Monodisperse porous pod-like hematite: Hydrothermal formation, optical absorbance, and magnetic properties

Abstract: Uniform monodisperse porous silk-worm pod-like hematite (α-Fe2O3) superstructures were efficiently obtained via a facile hydrothermal route. This was realized via the co-precipitation of FeCl3 and NaOH solutions at room temperature in the presence of H3BO3, followed by a mild hydrothermal treatment (150°C, 12.0h). The UV–vis band is mainly located in the far-UV region, with one intense broadband from 260 to 290nm. The porous pod-like superstructures exhibit special magnetic properties with a remnant magnetization of 0.22emug−1 and a high coercivity of 3315.5Oe at room temperature, indicating the as-obtained porous pod-like superstructures of a promising candidate for gas sensors, lithium ion battery, photocatalysis, and water treatment. [Copyright &y& Elsevier]