Synthesis and characterization of mono-dispersed Y3Al5O12:Er3+-coated SiO2 nanoparticles by co-precipitation process

Synthesis and characterization of mono-dispersed Y3Al5O12:Er3+-coated SiO2 nanoparticles by co-precipitation process: "

Abstract  

In this paper, a facile co-precipitation process for preparing mono-dispersed core–shell structure nanoparticles is reported.
The 110 nm SiO₂ cores coated with an yttrium aluminum garnet (Y₃Al₅O₁₂) layer doped with Er³⁺ were synthesized and the influence of the concentration ratio of [urea]/[metal ions] on the final product was investigated.
The structure and morphology of samples were characterized by the X-ray powder diffraction, Fourier transform IR spectroscopy
and transmission electron microscopy, respectively. The results indicate that a layer of well-crystallized garnet Y₃Al₅O₁₂:Er³⁺ were successfully coated on the silica particles with the thickness of 20 nm. The near infrared and upconversion luminescent
spectra of the SiO₂@Y₃Al₅O₁₂:Er³⁺ powders further confirm that a Y₃Al₅O₁₂:Er³⁺ coating layer has formed on the surface of silica spherical particles.

• Content Type Journal Article
• Category Research Paper
• DOI 10.1007/s11051-010-0036-x
• Authors
  • Cheng-Ning Xie, South China University of Technology Key Lab of Specially Functional Materials of Ministry of Education and Institute of Optical Communication Materials Guangzhou 510641 People’s Republic of China
  • Zhong-Min Yang, South China University of Technology Key Lab of Specially Functional Materials of Ministry of Education and Institute of Optical Communication Materials Guangzhou 510641 People’s Republic of China

• Journal Journal of Nanoparticle Research
• Online ISSN 1572-896X
• Print ISSN 1388-0764

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