Abstract
Hydroxyapatite (HAp) is an inorganic material that can be used as an adsorption material. Here we report a novel HAp-based hollow porous microsphere, in which Fe3O4 nanoparticles are uniformly embedded in the HAp microsphere shell. The specific surface area is 98.6 m2/g with an average pore size of 11.4 nm. The microsphere has been demonstrated to be a high-efficient absorbent for copper ion. Owing to the superparamagnetic property of Fe3O4 nanoparticles, the microspheres can be well dispersed in water and effectively segregated by magnet. Therefore, HAp-Fe3O4 hollow microsphere is a promising candidate for copper ion treatment.
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