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Issue 83, 2017, Issue in Progress
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Microwave-assisted reduction method under nitrogen atmosphere for synthesis and electrical conductivity improvement of reduced graphene oxide (rGO)

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Abstract

A facile method to synthesize rGO using a microwave-assisted method under N2-atmosphere conditions is reported. Two different reducing agents were used in this research, hydrazine hydrate and L-ascorbic acid (L-AA). The reduction of graphene oxide was completed in 3 minutes by the microwave-assisted method under N2-atmosphere conditions. The structures and morphologies of both rGOs prepared by this new method were confirmed by attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectrometry, X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectrometry (EDX), confirming the formation of rGO. Four-point probe measurements showed an electrical conductivity of 18.10 S cm−1 for the rGO reduced by hydrazine hydrate and 12.02 S cm−1 for the rGO reduced by L-AA. Combining this new method with annealing at 300 °C for 30 min resulted in a higher electrical conductivity: up to 23.26 S cm−1 for the rGO reduced by hydrazine hydrate and up to 16.19 S cm−1 for the rGO reduced by L-AA. This study provides a new perspective on synthesizing rGO with high electrical conductivity using an effective and efficient method.

Graphical abstract: Microwave-assisted reduction method under nitrogen atmosphere for synthesis and electrical conductivity improvement of reduced graphene oxide (rGO)

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Supplementary files

Article information


Submitted
08 Sep 2017
Accepted
02 Nov 2017
First published
13 Nov 2017

This article is Open Access

RSC Adv., 2017,7, 52391-52397
Article type
Paper

Microwave-assisted reduction method under nitrogen atmosphere for synthesis and electrical conductivity improvement of reduced graphene oxide (rGO)

F. Iskandar, U. Hikmah, E. Stavila and A. H. Aimon, RSC Adv., 2017, 7, 52391
DOI: 10.1039/C7RA10013B

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