物理学报2012，Vol.61Issue(3)：124-128,5.
超声强化合成MgFe2O4纳米颗粒及其机理研究
Study of synthesis and mechanism of MgFe2O4 nanoparticles by ultrasonic intensify
摘要
Abstract
MgO nano-particles are prepared by ultrasonic cavitate,andα-Fe2O3 nano-particles are prepared by chemical precipitation method,then MgO andα-Fe2O3 are mixed in a beaker.After the ultrasonic dispersion for 2 h,MgO/α-Fe2O3 admixture is calcined at 400℃to synthesize MgFe2O4 nano-particles.TEM and XRD tests show that MgFe2O4 takes on a spinel structure and the particles sizes range from 20 to 30 nm.The theoretical analysis indicates that the ultrasonic cavitate effect enhances the reaction activity of raw material,augmentes specific surface area and the contact area of reactant,which can promote reaction rate,reduce reaction temperature, and make possible the chemical reaction that is difficult to complete in common condition.关键词
超声空化/固相合成/MgFe2O4/纳米颗粒Key words
ultrasonic cavitate/solid state synthesizing/MgFe2O4/nano-particles分类
化学化工引用本文复制引用
徐波,王树林,李生娟,李来强..超声强化合成MgFe2O4纳米颗粒及其机理研究[J].物理学报,2012,61(3):124-128,5.基金项目
上海市科委纳米号项 （）
上海理工大学博士启动费（批准号：1D-11-301-002）资助的课题 （）
