Fabrication of Eu-coated silica particles by homogeneous precipitation method

Y. Kobayashi; J. Imai; D. Nagao; M. Konno

doi:10.1016/j.colsurfa.2008.05.017

Fabrication of Eu-coated silica particles by homogeneous precipitation method

Y. Kobayashi, J. Imai, D. Nagao, M. Konno

ENG - Chemical Engineering

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

This paper describes a method for Eu-coating of submicron-sized silica particles. The core silica particles with an average size of 333 nm were prepared with Stöber method. The Eu-coating was performed in a water/propanol solvent in the presence of silica particles and europium acetate with a homogeneous precipitation method with the use of urea. Transmission electron microscopy (TEM) observation and measurements of ζ-potentials revealed that the silica particles were successfully coated with Eu shell. Eu shell size of the Eu-silica particles ranged from 5 to 38 nm with varying concentration of silica particles.

Original language	English
Pages (from-to)	109-114
Number of pages	6
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	326
Issue number	1-2
DOIs	https://doi.org/10.1016/j.colsurfa.2008.05.017
Publication status	Published - 2008 Aug 15

Keywords

Core-shell
Europium
Homogeneous precipitation
Particle
Silica

ASJC Scopus subject areas

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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AU - Kobayashi, Y.

AU - Imai, J.

AU - Nagao, D.

AU - Konno, M.

PY - 2008/8/15

Y1 - 2008/8/15

N2 - This paper describes a method for Eu-coating of submicron-sized silica particles. The core silica particles with an average size of 333 nm were prepared with Stöber method. The Eu-coating was performed in a water/propanol solvent in the presence of silica particles and europium acetate with a homogeneous precipitation method with the use of urea. Transmission electron microscopy (TEM) observation and measurements of ζ-potentials revealed that the silica particles were successfully coated with Eu shell. Eu shell size of the Eu-silica particles ranged from 5 to 38 nm with varying concentration of silica particles.

AB - This paper describes a method for Eu-coating of submicron-sized silica particles. The core silica particles with an average size of 333 nm were prepared with Stöber method. The Eu-coating was performed in a water/propanol solvent in the presence of silica particles and europium acetate with a homogeneous precipitation method with the use of urea. Transmission electron microscopy (TEM) observation and measurements of ζ-potentials revealed that the silica particles were successfully coated with Eu shell. Eu shell size of the Eu-silica particles ranged from 5 to 38 nm with varying concentration of silica particles.

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KW - Europium

KW - Homogeneous precipitation

KW - Particle

KW - Silica

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