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dc.contributor.authorViana, Marcelo M.
Lima, Meiriane C.F.S.
Forsythe, Jerimiah C.
Gangoli, Varun S.
Cho, Minjung
Cheng, Yinhong
Silva, Glaura G.
Wong, Michael S.
Caliman, Vinicius
dc.date.accessioned 2017-05-15T17:23:58Z
dc.date.available 2017-05-15T17:23:58Z
dc.date.issued 2015
dc.identifier.citation Viana, Marcelo M., Lima, Meiriane C.F.S., Forsythe, Jerimiah C., et al.. "Facile Graphene Oxide Preparation by Microwave-Assisted Acid Method." Journal of the Brazilian Chemical Society, 26, no. 5 (2015) Sociedade Brasileira de Qu�mica: 978-984. http://dx.doi.org/10.5935/0103-5053.20150061.
dc.identifier.urihttps://hdl.handle.net/1911/94260
dc.description.abstract Few-layered graphene oxide (GO) was prepared using a fast and energy-saving method by microwave-assisted acid technique. The oxygenated groups existing on the GO surface were determined using UV-Vis, X-ray photoelectron and Fourier-transform infrared spectroscopies. An oxygenated group percentage of 30% in mass for the GO was observed by thermogravimetric analysis. The reduced few-layered graphene oxide (rGO) film annealed at 110 °C deposited onto a silicon/silica wafer showed expanded graphite-like structure with 0.70 nm between the rGO sheets, as determined by X-ray diffraction. This rGO film exhibited a relatively high electrical conductivity value of 7.36 × 102 S m-1 confirming the good restoration of the π-conjugated system. The prepared GO sample exhibited good stability in water from pH 4 to 12, as determined by its zeta potential, and contained 5 to 9 layers, as determined by atomic force microscopy (AFM) and transmission electron microscopy (TEM).
dc.language.iso eng
dc.publisher Sociedade Brasileira de Qu�mica
dc.rights This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.rights.urihttps://creativecommons.org/licenses/by-nc/3.0/us/
dc.title Facile Graphene Oxide Preparation by Microwave-Assisted Acid Method
dc.type Journal article
dc.citation.journalTitle Journal of the Brazilian Chemical Society
dc.subject.keywordmicrowave irradiation
graphene oxide
film
conductivity
dc.citation.volumeNumber 26
dc.citation.issueNumber 5
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.5935/0103-5053.20150061
dc.type.publication publisher version
dc.citation.firstpage 978
dc.citation.lastpage 984


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