Multifunctional magnetic nanocomposites: separation, photodecomposition and Raman detection

Abstract

We describe a three-step synthesis of Fe₃O₄/inositol hexakisphosphate (IP₆)/Au nanocomposites in water. Considering the magnetic properties of Fe₃O₄, the interactions of IP₆ with both organic molecules and inorganic ions, the photocatalysis by Au nanoparticles of organic molecules, and the surface enhancement Raman scattering activity of the Au nanoparticles, the versatile applications of Fe₃O₄/IP₆/Au nanocomposites are investigated. Fe₃O₄/IP₆/Au nanocomposites exhibit efficient magnetic separation, sensitive Raman detection, and photodecomposition of organic molecules as well as a great capability to remove inorganic ions from water.