RECYCLABLE SUPERPARAMAGNETIC NANOPARTICLES FOR WATER TREATMENT AND METHOD FOR PRODUCING THE SAME

摘要

PURPOSE: A super-paramagnetic nanoparticle for water treatment is provided to synthesize an excellent super-paramagnetic nanoparticle with excellent dispersity in water. CONSTITUTION: A super-paramagnetic nanoparticle for water treatment comprises super-paramagnetic nanocrystal under 20 nm or less and a ligand material. The ligand material is a molecule which comprises 3-5 carboxy groups and is combined to the surface of the super-paramagnetic nanocrystal. The super-paramagnetic nanocrystal is one or more selected fromγ-Fe2O3, MnFe2O3, Fe3O4, CoFe2O3, and NiFe2O3. The molecule which comprises 3-5 carboxy groups and is combined to the surface of the super-paramagnetic nanocrystal is one or more selected from sodium citrate, EDTA, and ETPA.