86. Tuning the Thermal Properties of Aqueous Nanofluids by Taking Advantage of Size-customized Clusters of Iron Oxide Nanoparticles

Amir Elsaidy, Javier P. Vallejo, Verónica Salgueiriño and Luis Lugo

Journal of Molecular Liquids (2021), 344, 117727 (DOI: 10.1016/j.molliq.2021.117727).

The thermal conductivity of aqueous nanofluids containing clusters of iron oxide (Fe3O4 / γ-Fe2O3) nanoparticles has been investigated experimentally, with the aim of assessing the role of a controlled aggregation of nanoparticles in these final nanofluids. The clusters of nanoparticles were synthesized by a solvothermal method and fully characterized by TEM, XRD and Raman spectroscopy. The rheological behavior of the optimal nanofluids was studied by rotational rheometry, revealing enhancements in the thermal conductivity, temperature and cluster size dependent.

51 JMolLiq