Template-Directed Synthesis and Upconversion Luminescence of Y₂O₃ Hollow Spheres

Abstract:

Uniform Y₂O₃ hollow microspheres have been successfully prepared via a urea-based homogeneous precipitation technique with colloidal carbon spheres as template followed by a subsequent calcination process. The template can be effectively removed and the amorphous precursor has converted to crystalline Y₂O₃ during the annealing process. SEM images indicate that the hollow spheres inherit the spherical shape and good dispersion of the templates, and the shell of the hollow spheres is composed of a large amount of uniform nanoparticles. The lanthanide activator ion Ln³⁺-doped Y₂O₃ hollow microspheres exhibit bright upconversion luminescence with different colors under 980 nm light excitation, which may find potential applications in the fields such as light phosphor powders, advanced flat panel displays, or drug delivery.

• Periodical: Advanced Materials Research (Volume 1052)
• Pages: 198-202
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1052.198
• Online since: October 2014
• Authors: Cui Miao Zhang, Jian Yuan Wang, Ya Min Liu, Guang Jia
• Keywords: Hollow Spheres, Template-Directed Synthesis, Upconversion Luminescence, Y₂O₃

References

[1] G. Glaspell, J. Anderson, J.R. Wilkins and M.S. El-Shall: J. Phys. Chem. C Vol. 112 (2008), p.11527.

[2] Z.L. Wang, J.H. Hao and H L.W. Chan: J. Mater. Chem. Vol. 20 (2010), p.3178.

[3] F. Vetrone, V. Mahalingam and J. A. Capobianco: Chem. Mater. Vol. 21 (2009), p.1847.

[4] F. Wang and X. G. Liu: J. Am. Chem. Soc. Vol. 130, (2008), p.5642.

[5] J. Yang, C. Zhang, C. Peng, C. Li, L. Wang, R. Chai and J. Lin: Chem. Eur. J. Vol. 15 (2009), p.4649.

[6] G.K. Das and T.Y. Tan: J. Phys. Chem. C Vol. 112, (2008), p.11211.

[7] H.S. Im, U. Jeong and Y. Xia: Nat. Mater. Vol. 4, (2005), p.671.

[8] A.N. Zelikin, Q. Li and F. Caruso: Angew. Chem. Int. Ed. Vol. 45 (2006), p.7743.

[9] X.W. Lou and L.A. Archer: Adv. Mater. Vol. 20 (2008), p.1853.

[10] F. Wang and X.G. Liu: J. Am. Chem. Soc. Vol. 130 (2008), p.5642.

[11] D. Matsuura: Appl. Phys. Lett. Vol. 81 (2002), p.4526.