Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (05): 1284-1290.doi: 10.3866/PKU.WHXB20100333

• COLLOID AND INTERFACE CHEMISTRY • Previous Articles     Next Articles

Size Controlled Synthesis of CeO2 Nanoparticles by a Microemulsion Method

ZHU Wen-Qing, XU Lei, MA Jin, REN Jian-Mei, CHEN Ya-Shao   

  1. Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, P. R. China; College of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an 710048, P. R. China
  • Received:2009-10-23 Revised:2010-01-05 Published:2010-04-29
  • Contact: CHEN Ya-Shao E-mail:yschen@snnu.edu.cn

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Abstract:

Precursors of CeO2 were synthesized in a reverse microemulsion composed of cetyltrimethylammonium bromide (CTAB), 1-butanol, 1-octane, Ce(NO3)3 brine (ammonia). The optimum calcination temperature (550 ℃) was derived from thermogravimetry (TG) analysis and X-ray powder diffraction (XRD). The CeO2 nanoparticles were then prepared by calcining the precursors at 550 ℃. The structures, morphologies, size, and UV absorption properties of the CeO2 nanoparticles were characterized by XRD, transmission electron microscopy (TEM), and UV-Vis spectroscopy. Cubic crystalline CeO2 nanoparticles of 5 -18 nm in size and with good monodispersity were obtained using this method. The influences of the mass ratio of 1-octane to 1-butanol and the concentration of Ce(NO3)3 on the size of the CeO2 nanoparticles were studied. Results showed that CeO2 nanoparticle size was dependent on the mass ratio of 1-octane to 1-butanol and the concentration of Ce(NO3)3. The size of the CeO2 nanoparticles decreased as the mass ratio of 1-octane to 1-butanol as well as the concentration of Ce(NO3)3 increased. In addition, we studied the UV absorption properties of the CeO2 nanoparticles by UV-Vis spectroscopy.

Key words: Microemulsion, CeO2 nanoparticle, Controlled size, Synthesis, UV absorption property