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日用化学工业 ›› 2020, Vol. 50 ›› Issue (3): 159-163.doi: 10.3969/j.issn.1001-1803.2020.03.004

• 开发与应用 • 上一篇    下一篇

基于非水微乳液法纳米二氧化铈的制备及表征

孙维艳1,2,吕银荣1,2,王峰2   

  1. 1. 中北大学,山西 太原 030051
    2. 太原工业学院,山西 太原 030008
  • 收稿日期:2019-07-25 修回日期:2020-01-16 出版日期:2020-03-22 发布日期:2020-04-02
  • 作者简介:孙维艳(1994-),女,山西文水人,硕士研究生,电话:13383433054,E-mail: 643828651@qq.com
  • 基金资助:
    山西省自然科学基金资助项目(201701D121040)

Preparation and characterization of nano-CeO2 based on non-aqueous microemulsion method

Wei-yan SUN1,2,Yin-rong LV1,2,Feng WANG2   

  1. 1. North university of China, Taiyuan, Shanxi 030051, China
    2. Taiyuan Institue of Technology, Taiyuan, Shanxi 030008, China
  • Received:2019-07-25 Revised:2020-01-16 Online:2020-03-22 Published:2020-04-02

摘要:

以脂肪醇聚氧乙烯(3)醚(AEO-3)/正辛烷/甲醇非水微乳液体系为反应介质合成了纳米二氧化铈(CeO2)。通过UV-Vis光谱和染色法研究了非水微乳液的微观结构。运用相图法确定了微乳液区域及合成纳米CeO2的较佳条件为:m(AEO-3)︰m(正辛烷)=4︰6,Ce(NO33 浓度0.3 mol/L,NaOH浓度0.9 mol/L,甲醇质量分数14%。采用X射线衍射(XRD)、Nano-ZS型动态光散射仪、扫描电镜(SEM)等手段对纳米CeO2进行表征。结果表明,在特定的AEO-3/正辛烷/甲醇非水微乳液体系中制备的纳米CeO2是高纯萤石结构,颗粒粒度小(10~20 nm)、分布均匀呈球形。

关键词: 非水微乳液, 微观结构, 三元相图, 纳米CeO2, 脂肪醇聚氧乙烯(3)醚

Abstract:

Nano-CeO2 was synthesized by using fatty alcohol polyoxyethylene (3) ether (AEO-3)/n-octane/methanol non-aqueous microemulsion system as the reaction medium. The microstructure of the non-aqueous microemulsion was investigated by ultraviolet-visible (UV-Vis) spectroscopy and staining. The microemulsion region and the optimal synthesis conditions of Nano-CeO2 were determined by phase diagram method: in which m(AEO-3)∶m(n-octane)=4︰6, the concentration of cerium nitrate was 0.3 mol/L, the concentration of precipitant sodium hydroxide was 0.9 mol/L, and the mass fraction of methanol was 14%. The Nano-CeO2 was characterized by X-ray diffraction (XRD), dynamic light scattering, and scanning electron microscopy (SEM). The results show that nano-CeO2 prepared in AEO-3/n-octane/methanol non-aqueous microemulsion system is a high purity fluorite structure, with small particle size (10-20 nm) and uniform spherical distribution.

Key words: non-aqueous microemulsion, microstructure, ternary phase diagram, nano-CeO2, fatty alcohol polyoxyethylene (3) ether

中图分类号: 

  • TQ423