Submicron-size particles of titania were coated by a nanolayer of europium oxide with the aid of power ultrasound. Ultrasound irradiation of a slurry of titania, europium nitrate, and ammonia in an aqueous medium for 120 min yielded a Eu 2 O 3 −TiO 2 nanocomposite. The Eu 2 O 3 nanolayer deposited on the submicron-size TiO 2 particles was characterized by transmission electron microscopy, high-resolution scanning electron microscopy, high-resolution transmission electron microscopy, energy-dispersive X-ray analysis, and optical X-ray photoelectron spectroscopies.
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Pol et al. (2002) studied this question.
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