The production of reduced graphene oxide by a low-cost vacuum system for supercapacitor applications
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2018
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Materials Science Forum
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Graphene 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.
Como referenciar
CARDOSO, 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. Materials Science Forum, v. 930, p. 609-612, 2018. DOI: 10.4028/www.scientific.net/MSF.930.609. Disponível em: http://repositorio.ipen.br/handle/123456789/29287. Acesso em: 26 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.