Preparation of different shaped α-Fe2O3 nanoparticles with large particles of iron oxide red

Abstract

Using anions (OH⁻, Cl⁻, SO₄²⁻, NO₃⁻ and CH₃COOH⁻) as structure and surface directing agents, α-Fe₂O₃ nanoparticles with quasi cube, parallel hexahedron, irregular sphere, nanosheet and hexagon shapes were successfully prepared by utilizing larger particles of iron oxide red. The results revealed that the shape of the α-Fe₂O₃ nanoparticles had a remarkable effect on the optical and magnetic properties.