摘要
以乙酸镁和草酸为原料,用微波固相法制备了立方晶系结构的纳米氧化镁。TGA对前驱体的热分析表明微波处理能降低分解温度。采用XRD、TEM和IR对不同制备条件下MgO的晶型、晶粒尺寸、以及表观形貌等进行了表征,结果表明:焙烧温度、时间、微波加热时间对粒径影响较大;在600℃下焙烧3h制备的MgO平均晶粒尺寸为14.33nm。
The MgO nano-particles with a cubic structure were prepared by microwave-assisted solid-state method, with Mg（AC）2 · 4H2O and H2C4O2 · 2H2O as the starting materials. The thermogravimetric analysis （TGA） of the MgO precursor indicates that microwave can reduce the decomposition temperature. The crystal form, particle size and morphology of prepared samples under different conditions were studied by X-ray diffraction （XRD）, transmission electron microscopy （TEM） and infrared spectroscopy （IR）. The characterizations show that particle size is greatly influenced by calcinations temperature, calcinations time and microwave heat time. The MgO particles with crystallite mean size of 14.33nm are obtained after calcination at 600℃ for 3h.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2006年第12期1978-1981,1984,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(20203012)
广东省科技计划资助项目(2004B33401003
2005B10201053)
广东省自然科学基金团队资助项目(4205301)
关键词
微波固相法
MGO
纳米颗粒
microwave-assisted solid-state method, MgO
nano-particles
