Formation of alpha-Fe2O3/FeOOH nanostructures with various morphologies by a hydrothermal route and their photocatalytic properties

摘要

A series of alpha-Fe2O3/FeOOH nanostructures with different morphologies have Successfully been synthesized based on K-4[Fe(CN)(6)] at 140 degrees C by a novel hydrothermal method. The morphology and phase of alpha-Fe2O3/FeOOH can be controlled by adjusting the reaction time. UV-vis absorption spectrum, X-ray powder diffraction, and transmission electron microscopy analyses were used to characterize the resulting products. A detailed, rational mechanism is proposed for the formation of alpha-Fe2O3/FeOOH nanostructures. The potential applications of the as-synthesized alpha-Fe2O3/FeOOH nanoparticles with different morphologies on photocatalytic decomposition of salicylic acid were also investigated.