Fabrication of γ-MnO2/α-MnO2 hollow core/shell structures and their application to water treatment†
Abstract
In this work, we present a novel concept of structural design for the synthesis of a new type of core/shell structure comprising γ-MnO2 cores inside hollow α-MnO2 shells. The approach involves two main steps. First, MnCO3 microellipsoids were mixed directly with KMnO4 solution, which lead to a manganese oxide shell on the surface of the MnCO3. Then, thermal