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A Kind of Nanofluid Consisting of Surface-Functionalized Nanoparticles

Author(s): Yang Xuefei | Liu Zhen-hua

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 5;
Issue: 8;
Start page: 1324;
Date: 2010;
Original page

Keywords: Nanofluid | Surface functionalization | Nanoparticle | Heat transfer | Phase change

Abstract A method of surface functionalization of silica nanoparticles was used to prepare a kind of stable nanofluid. The functionalization was achieved by grafting silanes directly to the surface of silica nanoparticles in silica solutions (both a commercial solution and a self-made silica solution were used). The functionalized nanoparticles were used to make nanofluids, in which well-dispersed nanoparticles can keep good stability. One of the unique characteristics of the nanofluids is that no deposition layer forms on the heated surface after a pool boiling process. The nanofluids have applicable prospect in thermal engineering fields with the phase-change heat transfer.
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