高等学校化学学报

高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (05): 1036.doi: 10.3969/j.issn.0251-0790.2012.05.031

• 物理化学 • 上一篇    下一篇

反相微乳液介质中Nd2(CO3)3·8H2 O的可控合成

朱文庆1, 邢西萍1, 张超1, 袁煜昆1, 陈亚芍2   

  1. 1. 西安工程大学环境与化学工程学院, 西安 710048;
    2. 陕西师范大学应用表面与胶体化学教育部重点实验室, 化学与材料科学学院, 西安 710062
  • 收稿日期:2011-06-09 出版日期:2012-05-10 发布日期:2012-05-10
  • 作者简介:朱文庆, 男, 博士, 副教授, 主要从事稀土材料的合成与应用研究. E-mail: wqzhu2008@163.com
  • 基金资助:

    陕西省科技攻关项目(批准号: 2011K07-23), 陕西省教育厅专项科研计划项目(批准号: 11JK0566)和应用表面与胶体化学教育部重点实验室开放基金(批准号: 201003)和西安工程大学博士基金(批准号: BS1010)资助.

Controlled Synthesis of Nd2(CO3)3?8H2O Particles in the Media of Reverse Microemulsions

ZHU Wen-Qing1, XING Xi-Ping1, ZHANG Chao1, YUAN Yu-Kun1, CHEN Ya-Shao2   

  1. 1. College of Environmental and Chemical Engineering, Xian Polytechnic University, Xi'an 710048, China;
    2. Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Materials Science, Shaanxi Normal University, Xian 710062, China
  • Received:2011-06-09 Online:2012-05-10 Published:2012-05-10

PDF (PC)

摘要： 以十六烷基三甲基溴化铵(CTAB)/正丁醇/正辛烷/硝酸钕[Nd(NO3)3]溶液(碳酸钠溶液)所组成的反相微乳液为反应介质, 采用微乳液溶剂热法合成了Nd2(CO3)3·8H2O, 并考察了水/核比([H2O]/[CTAB])和Nd(NO3)3的浓度对其形貌和尺寸的影响. 利用X射线衍射(XRD)、 热分析(DSC-TGA)、 扫描电子显微镜(SEM)和透射电子显微镜(TEM)等对Nd2(CO3)3·8H2O的晶型、 形貌及尺寸进行了表征, 并提出了不同形貌Nd2(CO3)3·8H2O形成的可能机理. 结果表明, 随着水/核比的增大, Nd2(CO3)3·8H2O的形貌从多面体变成鱼尾状, 再变成针状; 随着Nd(NO3)3浓度的增大, 针状Nd2(CO3)3·8H2O的尺寸逐渐减小.

关键词: 反相微乳液, 微乳液溶剂热法, Nd2(CO3)3·8H2O, 可控合成

Abstract: Nd2(CO3)3?8H2O particles were prepared in water/oil(W/O) reverse microemulsion composed of cetyltrimethylammonium bromide(CTAB), n-butanol, n-octane, Nd(NO3)3?6H2O aqueous solution, Na2CO3 aqueous solution by the microemulsion-assisted solvothermal method. The influences of the molar ratio of water to CTAB and the concentration of Nd(NO3)3 on the morphologies and sizes of Nd2(CO3)3?8H2O particles were studied. The structures, morphologies and sizes of the nanoparticles were characterized by X-ray powder diffraction(XRD), differential scanning calorimetry and thermal gravimetric analysis(DSC-TGA), scanning electron microscope(SEM) and transmission electron microscope(TEM). The possible formation mechanism of the morphologies structure of Nd2(CO3)3?8H2O was proposed. The Nd2(CO3)3 particles with polyhedral, fishtail-like and needle-like shapes were controlledly synthesized via the microemulsion-assisted solvothermal method by regulating the molar ratio of water to CTAB. The size of the needle-like Nd2(CO3)3?8H2O particles decreased with increase of the concentration of Nd(NO3)3.

Key words: Reverse microemulsion, Microemulsion-assisted solvothermal method, Nd2(CO3)3?8H2O, Controlled synthesis

中图分类号: 

TrendMD: