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Functionalizing graphene oxide with alkylamine by gamma-ray irradiation method


Ahmad Daud, Noraniza and Chieng, Buong Woei and Ibrahim, Nor Azowa and Talib, Zainal Abidin and Muhamad, Ernee Noryana and Zainal Abidin, Zurina (2017) Functionalizing graphene oxide with alkylamine by gamma-ray irradiation method. Nanomaterials, 7 (6). pp. 1-15. ISSN 2079-4991


A gamma-ray irradiation technique was used to functionalize graphene oxide (GO) with alkylamines of various alkyl chain lengths. Functionalization of the alkyl chains onto the GO was confirmed by nuclear magnetic resonance (1H NMR), Fourier transform infrared (FTIR), and X-ray diffraction (XRD). FTIR of the functionalized GO showed the appearance of significant peaks around 2960–2850 cm−1 (–CH2) which came from long alkyl chains, together with a peak around 1560–1450 cm−1, indicating the formation of C–NH–C. XRD showed an additional diffraction peak at a lower 2θ angle, indicating that the intercalation of the alkylamine was successful. The effects on the morphological and thermal properties of GO functionalized with alkyl chains of various lengths were investigated. Scanning electron microscopy (SEM) analysis showed an increase in surface roughness when the alkyl chain length was increased. The addition of alkyl chains on GO surfaces significantly improved the thermal stability of the GO, suggesting that these surfaces have great potential for use as a hydrophobic material in industry.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Science
DOI Number: https://doi.org/10.3390/nano7060135
Publisher: MDPI
Keywords: Graphene oxide; Functionalization; Alkylamine
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 27 Feb 2019 07:52
Last Modified: 27 Feb 2019 07:52
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/nano7060135
URI: http://psasir.upm.edu.my/id/eprint/61925
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