MnO_2纳米棒的水热制备及表征

Hydrothermal Preparation and Characterization of MnO_2 Nanorods

以MnCl_2·4H_2O和KMnO_4为主要反应物,通过简单的水热方法合成了MnO_2纳米棒,所得产物用粉末X射线衍射(XRD)、扫描电镜(SEM)进行了表征。在水热反应过程中,反应时间和反应浓度对纳米棒的形成有重要的作用,在MnO_2纳米棒催化过氧化氢降解亚甲基蓝过程中表明其具有催化性能。

MnO2 nanorods can be hydrothermally synthesized by using MnCl2· 4H2O and KMnO4 as main materials. The as-- synthesized samples are characterized by X-- ray powder diffraction （XRD）, scanning electron microscopy （SEM）. The effects of reaction temperature and reaction concentration on the products of MnO2 are investigated. The result shows that the reaction temperature and reaction concentration are the main factors leading to the morphology of MnO2. In addition, further experiments show that the as--prepared MnO2 nanorods have catalytic effect on the oxidation and decomposition of the methylene blue （MB） dye with H2O2 .