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Journal of Materials Science

Erschienen in:

01.09.2014

A glycerol–water-based nanofluid containing graphene oxide nanosheets

verfasst von: Ali Ijam, A. Moradi Golsheikh, R. Saidur, P. Ganesan

Erschienen in: Journal of Materials Science | Ausgabe 17/2014

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Abstract

Nanofluids are simply the dispersion of nanometer-sized particles in different fluids. Graphene oxide nanosheets (GONs) were prepared by exfoliating the graphite oxide. The GONs were investigated using Fourier transform-infrared spectroscopy, Raman spectroscopy, XRD analysis, high-resolution emission electron microscopy, transmission electron microscopy, and UV–visible spectroscopy. GONs/glycerol–water-based nanofluid was prepared by the two-step method. The stability of the nanofluid was investigated with respect to time. Thermal and electrical conductivity of the prepared nanofluid was examined with different temperatures (25–45 °C) and weight fractions (0.02–0.1 wt%). The nanofluid is found to be stable for more than 5 months. The results showed an enhancement in thermal conductivity of about 4.5 % at 25 °C with a weight fraction of 0.02 %. The improvement was up to 11.7 % with a weight fraction of 0.1 wt% at 45 °C. The electrical conductivity was increased with increasing the weight fraction and temperature. The improvement in electrical conductivity was about 5890 % at 25 °C and 0.1 wt%.

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Titel: A glycerol–water-based nanofluid containing graphene oxide nanosheets
verfasst von: Ali Ijam
A. Moradi Golsheikh
R. Saidur
P. Ganesan
Publikationsdatum: 01.09.2014
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 17/2014
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-014-8312-2

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