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China Surfactant Detergent & Cosmetics ›› 2020, Vol. 50 ›› Issue (3): 159-163.doi: 10.3969/j.issn.1001-1803.2020.03.004

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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

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

CLC Number: 

  • TQ423