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.
<Abstrcat> SnO_2 nanodendritc were successfully prepared by pressure-thermalcrystallization method using SnCl_4·5H_2O 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 SnO_2 was simply proposed.
出处
《华中师范大学学报（自然科学版）》
CAS
CSCD
2005年第2期228-231,共4页
Journal of Central China Normal University：Natural Sciences
基金
国家自然科学基金资助项目(20207002).
关键词
氧化锡
纳米材料
枝蔓晶
压力-热晶法
SnO_2
nanometer
dendrites
pressure-thermalcrystallization method
