Comparison Between Graphene Oxides Reduced by Microwave System with Different Power Sets

The present work compares graphene oxides produced by the Marcano's method and the subsequent reduction process using a microwave system with different power and time sets. The thermal profiles of the reduction processes were analyzed, emphasizing the heat capacity from the 600 W test of 3.44 k...

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Bibliographic Details
Published in:Materials research (São Carlos, São Paulo, Brazil) São Paulo, Brazil), 2022, Vol.25 (suppl 2), p.1
Main Authors: Martins, A.L.B. S., da Silva, E.F., Marques, M.F.V., Pinheiro, W.A.
Format: Article
Language:English
Subjects:
ENGINEERING, CHEMICAL
FTIR
Graphene
graphene oxide
Infrared spectroscopy
Interlayers
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
microwave reduction
Raman spectroscopy
Reduction
X-ray diffraction
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Summary:The present work compares graphene oxides produced by the Marcano's method and the subsequent reduction process using a microwave system with different power and time sets. The thermal profiles of the reduction processes were analyzed, emphasizing the heat capacity from the 600 W test of 3.44 kJ/K. The X-ray diffraction showed a reduction in the interlayer space and the number of layers in all powers. The infrared and UV-Vis spectroscopy results showed a clear decrease in the bands corresponding to the oxygenated group and partial restoration of aromatic bonds. The Raman spectroscopy showed that the 1000 W power set originated a higher defective structure. The observed results allow the conclusion that the 600 W power promotes a little better result between the analyzed power sets.
ISSN:1516-1439
1980-5373
1980-5373
DOI:10.1590/1980-5373-mr-2022-0140