical technique to obtain carbon nanoscrolls from graphite nanoplatelets
1 Institute for Composite and Biomedical Materials, National Research Council, Viale Kennedy, 54 - Mostra d'Oltremare Pad. 20, Naples 80125, Italy
2 SPIN Institute, National Research Council, Complesso Universitario di M.S. Angelo, Via Cinthia, Naples 80126, Italy
3 INFN Sezione di Napoli, Complesso Universitario di M.S. Angelo, Via Cinthia, Naples 80126, Italy
4 Institute of Cybernetics “E. Caianiello”, National Research Council, Via Campi Flegrei 34, Pozzuoli 80078, Italy
5 Department of Material Engineering and Production, University of Naples “Federico II”, Piazzale Tecchio, 80, Naples 80125, Italy
Nanoscale Research Letters 2013, 8:403 doi:10.1186/1556-276X-8-403Published: 30 September 2013
A simple approach for the bulk production of carbon nanoscrolls (CNSs) is described. This method is based on the application of shear-friction forces to convert graphite nanoplatelets into carbon nanoscrolls using a bi-axially oriented polypropylene (BOPP) surface. The combined action of shear and friction forces causes the exfoliation of graphite nanoplatelets and the simultaneous roll-up of graphite layers. Evidence of the CNS formation is given by optical microscopy, scanning electron microscopy, and transmission electron microscopy. These investigations reveal that the CNSs have a long tube-like and fusiform structure with a hollow core surrounded by few layers of graphene. Micro-Raman spectroscopy shows that the produced structures are not defect free, and optical spectroscopy reveals distinctive features due to the presence of two weak absorption bands at 224 and 324 nm.