Synthesis and Characterization of TiO_2-CeO_2 Nanocomposite by Supercritical Fluid Drying

查看全文 作　　者：[1]张敬畅;[1]高玲玲;[1]曹维良

机构地区：[1]Beijing University of Chemical Technology,Institute of Modern Catalysis

出　　处：《Journal of Rare Earths》索引2003年第21卷第S1期,共4页

基　　金：ProjectsupportedbytheNationalDevelopmentProjectofHighTechnology (863 ,2 0 0 1AA3 2 2 0 3 0 )andtheNationalNaturalScienceFoundationofChina (2 0 0 760 0 4) 摘　　要：TiO2-CeO2 nanocomposite particles were prepared with Ce(NO3)3·6H2O and TiCl4 as precursors by the codeposition method and supercritical fluid drying (SCFD) technology. The particles prepared were characterized by means of XRD, TEM and FTIR. The results show that SCFD can give rise to the direct synthesis of the anatase TiO2-CeO2,and the particle size is 6~11 nm under 500 ℃ thermal-treated,smaller than that by common drying (CD). The phase transformation from anatase to rutile is inhibited by supercritical fluid drying technology. The peak of CeO2 is not observed in XRD patterns,Ce-O band vibration was present in FTIR spectrum,which indicates that CeO2 is well dispersed on the surface of TiO2. 关键词：TITANIA CERIA SUPERCRITICAL fluid DRIED NANOCOMPOSITE RARE earths

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Synthesis and Characterization of TiO_2-CeO_2 Nanocomposite by Supercritical Fluid Drying

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