Synthesis of CeO2 Nanorods via Ultrasonication Assisted by Polyethylene Glycol

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• 作者：Dengsong Zhang ; Hongxia Fu ; Liyi Shi ; Chengsi Pan ; Qiang Li ; Yuliang Chu ; Weijun Yu
• 刊名：Inorganic Chemistry
• 出版年：2007
• 出版时间：April 2, 2007
• 年：2007
• 卷：46
• 期：7
• 页码：2446 - 2451
• 全文大小：535K
• 年卷期：v.46,no.7(April 2, 2007)
• ISSN：1520-510X

文摘

Polycrystalline CeO₂ nanorods 5-10 nm in diameter and 50-150 nm in length were synthesized via ultrasonicationusing polyethylene glycol (PEG) as a structure-directing agent at room temperature. The properties of the CeO₂nanorods were characterized by TEM, EDS, XRD, XPS, FT-IR, TG, BET, and UV-vis spectroscopy. Various reactionparameters, such as the content of PEG, the molecular weight of PEG, the concentration of KOH, the pH value,and the sonication time, were investigated by a series of control experiments. The content of PEG, the molecularweight of PEG, and the sonication time were confirmed to be the crucial factors determining the formation ofone-dimensional CeO₂ nanorods. A possible ultrasonic formation mechanism has been suggested to explain theformation of CeO₂ nanorods.