Synthesis, characterization and optical property of shrimps-like nanostructures of MnO2 by hydrothermal route.

Hexagonal MnO2 shrimps like nanostructures have been successfully synthesized through a facile hydrothermal route at a temperature of 175 degrees C. The synthesized MnO2 nanostructures were characterized by the X-Ray Diffraction, Scanning Electron Microscopy, Energy Dispersive X-Ray spectroscopy, Transmission Electron Microscopy, High Resolution Transmission Electron Microscopy, Selected Area Electron Diffraction and UV-visible spectroscopy. UV-vis spectrophotometer was used to determine the absorption behaviour of shrimps like nanostructures. Direct optical band gap of 1.65 eV was acquired by using Davis-Mott model. The UV-visible spectrum exhibited the prominent absorption in visible region.