Journal
JOURNAL OF RARE EARTHS
Volume 37, Issue 11, Pages 1230-1236Publisher
ELSEVIER
DOI: 10.1016/j.jre.2019.03.003
Keywords
Zirconium; Rare earth; ZrOBDC; ZrOBDC:Ln(3+); ZrO2:Ln(3+); Up-conversion
Categories
Funding
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [103.03-2016.60, QTPL01.01/18-19]
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Zirconium metal-organic frameworks ZrOBDC (where BDC = C6H4(COOH)(2), terephthalic acid) doped and co-doped with rare earth ions Ln (ZrOBDC:Ln(3+), where Ln(3+) = Eu3+ and Tb3+ as well as Er3+ and Yb3+) were used as precursors for the design of tetragonal rare earth doped zirconia nanoparticles (t-ZrO2:Ln(3+) NPs) through annealing process. Preparation, characterization and luminescence properties of ZrOBDC:Ln(3+) and ZrO2:Ln(3+) NPs were investigated. The as-obtained t-ZrO2:Ln(3+) NPs have high purity with an average size of 20-30 nm. The luminescence spectra of ZrOBDC:Tb3+ and ZrOBDC:Eu3+ display strong green and red emission at around 544 and 611 nm which correspond to D-5(4) -> F-7(5) and D-5(0) -> F-7(2) transitions of Tb3+ and Eu3+ ions, respectively. The green and red up-conversion emissions of ZrO2 :Er3+,Yb3+ NPs due to H-2(1)1/(12), S-4(3/2) -> I-4(15/2) and F-4(9/2) -> I-4(15/2) transitions of the Er3+ ions are observed under 976 nm laser excitation. (C) 2019 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
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