Synthesis of nano-sized ceria (CeO2) particles via a cerium hydroxy carbonate precursor and the effect of reaction temperature on particle morphology

Document Type : Research Paper


Department of Physics, Varamin Pishva Branch, Islamis Azad University, Varamin, Iran


Cerium oxide (CeO2) or ceria has been shown to be an interesting support material for noble metals in catalysts designed for emission control, mainly due to its oxygen storage capacity. Ceria nanoparticles were prepared by precipitation method. The precursor materials used in this research were cerium nitrate hexahydrate (as a basic material), potassium carbonate and potassium hydroxide (as precipitants). The morphological properties were characterized by high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM) and X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and UV-Vis spectrophotometer. XRD results showed face centered cubic CeO2 nanoparticles for annealed nanoparticles at 1000°C. SEM measurement showed that by increasing the calcinations temperature from 200 to 600°C, the crystallite size decreased from 90 to 28 nm. The SEM results showed that the size of the CeO2 nanoparticles decreased with increasing temperature. The particle size of CeO2 was around 25 nm as estimated by XRD technique and direct HRTEM observation. SEM and TEM studies showed that the morphology of the prepared powder was sphere-like with a narrow size distribution. The sharp peaks in FTIR spectrum determined the purity of CeO2 nanoparticles and absorbance peak of UV-Vis spectrum showed the small band gap energy of 3.26 ev.


[1]. J. Zhou, L. Zhao, Q. Huang, R. Zhou and X. Li, Catalytic Activity of Y Zeolite Supported CeO2 Catalysts for Deep Oxidation of 1, 2-
Dichloroethane (DCE), Cat. Lett. 127 (2009) 277-284.
[2]. X. Zheng, X. Zhang, S. Wang, X.Wang and S. Wu, Effect of Addition of Base on Ceria and Reactivity of CuO/CeO2 Catalysts for Low-Temperature CO Oxidation, J. Natural Gas Chem. 16 (2007) 179-185.
[3]. B. Zhu, X. Liu, M. Sun, S. Joi and J. Sun, Calcium doped ceriabased materials for Cost effective intermediate temperature solid oxide fuel cells Sun, Solid State Sciences, 5 (2003) 1127-1134.
[4]. T.S. Zhang, J. Ma, L.B. Kong, S.H. Chan and J.A. Kilner, Aging behavior and ... ceramics: a comparative study, Solid State Ionics, 170 (2004) 209-217.
[5]. A. Samson Nesaraj, I. Arul Raj and R. Pattabiraman, Synthesis and characterization of LaCoO based cathode and its chemical compatibility with CeO based electrolytes for intermediate temperature solid oxide fuel cell (ITSOFC), Ind. J. Chem. Tech. 14 (2007) 154-160.
[6]. T. Hibino, K. Ushiki and Y. Kuwahara, Electrochemical oxygen pump using CeO2 -based solid electrolyte for NOx detection independent of O2 concentration, Solid State Ionics, 93 (1997) 309-316.
[7]. J.F. de Lima, R.F. Martins, C.R. Neri and O.A. Serra, ZnO: CeO2 -based nanopowders with low catalytic activity as UV absorbers, App. Surf. Sci. 255 (2009) 9006-9009.
[8]. Y.M. Zhang, M. Hida, H. Hashimoto, Z.P. Luo and S.X. Wang, Effect of rare-earth oxide. (CeO2) on the microstructures in laser melted layer, J. Mater. Sci. 35 (2004) 5389-5400.
[9]. A.K. Sinha and K. Suzuki, Preparation and characterization of novel mesoporous ceria- titania, J. Phy. Chem. B, 109 (2005) 1708-1714.
[10]. K. Jiang, J. Meng, Z. He, Y. Ren and Q. Su, Sol-gel synthesis and electrical properties of ceria-based solid electrolytes, Sci. in China Series B: Chem. 42 (1999) 159-163.
[11]. L.L. Shaw, C. Shen and E.L. Thomas, Synthesis of gadolinia-doped ceria gels and powders from acetylacetonate precursors, J. Sol-Gel Sci. Tech. 53 (2010) 1-11.
[12]. J. Guo, X. Xin, X. Zhang, S. Zhang, Ultrasonic-induced synthesis of high surface area colloids CeO2 – ZrO2, J. Nanoparticle Res. 11 (2009) 737-741.
[13]. M. Kamruddin, P.K. Ajikumar, R. Nithya, A.K. Tyagi and B. Raj, Synthesis of nanocrystalline ceria by thermal decomposition and soft-chemistry methods, Scripta Materialia, 50 (2004) 417-422.
[14]. A.I.Y. Tok, F.Y.C. Boey, Z. Dong and X.L. Sun, Hydrothermal synthesis of CeO2 nanoparticles, J. Mater. Processing Tech. 190 (2007) 217-222.
[15]. A. Valentini, N.L.V. Carreno, L.F.D. Probst, A. Barison, A.G. Ferreira, E.R. Leite and E. Longo, Ni: CeO2 nanocomposite catalysts prepared by polymeric precursor method, Appl. Cataly. A: General, 310 (2006) 174-182.
[16]. J.G. Li, T. Ikegami, Y. Wang, T. Mori, Review of fuel processing catalysts for 
hydrogen production in PEM fuel cell systems, (2002) J Am Ceram Soc 85:2376.
[17]. J. Bai, Z. Xu, Y. Zheng, H. Yin, Shape control of CeO2 nanostructure materials in microemulsion systems, (2006) Mater Lett 60:1287.
[18]. Z. Guo, F. Du, Z. Cui, Synthesis and characterization of bundle-like structures consisting of single crystal Ce(OH)CO3 nanorods, (2007) Mater Lett 61:694 .
[19]. B. Ksapabutr, E. Gulari, S. Wongkasemjit, Sol–gel derived porous ceria powders using cerium glycolate complex as precursor, (2006) Mater Chem Phys 99:318.
[20]. J.P. Viricelle, M. Pijolat, M. Soustelle, C. Zing, Transformation of cerium(III) hydroxycarbonate into ceria, (1995) J Chem Soc Faraday Trans 91:4431.
[21]. D. Zhang, W. Wu, X. Ni, X. Cao, X. Zhang, X. Xu, S. Li, G. Han, A. Ying, Z. Tong, Fabrication and characterization of novel bowknot-like CeO2 crystallites and applications for Methyl-orange Sensors, (2009) J Mater Sci 44:3344 ,
[22]. M.Y. Cho, K.C. Roh, S.M. Park, H.J. Choi, J.W. Lee, Control of particle size and shape of precursors for ceria using ammonium carbonate as a precipitant, (2010) Mater Lett 64:323.
[23]. K. Foger, M. Hoang, T.W. Turney, Formation and thermal decomposition of rare-earth carbonates, (1992) J Mater Sci 27:77.
[24]. K. Reinhardt, H. Winkler. (2002) Cerium mischmetal, cerium alloys, and cerium compounds. In: Ullmann's encyclopedia of industrial chemistry. Vol. 7. Weinheim, Germany: Wiley-VCH, pp. 285–300.