CARDOSO, QUEZIASILVA, FRANKS M.VIEIRA, LIGIA S.CASINI, JULIO C.S.SAKATA, SOLANGE K.FARIA, RUBENS N. de2018-11-292018-11-292018CARDOSO, QUEZIA; SILVA, FRANKS M.; VIEIRA, LIGIA S.; CASINI, JULIO C.S.; SAKATA, SOLANGE K.; FARIA, RUBENS N. de. The production of reduced graphene oxide by a low-cost vacuum system for supercapacitor applications. <b>Materials Science Forum</b>, v. 930, p. 609-612, 2018. DOI: <a href="https://dx.doi.org/10.4028/www.scientific.net/MSF.930.609">10.4028/www.scientific.net/MSF.930.609</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/29287.0255-5476http://repositorio.ipen.br/handle/123456789/29287Graphene has attracted significant interest because of its excellent electrical properties. However, a practical method for producing graphene on a large scale is yet to be developed. Graphene oxide (GO) can be partially reduced to graphene-like sheets by removing the oxygencontaining groups and recovering the conjugated structure. GO can be produced using inexpensive graphite as the raw material via cost-effective chemical methods. High vacuum and temperature (10−7 mbar and 1100°C, respectively) conditions are well-known to enable the preparation of reduced powder at the laboratory scale. However, a large-scale high vacuum reduction system that can be routinely operated at 10−7 mbar requires considerable initial capital as well as substantial operational and maintenance costs. The current study aims at developing an inexpensive method for the large-scale reduction of graphene oxide. A stainless steel vessel was evacuated to backing-pump pressure (10−2 mbar) and used to process GO at a range of temperatures. The reduction of GO powder at low vacuum pressures was attempted and investigated by X-ray diffraction and Fourier transform infrared spectroscopy. The experimental results of processing GO powder at various temperatures (200–1000°C) at relatively low pressures are reported. The microstructures of the processed materials were investigated using scanning electron microscopy and chemical microanalyses via energy dispersive X-ray analysis.609-612openAccesscapacitorsfourier transformationgrapheneinfrared spectramicrostructureoxidesproductionreductionscanning electron microscopytemperature dependencex-ray diffractionArtigo de periódico93010.4028/www.scientific.net/MSF.930.609aguardandohttps://orcid.org/0000-0001-6072-5853Sem Percentil15.50