Rose-like Pd–Fe3O4 hybrid nanocomposite-supported Au nanocatalysts for tandem synthesis of 2-phenylindoles

Abstract

A facile synthesis of rose-like Pd–Fe₃O₄ nanocomposites via controlled thermal decomposition of Fe(CO)₅ and reduction of Pd(OAc)₂, followed by the immobilization of Au nanoparticles (NPs) onto the Pd–Fe₃O₄ supports, is reported. The morphology of these hybrid nanostructures could be easily controlled by varying the amount of Fe(CO)₅ and the reaction temperature. Moreover, the synthesized Au/Pd–Fe₃O₄ catalyst exhibited high catalytic activity for the tandem synthesis of 2-phenylindoles and demonstrated magnetic recyclability.