| 초록 |
Manganese dioxide (MnO2) nanorods and nanotubes were synthesized via the Galvanic replacement reaction. To make the manganese dioxide nanorods and nanotubes, precursor of potassium permanganate was added to the sacrificing silver rods suspension that prepared by the polyol method. Due to the standard reduction potential difference between silver and mangan ions, the solid silver was replaced by the MnO2forming Ag/MnO2 core-shell nanorods. Furthermore, MnO2 nanotubes were prepared by increasing the concentration of the potassium permanganate. Investigation on the properties of the MnO2 products revealed that the crystalline structure and the UV-vis absorbance of the silver rod was reduced as the MnO2 reduction proceeded. This MnO2 nanorods also showed improved electrical property which is applicable to the supercapacitor. |
