In this paper, we reported the preparation of superparamagnetic macroporous Fe 3 O 4 and its derivates using organic colloidal crystal as templates and their catalytic activity for chemical vapor deposition. The poly(styrene-methyl methacrylate-acrylic acid) (P(St-MMA-AA)) copolymer colloids were deposited in an orderly manner onto the silicon surface, together with the infiltration of the Fe 3 O 4 nanoparticles into the interspaces of the colloids. The formed hybrid colloidal crystal subsequently was immersed in tetrahydrofuran to remove the organic components fully to obtain a macroporous Fe 3 O 4 framework with three-dimensional porous structure. The macroporous Fe 3 O 4 exhibits superparamagnetism due to the magnetic coupling of Fe 3 O 4 nanoparticles in the structure. Macroporous Fe 2 O 3 and Fe materials were obtained based on oxidization and reduction of the macroporous Fe 3 O 4 , respectively. It was demonstrated that the macroporous Fe 3 O 4 materials possess catalytic activity and can induce growth of carbon nanotubes.