摘要
50℃时,在无隔膜电解槽中采用电化学溶解铁金属8 h,制备了铁配合物Fe（OEt）2（acac）[acac-为乙酰丙酮基],通过红外光谱、拉曼光谱和核磁共振对配合物进行了表征.采用含Fe（OEt）2（acac）的电解液直接水解、干燥制备干凝胶,然后在450℃煅烧2 h,得到纳米Fe2O3粉体.通过透射电子显微镜（TEM）和X射线粉末衍射（XRD）对纳米Fe2O3进行表征.实验表明：前驱体中含有acac基团,可以很好地阻止水解与煅烧过程中发生团聚;所得干凝胶粒径在10 nm左右,纯度较高的纳米Fe2O3粉体粒径在20-30 nm.
Iron alkoxide complex Fe（OEt）2（acac） was directly synthesized by electrochemical dissolution of iron for 8 h at 50 ℃ in a cell without separating the cathode and anode spaces.The product was characterized by FTIR,Raman spectra and NMR.The xerogel was prepared by a direct sol-gel and dryness of the electrolyte solution,which was heated at 450 ℃ for 2 h to obtain the nano-Fe2O3 powder.FT-IR,XRD,and TEM were used to investigate the structure of nano-Fe2O3.The experiments show the iron complex is Fe（OEt）2（acac）,which contains acac group and can prevent hydrolysis and calcinations of the precursor from gathering.The xerogel of 10 nm and high purity nano-Fe2O3 of 20~30 nm were thus obtained.
出处
《中北大学学报（自然科学版）》
CAS
北大核心
2010年第3期265-268,共4页
Journal of North University of China(Natural Science Edition)
基金
安徽省自然科学基金重点资助项目(KJ2009A47
070414270X)
安徽省高等学校科研资助项目(KJ2009B266Z)
