Y{sub 2}O{sub 3}:Eu{sup 3+} microstructures: Hydrothermal synthesis and photoluminescence properties
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022 (China)
Hexagonal microprisms of yttrium hydroxide (Y(OH){sub 3}) with tuned diameter and height have been successfully prepared for the first time via a facile hydrothermal process using sodium citrate as the shape modifying agent. Y(OH){sub 3} microspheres with diameter of ca. 2.5 {mu}m and microtubes with an average length about 13 {mu}m, outer diameter about 3 {mu}m and tube thickness about 800 nm were also obtained in current reaction systems. The possible formation mechanism for the Y(OH){sub 3} microstructures was briefly proposed. Y{sub 2}O{sub 3}:Eu{sup 3+} (5%) microstructures with similar morphologies was obtained after thermal treatment of the as-prepared Y(OH){sub 3}:Eu{sup 3+} microstructures at 700 {sup o}C for 4 h. Results show that the relative emission intensity of the Y{sub 2}O{sub 3}:Eu{sup 3+} microprisms is about 8 times as those of the Y{sub 2}O{sub 3}:Eu{sup 3+} microtubes and microspheres under excitation of 259 nm ultraviolet light. The products were characterized by XRD, SEM, and EDS.
- OSTI ID:
- 22202517
- Journal Information:
- Materials Research Bulletin, Vol. 44, Issue 12; Other Information: Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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