Facile Controlled Synthesis of Manganese Oxide Hierarchical Microspheres by Hydrothermal Method

摘要：

MnO2 hierarchical microsphere has been synthesized by a facile and direct hydrothermal reaction between KMnO4 and HCl without the aids of catalysts, surfactants or templates. The as-prepared microsphere, as characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) analysis and nitrogen adsorption and desorption, is in form of K0.27MnO2 (H2O )0.54, with a flower-like hierarchical microsphere structure and a BET surface area value of 52 m2/g. The morphology of the product can be simply tailed by controlled by reaction temperature or period and crystallinity can be modified by changing the concentrate of KMnO4. In general, excessive KMnO4 and low hydrothermal temperature are favor to forming flower-like hierarchical structure. Besides, the formation mechanisms of the hierarchical schemes are proposed.

关键词： manganese oxide hierarchical microspheres hydrothermal method

作者: Dongyan Li Yunfa Chen

作者单位: State Key Laboratory of Multi-phase Complex System, Institute of Process Engineering,Chinese Academy State Key Laboratory of Multi-phase Complex System, Institute of Process Engineering, Chinese Academ

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 107-115

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）