Synthesis of a Fe3O4@P4VP@metal–organic framework core–shell structure and studies of its aerobic oxidation reactivity

Abstract

A novel core–shell magnetic Fe₃O₄@P4VP(poly(4-vinylpyridine))@MIL-100(Fe) composite material has been successfully synthesized. The Fe₃O₄@P4VP core was initially prepared via polymerization of P4VP on the surface of pre-made Fe₃O₄ microspheres. The MIL-100(Fe) (MIL, Matérial Institut Lavoisier) metal–organic framework shell was then introduced through a layer by layer strategy. The obtained Fe₃O₄@P4VP@MIL-100(Fe) catalyst was applied in the selective oxidation of alcohols using molecular oxygen as the oxidant, and a variety of substrates were tolerated. The initial activity of the Fe₃O₄@P4VP@MIL-100(Fe) core–shell catalyst was maintained after ten reuses.