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在50mL圆底烧瓶中,通过乙二醇溶液制备了铁配合物Fe(OCH2CH2OH)3,将溶液直接水解制备出纳米Fe2O3粉体。通过红外光谱(FT-IR)和核磁共振对产物Fe(OCH2CH2OH)3进行表征,通过X射线粉末衍射(XRD)和透射电子显微镜(TEM)对纳米Fe2O3进行表征。实验表明,前驱体中含有OCH2CH2OH基团,可以有效克服水解与煅烧过程中的团聚现象,经450℃煅烧2h得到的纳米Fe2O3粉体颗粒分散较好,粒径为20～35nm。
In a 50mL round-bottomed flask, iron complex Fe (OCH2CH2OH) 3 was prepared by ethylene glycol solution, and the solution was directly hydrolyzed to prepare nano-Fe2O3 powder. The product Fe (OCH2CH2OH) 3 was characterized by FT-IR and NMR, and characterized by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM). Experiments show that the precursor containing OCH2CH2OH group can effectively overcome the hydrolysis and calcination process agglomeration, calcined at 450 ℃ 2h obtained nano-Fe2O3 powder particles dispersed well, the particle size of 20 ~ 35nm.