Synthesis and Characterization of Ceria Nanopowder with High Specific Surface Area
Ceria nanopowder with specific surface area of 180 m2/g and average crystallite size of 7.5 nm have successfully been prepared via hydrothermal treatment of urea and yellow sol obtained from reaction between cerium nitrate and ammonia and subsequent calcination. The effects of cerium source and molar ratio of Ce(NO3)3/H2NCONH2 = 5/8 on specific surface area of the obtained ceria were investigated by the Brunaner-Emmett-Teller (BET) method, using an ASPA 2010 analyzer. The morphology, phase and composition of representative samples were characterized by transmission electron microscopy (TEM), X-ray diffractometry (XRD) and fourier transform infrared spectroscopy (FT-IR), respectively. The results from UV-Vis spectrophotometry show that all the samples have an excellent UV-absorption capacity, especially the sample obtained when molar ratio of Ce(NO3)3/H2NCONH2 is 5/8.
Nanopowders Ceria ig specific surface area UV-absorption Urea
Zhou Xinmu Chen Huiqin Chen Weifan Li Yongxiu Guo Shujun
Department of Chemistry, School of Science, Nanchang University No 999, Seatoflearning Road, Red Val School of Materials Science and Engineering, Nanchang University No 999, Seatoflearning Road, Red Va
国际会议
沈阳
英文
287-290
2009-08-27（万方平台首次上网日期，不代表论文的发表时间）