Journal
HEAT AND MASS TRANSFER
Volume -, Issue -, Pages -Publisher
SPRINGER
DOI: 10.1007/s00231-022-03324-w
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Funding
- FCT, Portugal [PTDC/NAN-MAT/29989/2017]
- FCT, Portugal through IDMEC, under LAETA [UIDB/50022/2020]
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Ionanocolloids (INCs), suspensions of nanoparticles (NPs) in ionic liquids (ILs), have become attractive choices in thermal energy areas due to their potential applications and green solvent characteristics. However, the low stability and high viscosity of INCs hinder their industrial application.
In the search for the optimization of heat transfer systems, ionanocolloids (INCs) which are suspensions of nanoparticles (NPs) in ionic liquids (ILs), have revealed as very attractive choices due to their increasingly potential applications in thermal energy areas. Besides a high degree of versatility and enhanced thermophysical properties, these new class of fluids are considered as green solvents due to their negligible vapor pressure, non-flammability and recyclability. Despite the great advantages of using these INCs, their industrial application is still a challenge due to low stability and high viscosity issues attributed to them. In this work, different INCs were prepared by two-step method, using 1-ethyl-3-methylimidazolium dicyanamide ([C(2)mim][DCA]) mixed with deionized water (DW) as base fluids and 3 different NPs: Titanium(IV) Oxide, Silicon Oxide and Aluminum Oxide. Stability was evaluated through visual inspection. Viscosity of stable INCs was determined over different temperatures and shear rates, and electrical conductivity was measured.
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