Highly uniform Gd2O3 hollow microspheres: template-directed synthesis and luminescence properties

Langmuir : the ACS Journal of Surfaces and Colloids
Guang JiaHongjie Zhang

Abstract

Well-dispersed, uniform Gd(2)O(3) hollow microspheres have been successfully fabricated via a urea-based homogeneous precipitation method in the presence of colloidal melamine formaldehyde (MF) microspheres as templates, followed by subsequent heat treatment. The main process was carried out under aqueous conditions without any organic solvents, surfactants, or etching agents. The as-obtained Gd(2)O(3) microspheres with a spherical shape and hollow structure are uniform in size and distribution, and the thickness of the shell is about 200 nm. The lanthanide ion (Ln(3+))-doped Gd(2)O(3) hollow microspheres exhibit bright down- and upconversion luminescence with different colors coming from different activator ions under ultraviolet or 980 nm light excitation, which might find potential applications in fields such as drug delivery or biological labeling because of their excellent dispersing and luminescence properties. Furthermore, this synthesis route may be of great significance in the preparation of other hollow spherical materials.

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Citations

Oct 11, 2013·ACS Applied Materials & Interfaces·Ruichan LvPiaoping Yang
Jun 27, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Yu GaoZhenhe Xu
Sep 15, 2011·Angewandte Chemie·Juan WangXiaogang Liu
Apr 14, 2012·Journal of Biomedical Materials Research. Part a·Timur Sh AtabaevHyung-Kook Kim
Nov 15, 2013·Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology·Xiaojiao KangJun Lin
May 10, 2016·Chemical Reviews·Xiaojing WangYadong Yin
Oct 7, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Bianyun CaiFabao Gao
Apr 21, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Rumin LiPiaoping Yang
Jul 7, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Zhi WuFabao Gao
Apr 7, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Jie XuPiaoping Yang

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