Method for preparing trimanganese tetroxide with micro-nanostructure

The invention discloses a method for preparing trimanganese tetroxide with a micro-nanostructure. The method comprises the steps: adding a manganese powder to an alcohol-water mixed solution, taking an ammonium salt as a catalyst, heating to 40-115 DEG C, and carrying out a stirring reaction for a period of time to obtain white manganese hydroxide; and then introducing air to a manganese hydroxide solution for 2-10 h, washing and drying, and grinding to obtain the trimanganese tetroxide product with the micro-nanostructure. The reaction is carried out at low temperature and ordinary pressure, the preparation process is simple, and the cost is low. The prepared trimanganese tetroxide product has relatively high specific surface area. 本发明公开了种制备微纳米结构的四氧化三锰的方法。将锰粉加入到醇水混合溶液中，以铵盐作为催化剂，加热至40～115℃搅拌反应段时间后获得白色氢氧化锰；然后向氢氧化锰溶液中通入空气2～10h，洗涤烘干，研磨后得到所述具有微纳米结构的四氧化三锰产品。本发明反应在低温常压下进行，制备过程简单，成本低；所制备的四氧化三锰产品具有较高的比表面积。