Jump to main content
Jump to site search

Issue 13, 2014
Previous Article Next Article

Facile preparation and fluorescence enhancement of yolk-like Ag@Y2O3:Yb3+,Tm3+ hollow structured composite

Author affiliations

Abstract

A yolk-like Ag@Y2O3:Yb3+,Tm3+ hollow structured composite was prepared through a layer-by-layer technique by coating a carbon layer on Ag seeds and further coating a Y2O3:Yb3+,Tm3+ layer, followed by a subsequent calcination process. The phase, morphology, structure, formation process, and up-conversion properties are well characterized by various techniques. XRD results show that all diffraction peaks of the products are consistent with standard values for the pure cubic phase of Y2O3 and cubic Ag. TEM images demonstrate that the interior space of the composite can be tuned by altering the thickness of the carbon layer. Moreover, the possible evolution mechanism from Ag cores to the final yolk-like structured composite is described. By doping the Yb3+ and Tm3+ ions into the Y2O3 host matrix, these particles show blue (1G43H6) and near infrared (3H43H6) emissions with different intensity depending on carbon layer thickness under 980 nm NIR laser excitation. Therefore, this material has potential for application in biomedical fields. In addition, the synthetic route may be of great value in the preparation of other hollow materials.

Graphical abstract: Facile preparation and fluorescence enhancement of yolk-like Ag@Y2O3:Yb3+,Tm3+ hollow structured composite

Back to tab navigation

Publication details

The article was received on 29 Sep 2013, accepted on 24 Dec 2013 and first published on 09 Jan 2014


Article type: Paper
DOI: 10.1039/C3RA45464A
Citation: RSC Adv., 2014,4, 6696-6701
  •   Request permissions

    Facile preparation and fluorescence enhancement of yolk-like Ag@Y2O3:Yb3+,Tm3+ hollow structured composite

    C. Zhong, H. Ji, R. Li, J. Wang, Z. Li, X. Sun and P. Yang, RSC Adv., 2014, 4, 6696
    DOI: 10.1039/C3RA45464A

Search articles by author

Spotlight

Advertisements