Journal
MATERIALS LETTERS
Volume 274, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2020.128043
Keywords
Carbon nanotubes; Nanoparticles; Fe3O4; Nanofluid; Thermal conductivity
Funding
- Deanship of Scientific Research (DSR), King Abdulaziz University, Jeddah [DF836-135-1441]
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The synthesis of magnetic multi-walled carbon nanotubes (MWCNTs)-iron oxide (Fe3O4) nanocomposite (NC) provides many interesting traits in individual moieties unfolding new opportunities for a wide range of applications. Several preparation techniques have been employed in the recent past to synthesize MWCNTs-Fe3O4 NCs. Herein, we report the synthesis of Fe3O4 nanoparticles (NPs) decorated MWCNTs NC for heat transfer application. The NC was synthesized via co-precipitation method with a high-quality yield. The magnetic characterization of the as-synthesized NC exhibited saturation magnetization and was found to be 34.86 emu/g. Finally, magnetic nanofluids were prepared by dispersing different amounts of the as-synthesized NC into mineral oil, which is rarely reported. A similar to 50% enhancement in the thermal conductivity of the magnetic nanofluid was observed with loading of similar to 0.5 g/L of NC, which is better than the results reported so far for various nanofluids.
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