摘要
以KMnO4和MnSO4·H2O为原料,采用氧化还原沉淀法制备了KMn8O16粉体,运用XRD、ICP、SEM、TEM、IR、XPS等分析手段对其结构、大小、形貌及相关性质进行了表征。结果表明,所获粉体由大小均匀、平均尺寸约为230nm×25nm的棒状粒子组成;粉体中Mn主要存在形式是+4价,并含有一定数量的表面氧缺位,其较高的H2O2分解活性与它的表面微结构有关。
Using KMnO4 and MnSO4 as raw materials, the KMn8O16 was prepared by the oxidation-reduction precipitation method. The composition, size, morphology and properties of the powder were investigated by the means of XRD, SEM, TEM, FTIR, TGA and DTA. The results show that the powder has an average size of 230 nm × 25 nm, with bar-shape and good dispersity. Valence of Mn element was +4 charges. It is found that the powder has some surface crystal oxygen vacancies. Its high activity for H2O2 decomposition was relevant to it's surface structure.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2004年第6期769-770,773,共3页
Journal of Functional Materials
基金
国家自然科学基金资助项目(29831010)
陕西省自然科学基金资助项目(2002B21)
延安大学科研基金资助项目(YD2003 164)
关键词
KMn8O16
纳米棒
表面结构
催化活性
Catalyst activity
Characterization
Differential thermal analysis
Fourier transform infrared spectroscopy
Manganese compounds
Nanostructured materials
Scanning electron microscopy
Thermogravimetric analysis
X ray diffraction analysis
