Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.actamat.2010.04.004
Title: Ag/Au-decorated Fe 3O 4/SiO 2 composite nanospheres for catalytic applications
Authors: Li, L. 
Choo, E.S.G.
Tang, X. 
Ding, J. 
Xue, J. 
Keywords: Catalytic
Composite
Nanoparticle
Silica
Superparamagnetic
Issue Date: Jun-2010
Citation: Li, L., Choo, E.S.G., Tang, X., Ding, J., Xue, J. (2010-06). Ag/Au-decorated Fe 3O 4/SiO 2 composite nanospheres for catalytic applications. Acta Materialia 58 (11) : 3825-3831. ScholarBank@NUS Repository. https://doi.org/10.1016/j.actamat.2010.04.004
Abstract: Noble metal particles in nanoscale (Au, Ag, Pt, etc.) have attracted intensive research interest due to their promising catalysis properties. However, the practical applications of these nanoparticle catalysts are always jeopardized by two problems. One is the difficulty in recovering the used nanoparticles and the other arises from the low catalytic efficiency due to the aggregation of the nanoparticles. In this work, Ag/Au nanoparticles were distributed onto spherical superparamagnetic carriers (SSCNs), which were fabricated through a facile oil-in-DEG emulsion route. The Ag/Au nanoparticles were attached onto the SSCNs by two steps. The Au seeds were attached onto the silica surface through electrostatic attraction first, and the Ag nanoparticles were grown on the basis of the Au seeds. The obtained Ag/Au-SSCN composite nanospheres demonstrated promising catalytic properties, which could also be recycled very easily by using a magnet. © 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Source Title: Acta Materialia
URI: http://scholarbank.nus.edu.sg/handle/10635/86183
ISSN: 13596454
DOI: 10.1016/j.actamat.2010.04.004
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