Comparison of reductive nanoparticle preparation using plasma and ultrasound irradiation in aqueous solution

In this review, reductive nanoparticle preparation using plasma generated in aqueous solutions is described. The reduction mechanism of Au(III) ions and the plasma reaction sites are characterized in comparison with the sonochemical reaction sites generated by ultrasound irradiation to aqueous solutions. The contribution of organic additives such as surfactants, water-soluble polymers, and alcohols to the reduction is also addressed. (C) 2018 The Japan Society of Applied Physics