Rapid one-pot synthesis of magnetically separable Fe3O4–Pd nanocatalysts: a highly reusable catalyst for the Suzuki–Miyaura coupling reaction

Abstract

Heterogeneous catalysts comprising noble metals and magnetic materials allow a straightforward separation from a reaction using an external magnet and are recovered easily. In this study, we synthesized magnetic Fe₃O₄–Pd_n hybrid heterogeneous catalysts via a rapid one-pot aqueous-phase method. The synthesized Fe₃O₄–Pd NPs dispersed well with small size (∼50 nm), maintaining high magnetic responsiveness, and showed high reactivity and reusability for the Suzuki–Miyaura coupling reaction between aryl halides and phenylboronic acid. The synthesized Fe₃O₄–Pd₅₀ catalyst could be recycled at least ten times with no significant loss of catalytic activity by external magnet separation.