Analysis of Nanoscale Iron Oxide Morphology

摘要

Two different forms of nano- scale Fe_2O_3 were prepared by the hydrother-mal method using Fe(NO_3)_3-9H_2O as the starting material, ethylenediamine and ethylene glycol methyl ether as surfactants. The structure, surface morphology, and composition of nano-scale Fe_2O_3 samples were analyzed by XRD and SEM/EDS. The results show that the sample has two forms, one nano-Fe_2O_3 form is rod-shaped, and the rod-like structure is hexagonal columnar, the particles are closely arranged in disorder; the other nano-Fe_2O_3 is spherical, and there are clusters between particles. The formation mechanism of the nano-oxidized iron was analyzed.