Fe3O4/chitosan composite microspheres are prepared by adding a proper amount of TPP solution to chitosan solution dispered with Fe3O4 nanoparticles, or ionotropic gelation method.

• 然后采用离子凝胶反应法,在分散有纳米四氧化三铁的壳聚糖溶液中,加入适量的三聚磷酸钠溶液制得包覆有纳米四氧化三铁的壳聚糖复合微球载体。