Synthesis of Highly Concentrated Ag Nanoparticles in a Heterogeneous Solid-Liquid System under Ultrasonic Irradiation

Ag nanoparticles were synthesized at a high concentration (about 10–100 times higher than traditional process) without condensation, by ultrasonic irradiation of a heterogeneous solid-liquid system. This process offers reduced costs of condensation of the prepared solution and waste liquid treatment, compared to the traditional process. Besides, Ag conductive films were prepared with a relatively good electrical resistivity of 3.30 μΩ cm after brief, low temperature sintering.