Jump to main content
Jump to site search

Issue 37, 2013
Previous Article Next Article

Synthesis of Eu3+-doped Gd2O3 in hollow nanoparticle structures by controlled chemical etching with poly(acrylic acid)

Author affiliations

Abstract

Hollow Eu3+:Gd2O3 nanoparticles were easily prepared, without employing templates, from spherical crystalline Eu3+:Gd2O3 nanoparticles (NPs) via the simple etching process induced by the acidic moieties in the sodium salt solution of poly(acrylic acid), PAA-Na. Some portion of carboxylate units in PAA-Na could bind to the surface of Eu3+:Gd2O3 NPs and control the etching rate of Eu3+:Gd2O3 in acidic conditions such that the rate becomes comparable to the cation migration rate within the crystalline NPs, generating hollow Eu3+:Gd2O3 NPs. This controlled etching process in the presence of additional acid after surface treatment of Eu3+:Gd2O3 NPs with PAA-Na, varied the resulting structures from solid NPs to core-shell, core-void-shell, yolk-shell, and finally, hollow NPs. Based on the low r2/r1 value obtained from the relaxation times measured by time-domain nuclear magnetic resonance (TD-NMR) spectrometry and the good photoluminescent properties of hollow Eu3+:Gd2O3 NPs, accelerated development of multimodal nanoprobes and drug delivery vessels is expected, using the various morphological novelties of synthesized Eu-doped Gd2O3 nanoparticles.

Graphical abstract: Synthesis of Eu3+-doped Gd2O3 in hollow nanoparticle structures by controlled chemical etching with poly(acrylic acid)

Back to tab navigation

Supplementary files

Article information


Submitted
25 Mar 2013
Accepted
10 Jul 2013
First published
11 Jul 2013

RSC Adv., 2013,3, 16374-16379
Article type
Paper

Synthesis of Eu3+-doped Gd2O3 in hollow nanoparticle structures by controlled chemical etching with poly(acrylic acid)

S. Yu, J. Cha and J. Lee, RSC Adv., 2013, 3, 16374
DOI: 10.1039/C3RA41446A

Social activity

Search articles by author

Spotlight

Advertisements