Ag-catalyzed Synthesis of Tb(BO2)3 Nanorods

Autor:	Zi-wei Tang, Lan Yang, Liqun Zhou, Ying Huang
Rok vydání:	2010
Předmět:	Crystallography Nanostructure Materials science Photoluminescence Transmission electron microscopy Nanotechnology Phosphor Nanorod Crystal growth Physical and Theoretical Chemistry Selected area diffraction Luminescence
Zdroj:	Chinese Journal of Chemical Physics. 23:713-718
ISSN:	2327-2244 1674-0068
DOI:	10.1088/1674-0068/23/06/713-718
Popis:	Well-crystallized with excellent luminescent properties, Tb(BO2)3 nanorods were first successfully synthesized by a simple solid-state method with Ag as catalyst. The result of X-ray diffraction showed that the Tb(BO2)3 nanorods could be well-crystallized at 700 °C. As-prepared straight nanorods of Tb(BO2)3 had the typical diameters in the range of 100–200 nm, the thickness of 30–50 nm and the lengths up to 3 μm by transmission electron microscopy and the corresponding selected area electron diffraction indicated that the nanorod calcined at 700 °C was single-crystalline. Based on the fact that Ag nanoparticles attached to the tips and middles of the Tb(BO2)3 nanorods, a growth model of the Tb(BO2)3 nanorods was proposed. Photoluminescence spectra under excitation at 369 nm showed that these Tb(BO2)3 phosphors had a green emission at 546 nm, which is ascribed to 5D4→7F5 transition. The effect of calcining temperature on the structures, morphologies, and luminescent properties of Tb(BO2)3 phosphors were studied.
Databáze:	OpenAIRE
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