The synthesis of α-MnO₂ nanorods using hydrothermal homogeneous precipitation

Abstract Clear and uniform one-dimensional (1D) α-MnO 2 nanorods with diameters of 30–50 nm were prepared by hydrothermal treatment of homogeneous solution of hydrated MnSO 4 and KMnO 4 with a little H 2 O 2. Upon control of hydrothermal conditions (reaction temperature and duration time), an excellent crystalline phase of MnO 2 was obtained and its morphology was investigated. The crystal structures of as-synthesized MnO 2 products have been characterized by x-ray diffraction (XRD). The morphology of the product was examined by scanning electron microscopy (SEM) and the chemical composition was analyzed using energy dispersive spectroscopy (EDS) along with SEM. The Mn concentration was determined by the chemical titration method.