Mechanical Dispersion of Nanoparticles and Its Effect on the Specific Heat Capacity of Impure Binary Nitrate Salt Mixtures

Nanomaterials

Mathieu Lasfargues¹  Qiao Geng²  Hui Cao²  Yulong Ding² 

[1] School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK; E-Mail:;School of Chemical Engineering, University of Birmingham, Birmingham B15 2TT, UK; E-Mails:

关键词: nanoparticles;    molten salt;    energy storage;   

DOI  :  10.3390/nano5031136

来源: mdpi

【 摘 要 】

In this study, the effect of nanoparticle concentration was tested for both CuO and TiO₂ in eutectic mixture of sodium and potassium nitrate. Results showed an enhancement in specific heat capacity (C_p) for both types of nanoparticles (+10.48% at 440 °C for 0.1 wt % CuO and +4.95% at 440 °C for 0.5 wt % TiO₂) but the behavior toward a rise in concentration was different with CuO displaying its highest enhancement at the lowest concentration whilst TiO₂ showed no concentration dependence for three of the four different concentrations tested. The production of cluster of nanoparticles was visible in CuO but not in TiO₂. This formation of nanostructure in molten salt might promote the enhancement in C_p. However, the size and shape of these structures will most likely impact the energy density of the molten salt.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.