Zirconium metal organic framework for design of tetragonal rare earth-doped zirconia nanoparticles

Lam Thi Kieu Giang^1,2，Lukasz Marciniak³，Krzysztof Kamil Zur⁴，Dinh Manh Tien¹，Nguyen Vu¹，Nguyen Thanh Binh⁵，Tran Kim Anh^1,6，Le Quoc Minh^1,6

1. Institute of Materials Science,Vietnam Academy of Science and Technology2. Graduate University of Science and Technology,Vietnam Academy of Science and Technology3. Institute of Low Temperature and Structural Research,Polish Academy of Sciences,ul4. Faculty of Mechanical Engineering,Bialystok University of Technology5. Institute of Applied Physics and Scientific Instrument,Vietnam Academy of Science and Technology6. Duy Tan University

摘 要：Zirconium metal-organic frameworks ZrOBDC（where BDC=C₆H₄（COOH）₂,terephthalic acid） doped and co-doped with rare earth ions Ln(ZrOBDC:Ln³⁺,where Ln³⁺=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:Ln3+NPs） through annealing process.Preparation,characterization and luminescence properties of ZrOBDC:Ln³⁺ and ZrO₂:Ln³⁺NPs were investigated.The as-obtained t-ZrO₂:Ln³⁺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 ⁵D₄→⁷F₅ and ⁵D₀→⁷F₂ transitions of Tb₃₊ and Eu³⁺ ions,respectively.The green and red up-conversion emissions of ZrO₂:Er³⁺,Yb³⁺ NPs due to ²H_11/2,⁴S_3/2→⁴I_15/2 and ⁴F_9/2→⁴I_15/2 transitions of the Er³⁺ ions are observed under 976 nm laser excitation.

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