Hydrothermal synthesis of γ-MnOOH nanowires and α-MnO_2 sea urchin-like clusters

摘要

γ-MnOOH nanowires and α-MnO_2 sea urchin-like clusters have been selectively synthesized in two oxidation systems via a facile hydrothermal route. The γ-MnOOH nanowires were obtained from MnSO_4 in the presence of H_2O_2 as an oxidizer in an alkaline solution, while the α-MnO_2 sea urchin-like clusters were formed from MnSO_4 in the presence of K_2Cr_2O_7 as an oxidizer in an acid solution.