Abstract
We have synthesized pure nanocrystalline CeO2 powders of nearly spherical shape using high-energy attritor ball mill. Milling parameters such as the milling speed of 400rpm, ball to powder ratio (40:1), milling time (30h) and water cooled media were determined to be suitable for synthesizing nanosize (∼10nm) powders of CeO2. The powders after milling for various durations (up-to 50h) were characterized by X-ray Diffraction, Scanning Electron Microscopy, Energy-dispersive X-ray Spectrometry and Transmission Electron Microscopy. An average particle size of 10nm was obtained at 30h milling, after which the particle agglomeration started, and a mixture of nanocrystalline and amorphous phase was observed after 50h milling.
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