Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 155, Issue -, Pages 215-219Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2012.02.006
Keywords
Ceria; Mesoporous silica; Encapsulation; Template synthesis
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Funding
- Council for Scientific and Industrial Research
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Ultra small ceria nanoparticles of sizes <2 nm stable at 500 degrees C are encapsulated in the channels of mesoporous silica by employing a novel method of synthesis. The method involves modifying non-ionic polymer templates with ionic surfactants to enhance anchoring of metal ion precursors. In this way, further silica wall formation around the template ensures isolation of the nanoparticles exclusively within the channels after template removal by heat treatment. Further understanding of the interaction of the composite template system and cerium precursor is gained by cyclic voltammetric studies. (C) 2012 Elsevier Inc. All rights reserved.
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