Sreeremya, Thadathil S and Krishnan, Asha and Satapathy, Lakshmi Narayan and Ghosh, Swapankumar (2014) Facile synthetic strategy of oleophilic zirconia nanoparticles allows preparation of highly stable thermo-conductive coolant. RSC Advances, 4 (53). pp. 28020-28028. ISSN 2046-2069

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We report a simple one-step method of fabricating monodisperse zirconium oxide nanoparticles by decomposing a zirconium oleate complex in a high boiling organic solvent. The X-ray and transmission electron microscopy of nanocrystals indicated the formation of monoclinic zirconia. The surfactant capped zirconia nanoparticles produced excellent dispersions in oils. The suitability of the nanofluids in heat transport was carefully investigated by measuring suspension stability, thermal conductivity and viscosity as a function of temperature. The effect of particle loading and temperature on the thermal conductivity of the oil based nanofluids and other promising features indicated potential application of ZrO2 based nanofluids in the heat transport sector. A thermal conductivity enhancement of similar to 10.3% was achieved with 1.7 vol% zirconia nanoparticle loading at room temperature. The TC of the nanofluids was remarkably higher than the same predicted by Maxwell and Hamilton-Crosser models.

Item Type: Article
Subjects: Engineering Materials
Divisions: Advanced Clay & Traditional Ceramics
Depositing User: Bidhan Chaudhuri
Date Deposited: 19 Dec 2014 06:22
Last Modified: 19 Dec 2014 06:22

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