The synthesis of α-MnO2 nanorods using hydrothermal homogeneous precipitation

Aye Aye Hlaing and Phyu Phyu Win

Abstract

Clear and uniform one-dimensional (1D) α-MnO₂ nanorods with diameters of 30–50 nm were prepared by hydrothermal treatment of homogeneous solution of hydrated MnSO₄ and KMnO₄ with a little H₂O₂. Upon control of hydrothermal conditions (reaction temperature and duration time), an excellent crystalline phase of MnO₂ was obtained and its morphology was investigated. The crystal structures of as-synthesized MnO₂ 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