Highly ordered mesoporous α-Mn<sub>2</sub>O<sub>3</sub> active for catalytic decomposition of H<sub>2</sub>O<sub>2</sub> below room temperature
= Highly ordered mesoporous α-Mn<sub>2</sub>O<sub>3</sub> active for catalytic decomposition of H<sub>2</sub>O<sub>2</sub> below room temperature