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Issue 12, 2005
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Coating and photochemical properties of calcia-doped ceria with amorphous silica by a seeded polymerization technique

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Abstract

Calcia doped ceria is of potential interest as an ultraviolet (UV) radiation blocking material in personal care products because of its excellent UV light absorption properties and its low catalytic ability for the oxidation of organic materials is superior to undoped ceria. In order to reduce the oxidation catalytic activity further, calcia doped ceria was coated with amorphous silica by means of a seeded polymerization technique. The silica shell was confirmed using scanning electron microscopy, TEM, XPS and FT-IR. Silica coating by seeded polymerization was much more efficient in the reduction of the oxidation catalytic activity without loss of the UV-shielding ability, than coating by acid hydrolysis of a sodium silicate solution.

Graphical abstract: Coating and photochemical properties of calcia-doped ceria with amorphous silica by a seeded polymerization technique

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Article information


Submitted
26 Oct 2004
Accepted
21 Dec 2004
First published
26 Jan 2005

J. Mater. Chem., 2005,15, 1293-1297
Article type
Paper

Coating and photochemical properties of calcia-doped ceria with amorphous silica by a seeded polymerization technique

A. M. El-Toni, S. Yin, Y. Hayasaka and T. Sato, J. Mater. Chem., 2005, 15, 1293
DOI: 10.1039/B416459H

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