Ultrasonic-induced synthesis of high surface area colloids CeO2–ZrO2
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The nanostructures of high surface area ceria–zirconia colloids have been successfully synthesized via a sonochemical method in the presence of polyethylene glycol 600. Their structural characteristics have been investigated using powder XRD, FESEM, BET surface area, TG, and other techniques. The average size of CeO2–ZrO2 nanoparticles is estimated to be 3.7 nm using Debye–Scherrer’s equation. The BET analysis indicates that colloids CeO2–ZrO2 have a remarkably high surface area of 226 m2 g−1.
KeywordsCeria–zirconia colloids Ultrasonic synthesis High surface area Oxygen storage capacity Nanoparticles
This work was supported by the Doctoral Found of Qingdao University of Science & Technology, the National Natural Science Foundation of China (No.20775038), and the Scientific and Technical Tackle Key Problem Project of Shandong Province (2006GG2203024).