“…Manganese carbonate (MnCO 3 ) materials have attracted the fascination of researchers because they are cheap, abundant, environmentally friendly and possess intriguing properties that are widely used in promising systems for biomedical applications, such as biosensors, bioreactors, and drug delivery devices, 19 and in other applications such as potential electrode materials for super capacitors, 20 or as catalysts for the Fischer-Tropsch reaction. 21,22 Furthermore, MnCO 3 could also be used as a typical precursor for manganese oxides, which are of considerable importance due to their potential applications in catalysis, 23,24 rechargeable batteries, [25][26][27] or as a new template to prepare various hierarchical materials. 28,29 To date, many endeavors have been devoted to investigate the inuence of the doping elements on the morphologies 17 and the corresponding improvement in the functional behavior of doped metal oxides.…”