Abstract
Incorporation of iron oxide nanoparticles into Poly(diallydimethylammonium chloride) coated silica colloids is developed to produce novel nanocomposite. The structure is synthesized via layer-by-layer assembly with the entire process driven by electrostatic interaction. Dynamic light scattering and zeta potential measurements are employed to monitor the evolution of the nanocomposite from its constituent materials to full development of final structure. Morphology of the as-synthesized nanocomposite is observed by transmission electron microscopy. The magnetic responsiveness under low magnetic field gradient enables the aforementioned nanocomposite to be recovered for recycle purpose. The engineering application of this material is tested by taking Methylene Blue and Remazol Brilliant Blue R dyes as model system. The study reveals the efficiency and activity of the nanocomposite for dye removal during four consecutive runs.
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