A thermal method for obtention of 2 to 3 reduced graphene oxide layers from graphene oxide
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In this work, a thermal reduction method was developed to obtain reduced graphene oxide (rGO) with 2 or 3 layers from
graphene oxide (GO). The GO X-ray diffraction (XRD) patterns presented diffraction peak at 2θ = 10°, which is related to
(002) reflection. After heat treatment under nitrogen (
N2(g)) atmosphere, this peak was shifted to 2θ = 25°, presenting an
interlayer distance of 3.8 Å, associated to GO reduction. BET analysis of modified GO samples identified an average pore
diameter of 45.38 Å and surface area of 23.06 m2/g. In the case of rGO1,
rGO2
and rGO3
samples, they presented surface
areas from 32.47 to 612.74 m2/g and an average pore diameter of 108.21–149.54 m2/g. Thermogravimetric analysis (TGA)
indicated a higher mass loss between 150 and 230 °C. Raman spectra showed ID/IG ratios of rGO samples were higher
than GO (1.36-GO; 1.45-rGO1, 1.87-rGO3) due to reducing GO and increasing sp2
clusters. XPS analysis revealed that the
main carbon species in the samples were sp2-
type bonds (14.99 at% for the GO and 47.85 at% for rGO3).
The FTIR spectra
of rGO1,
rGO2
and rGO3
samples presented peaks at 3454.22 cm−1 (hydroxyl) and 1077.43 cm−1 (C–O).
Como referenciar
SILVA FILHO, J.C.; VENANCIO, E.C.; SILVA, S.C.; TAKIISHI, H.; MARTINEZ, L.G.; ANTUNES, R.A. A thermal method for obtention of 2 to 3 reduced graphene oxide layers from graphene oxide. SN Applied Sciences, v. 2, n. 8, 2020. DOI: 10.1007/s42452-020-03241-9. Disponível em: http://repositorio.ipen.br/handle/123456789/31467. Acesso em: 30 Dec 2025.
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.