Silver colloid nanoparticles: Ultrasound-assisted synthesis, electrical and rheological properties

Abstract

We report the synthesis of silver nanoparticles using both conventional and ultrasound assisted reduction method. The subsequent studies on the electrical conductivity and rheological properties of nanofluids of silver nanoparticles in distilled water and ethylene glycol as base fluids at different volume fractions and temperatures were done, respectively. An enhancement in viscosity by 26.4% was achieved at 20 °C with ethylene glycol as a base fluid at volume fraction of silver nanoparticles of 5%. 3975% increase in the electrical conductivity of silver-distilled water nanaofluid was observed for volume fraction of %2 at 50 °C. Silver nanoparticles (NPs) were prepared and characterized. The electrical conductivity and rheological properties of nanofluids of Ag NPs in distilled water (DW) and ethylene glycol (EG) were measured, respectively. 26.4% enhancement in viscosity of EG at 20 °C and 3975% increase in electrical conductivity of DW at 50 °C were achieved when the volume fraction of Ag NPs was 5% and 2%, respectively. ► Synthesis of silver nanoparticles using ultrasound-assisted reduction method ► Measuring viscosity of nanofluids of sliver nanoparticles in ethylene glycol ► Observing 3975% increase in electrical conductivity of silver-distilled water