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Issue 47, 2014
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Nanofluids based on fluorinated graphene oxide for efficient thermal management

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Abstract

Nanofluids containing various concentrations of graphene oxide (GO), fluorinated graphene oxide (FGO) and highly fluorinated graphene oxide (HFGO) were prepared and their thermal conductivity (TC) was evaluated at different temperatures. Here we report the enhanced TC of stable suspensions of FGO (fluorine (F) ∼5.6%) and HFGO (F ∼ 23%) in comparison to benchmark GO and bare carrier fluids. Enhancement in TC of up to 15–25% is observed in these fluorinated suspensions even at lower filler fractions of 0.01–0.10 wt% and all fluids exhibit filler dependent enhancement in TC. The enhanced TC observed in the case of FGO and HFGO is explained based on liquid layering and percolation mechanism. Moreover, this investigation also unveils the role of F in enhancing the TC of GO by modifying the surface properties and the effect of liquid layering in determining effective TC of nanofluids.

Graphical abstract: Nanofluids based on fluorinated graphene oxide for efficient thermal management

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Publication details

The article was received on 29 Jan 2014, accepted on 23 May 2014 and first published on 28 May 2014


Article type: Communication
DOI: 10.1039/C4RA00843J
Citation: RSC Adv., 2014,4, 24887-24892
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    Nanofluids based on fluorinated graphene oxide for efficient thermal management

    P. M. Sudeep, J. Taha-Tijerina, P. M. Ajayan, T. N. Narayanan and M. R. Anantharaman, RSC Adv., 2014, 4, 24887
    DOI: 10.1039/C4RA00843J

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