微乳液介质中片状纳米草酸钆的合成与表征  

Synthesis and characterization of plate-like of Gd_2(C_2O_4)_3 with nano-scale in the media of reverse microemulsions

作　　者：康桃英[1,2] 张文钊[3] 侯鲲[1] 高子伟[1] 

机构地区：[1]应用表面与胶体化学教育部重点实验室,陕西师范大学化学与材料科学学院,陕西西安710062 [2]青海大学化学工程学院,青海西宁810016 [3]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《陕西师范大学学报（自然科学版）》2011年第6期41-44,共4页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(20771071)

摘　　要：以Tween—60/正己酸/正辛烷/硝酸钆(Gd(NO3)3)水溶液(草酸钾(K2C2O4)水溶液)所形成的反相微乳液体系为反应介质,并辅以溶剂热法合成了片状纳米草酸钆(Gd2(C2O43)).考察了水与Tween—60的摩尔比(ω)、Gd(NO3)3浓度和反应温度对纳米Gd2(C2O4)3形貌和尺寸的影响,并采用X射线衍射仪(XRD)和透射电子显微镜(TEM)对纳米Gd2(C2O4)3的形貌和尺寸进行了表征.结果表明,片状纳米Gd2(C2O4)3的尺寸随着水核比的增大、反应温度的升高而增大,随着Gd(NO3)3浓度的增大而减小.Plate-like gadolinium oxalate（Gd2（C2O4）3） with nano-scale was synthesized in a reverse microemulsion system,formed by Tween—60,hexanoic acid,n-octane and Gd（NO3）3 aqueous solution（K2C2O4 aqueous solution）,by association with solvothermal method.The effects of the molar ratio of water to the Tween—60,the concentration of Gd（NO3）3 and reaction temperature on the morphology and the size of Gd2（C2O4）3 were studied.The morphology and size of Gd2（C2O4）3 were characterized by XRD and TEM,respectively.The experimental results showed that the size of the plate-like of Gd2（C2O4）3 increased with the increase in the molar ratio of water and the temperature,howerer,the size of Gd2（C2O4）3 decreased with the increase of the concentration of Gd（NO3）3.

关 键 词：微乳液 溶剂热法 纳米草酸钆 合成 表征 

分 类 号：O648[理学—物理化学]