Ultrasonic assisted synthesis of palladium-nickel/iron oxide core-shell nanoalloys as effective catalyst for Suzuki-Miyaura and p-nitrophenol reduction reactions.

In this study, ultrasonic assisted synthesis of Pd-Ni/FeO core-shell nanoalloys is reported. Unique reaction condition was prepared by ultrasonic irradiation, releasing the stored energy in the collapsed bubbles and heats the bubble contents that leads to Pd(II) and Ni(II) reduction. Co-precipitation method was applied for the synthesis of FeO nanoparticles (NPs). Immobilized solution was produced by sonicating the aqueous mixture of FeO and mercaptosuccinic acid to obtain Pd-Ni alloys on FeO magnetic NP cores. The catalytic activity of the synthesized Pd-Ni/FeO core-shells was investigated in the Suzuki-Miyaura CC coupling reaction and 4-nitrophenol reduction, which exhibited a high catalytic activity in both reactions. These magnetic NPs can be separated from the reaction mixture by external magnetic field. This strategy is simple, economical and promising for industrial applications.