Highly Monodispersed Hematite Cubes for Water Remediation

Hematite (α-Fe2O3) is the most stable, non-toxic, corrosion resistant iron oxide under ambientconditions. Especially for the applications like photocatalytic degradation of organic effluentswhich rely on factors like band gap and stability of the photocatalyst in aqueous solution,hematite demonstrates exceptional capabilities. It is an n-type semiconductor having band gapof 1.8-2.2 eV which allows to absorb ultraviolet light as well as majority of visible light duringphotocatalysis [1]. Herein, we report a facile ultrasound-hydrothermal route for preparing theuniform colloidal hematite cubes as well as their application in dye degradation.