Patent ID: 7947191
Filing Date: 2011-05-24
Classification: B01J,B82Y,C01G,C01P,C07C,Y02P,Y10S

Abstract:
1. Transition metals-magnetic iron oxides nanocomposite materials consisting of a composite of transition metals or alloys thereof nanoparticles having a diameter ranging from 0.7 to 5 nm and magnetic iron oxides nanoparticles having a diameter ranging from 5 to 50 nm, the total content of the transition metals or the alloys thereof in the nanocomposite materials ranging from 0.1 to 30 wt. %, the magnetic iron oxides including γ-Fe 2 O 3 and Fe 3 O 4 , the composite made from part reduction of the γ-Fe 2 O 3 and part oxidation of Fe 3 O 4 .