摘要
研究了一种制备Mn3O4的方法，以廉价的硫酸锰为原料，通过控制反应条件制得了高纯度的纳米级Mn3O4。实验结果表明，反应的最佳条件为：加适量乙醇作为分散剂；控制氨水滴加速度使反应时间在2h以上；前驱物在200℃煅烧2h。采用X射线衍射（XRD）、透射电子显微镜（TEM）等手段对产物进行了表征，产物纯度为100％，粒径约为20nm。
A method of preparing Mn3O4 is studied. Using cheap MnSO4 as material, nano-Mn3O4 is gained with high purity through controlling the reaction conditions. The result shows that the optimal condition is as follows： ethanol is added as dispersant; more than 2h is required by controlling the speed of ammonia; the precursor is calcined at 200℃. The product is characterized by X-ray diffraction（XRD） and transmission electron microscopy（TEM）, with purity of 100% and particle size around 20nm.
关键词
MN3O4
纳米颗粒
水解氧化法
分散剂
Mn3O4, nanoparticles, hydrolyzing-oxidizing method, dispersant
