通过在多元醇介质中回流制备了Al2O3的前驱体纳米颗粒.傅里叶变换红外光谱(FT-IR)结果说明前驱体制备过程中的反应机理为强制水解过程.相应的X射线衍射(XRD)以及热重-差热分析(TG-DTA)研究表明前驱体制备α-Al2O3的合适煅烧温度为1100℃.透射电镜(TEM)结果表明通过该方法可制备得到颗粒尺寸细小的前驱体纳米颗粒，因而将前驱体在1100℃煅烧2h后可得到颗粒尺寸细小的α-Al2O3纳米颗粒.% The precursor of Al2O3 nanoparticles has been prepared by reflux in ethylene glycol. The Fourier transform infrared (FT-IR) spectroscopy results indicate that the reaction mechanism of the precursor is a forced hydrolysis process. Both the X-ray diffraction (XRD) and thermogravimetry-differential thermal analysis (TG-DTA) on the obtained precursor prove that the appropriate calcination temperature forα-Al2O3 is 1 100 ℃. The TEM observations illustrate that precursor nanoparticles with small particle size have been prepared by reflux in ethylene glycol and henceα-Al2O3 nanoparticles with small particle size have been obtained after calcining the precursorat1100 ℃for2h.
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