Phase transfer based synthesis and thermophysical properties of Au/Therminol VP-1 nanofluids

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Abstract

This paper reports a phase transfer based wet chemistry method for the preparation of Au/VP-1 nanofluids. The method involves the transfer of AuCl4− ions from water to the base liquid Therminol VP-1, followed by the reduction of AuCl4− ions using NaBH4. The prepared nanofluids are characterized for their thermophysical properties and stability. The results show that the mass concentration of Au particles has a significant effect on the stability of Au/VP-1 nanofluids. An increase in the Au concentration results in a higher extent of agglomeration among the particles, leading to a decrease in the nanofluid stability. The results also show that the introduction of 0.005–0.05% Au nanoparticles enhances the thermal conductivity of the fluids by up to 6.5%, whereas the viscosity increase is minimal.

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Wang, C., Yang, J., & Ding, Y. (2013). Phase transfer based synthesis and thermophysical properties of Au/Therminol VP-1 nanofluids. Progress in Natural Science: Materials International, 23(3), 338–342. https://doi.org/10.1016/j.pnsc.2013.04.006

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