摘要
以尿素铁配合物和三乙二醇为原料,采用溶剂热法-原位氧化法制备了水分散性γ-Fe2O3纳米粒子.通过X射线衍射(XRD)、差热-热重分析(DTA-TG)、透射电子显微镜(TEM)、N2吸附-脱附(BET)、孔径分布(BJH)和磁性测试(VSM)等分析手段,对样品进行了表征.结果表明,得到的样品为具有介孔结构的纯γ-Fe2O3纳米粒子,在室温下为超顺磁性,且具有较高的饱和磁矩和很好的水分散稳定性.
In this work,water dispersible γ-Fe2 O 3 nanoparticles were successfully prepared by solvo-thermal methed-oxidation method,with Fe-ruea complex and triethylene glycol as raw materials.The product was characterized by means of X-ray powder diffraction （XRD）,differential thermogravimetric analysis（DTA-TG）,transmission electron microscope（TEM）,N2 adsorption-desorption（BET）,pore size distribution （BJH ） and magnetic measurements （VSM ）.The results show that the pure γ-Fe2 O 3 nanoparticles with porous structure can be obtained by this method.The synthesized γ-Fe2 O 3 nanoparticles possess superparamagnetic properties with a high saturation magnetization at room temperature and good dispersibility in water.
出处
《内蒙古师范大学学报（自然科学汉文版）》
CAS
北大核心
2015年第2期214-219,共6页
Journal of Inner Mongolia Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(21267016)
关键词
γ-Fe2O3纳米粒子
溶剂热法
原位氧化法
超顺磁性
水分散性
γ-Fe2 O 3 nanoparticles
solvothermal methed
in-stu oxidation method
superparamag-netism
water dispersible
