花状形貌层状氧化锰的制备与表征

Synthesis and characterization of layered manganese oxide with flower-like morphology

在微酸性环境中高锰酸钾自身分解,利用低温水热法制备了花状形貌的Birnessite型层状氧化锰。探讨了温度及表面活性剂对其形貌的影响。采用XRD、SEM、N2吸附-脱附实验等手段对所合成的多孔材料进行了表征。花状形貌的层状氧化锰在1 mol/L的硫酸钠溶液中,扫描速度为5 mV/s时显示出较高的比电容,其比电容达到190 F/g。

Birnessite type layered manganese oxide with flower-like morphology was synthesized via low-temperature hydrothermal treatment in weak acidic KMnO4 solution.Effects of temperature and surfactants on the morphology and structure of the product were investigated.The as-prepared material was characterized by XRD, SEM, and N2 adsorption-desorption. Specific capacitance of layered manganese oxide with flower-like morphology reached as high as 190 F/g at a sweep rate of 5 mV/s in 1 mol/L Na2SO4 solution.