Structural and spectroscopic characteristics of terbium hydroxide/oxide nanorods and plates

Title
Structural and spectroscopic characteristics of terbium hydroxide/oxide nanorods and plates
Author(s)
손영구
Keywords
RARE-EARTH HYDROXIDES; HYDROTHERMAL SYNTHESIS; ENERGY-TRANSFER; PHOTOLUMINESCENCE PROPERTIES; FLUORESCENCE PROPERTIES; LUMINESCENT PROPERTIES; AQUEOUS-SOLUTION; CONGO RED; TB; EU
Issue Date
201411
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v.40, no.9, pp.13803 - 13811
Abstract
Tb(III) complexes with morphologies of nanorods and plates were prepared by a hydrothermal method. Post-thermal treatment was then applied to obtain Tb(IV) oxides with the same morphologies. Their nanostructures were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) crystallography, UV-vis absorption, FT-IR, Raman, X-ray photoelectron spectroscopy (XPS), and photoluminescence imaging spectroscopy. Strong photoluminescence signals between 470 and 720 nm were attributed to the D-5(4) -> F-7(J) (J = 6, 5, 4, 3) transitions of Tb(III). The Tb(III) complex and Tb(OH)(3) were found to be converted to Tb(IV) oxide upon thermal annealing at 700 degrees C. The oxidation state of Tb(III) was changed to non-luminescent Tb(IV), as clearly evidenced by UV-vis absorption, change in sample color, XPS, photoluminescence and XRD patterns. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/30454http://dx.doi.org/10.1016/j.ceramint.2014.05.096
ISSN
0272-8842
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이과대학 > 화학생화학부 > Articles
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