【摘要】 目的探讨以过硫酸铵、硫酸锰、硫酸为原料,采用微波加热方法合成刺球形二氧化锰的最佳条件。方法通过一系列平行试验,改变微波频率、微波时间、pH值等,制备出纳米级二氧化锰。结果采用扫描电子显微镜对产物进行观察,产物有非常规整的刺球状结构。结论适当升高反应温度、延长反应时间、增大溶液酸度更有利于二氧化锰刺球的合成。更多还原

【Abstract】 Objective Manganese dioxide(MnO2)assembled in nano spherical shaped morphology has been successfully synthesized by a straightforward microwave technique in a very short duration using manganese sulfate(MnSO4)and ammonium peroxydisulfate(NH4)2S2O8)as reactants.Methods The effects of the terminal pH values,time and temperature of microwave irradiation on the crystal phase,morphology and particle size distribution of the obtained MnO2 nanospherical were investigated.ResultsThe synthesized MnO2 was characterized by scanning electron microscopy(SEM).The results revealed that the MnO2 has good spherical shaped morphology.Conclutions It could be beneficial for synthesis of spherical shaped MnO2 to increase reaction temperature,reaction time and the acidity appropriately.更多还原