Abstract
A large-scale synthesis of uniform Eu 2O 3 nanorods was realized without templates by a simple precipitation method under ambient pressure with the subsequent calcination. The products were characterized by X-ray diffraction spectroscopy, transmission electron microscopy, scanning electron microscopy, thermogravimetry and differential scanning calorimetry. It is demonstrated that the Eu 2O 3 nanorods with the pure body-centered cubic structure have a diameter of ∼20 nm and a length of 100–300 nm. The influence of reaction temperature, solution concentration, and reaction time on the formation of nanorods is investigated, and the possible growth mechanism is also discussed. The room temperature photoluminescence analysis shows that Eu 2O 3 nanorods have a strong red emission peak of Eu 3+ ion at around 611 nm due to the 5D 0 → 7F 2 forced electric dipole transition of Eu 3+ ions.
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