【摘要】 以SnCl4·5H2O等为主要原料,在160～200℃时成功地制备出分散性好、晶型完整、结构稳定的四方晶型纳米氧化锡枝蔓晶,并用透射电子显微镜、电子衍射、X射线衍射等技术手段对氧化锡纳米晶的结构和形貌进行了表征.结果表明:制备得到的SnO2微晶具有枝蔓状外观结构,其躯干长为3～5μm,直径为100～200nm,枝节长为5～8μm,直径为10～40nm.同时对其可能形成机理进行了探讨,初步认为其形成过程是一个成核并延伸生长的过程.更多还原

【Abstract】 <Abstrcat> SnO₂ nanodendritc were successfully prepared by pressure-thermalcrystallization method using SnCl₄·5H₂O as raw material. Microstructure and morphology of the prepared products had been characterized by means of transmission electron microscopy（TEM）,selected area electron diffraction（SAED） and X ray diffraction（XRD）. The results showed the particle has dendritc-like apparent structure. The dendrites have trunks with lengths of 3～5 μm and diameters of 100～200 nm. The lengths and diameters of their branches are about 5～8 μm and 10～40 nm, respectively. The mechanism of the formation of SnO₂ was simply proposed.更多还原