| abstract |
The present invention provides functional particles capable of effectively adsorbing impurities in water treatment. The particles can be rapidly separated by use of magnetic force, and hence are excellent in workability. They are magnetic particles having surfaces modified with amphipathic groups loaded thereon. The amphipathic group comprises an ammonium or carboxylate group as a hydrophilic moiety and a hydrocarbon group as a hydrophobic moiety. The hydrophobic moiety has a function of adsorbing the impurities, and the hydrophilic moiety has a function of dispersing the particles stably in water. |