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Fast Synthesis of Cerium Oxide Nanoparticles and Nanorods

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The microwave-hydrothermal method has been investigated for the fast synthesis of rare earth cerium oxide (CeO2) nanoparticles and nanorods. This approach combines the advantages of both hydrothermal and microwave heating techniques. It is facile, rapid, energy-saving, and environmentally-benign and leads to high-yields. The average sizes of the obtained CeO2 nanoparticles could be adjusted from ∼1.6 nm to ∼20 nm. Moreover, by changing cerium source and adjusting the amount of the added ammonia water, CeO2 nanorods could be synthesized under microwave-assisted conditions for the first time. No calcination process or surfactant is required in our experiments for both CeO2 nanoparticles and nanorods. The ultraviolet and visible (UV-vis) spectra show the obvious size-dependence of the position of the absorbance peak. The Brunaur Emmett Teller (BET) nitrogen adsorption indicates that these nanoparticles and nanorods have high specific surface areas, which are needed for potential applications in many fields. Compared with conventional hydrothermal method, microwave-assisted hydrothermal method shows its advantages of rapidity, convenience and perhaps cost-effectiveness and could be extended to the synthesis of other nanoparticles and nanorods.


Document Type: Research Article


Publication date: December 1, 2006

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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