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Easy synthesis of highly monodispersed silica@M (M = Ag, Au, Pd, Pt) particles using thiol compounds as a connecting agent

Title
Easy synthesis of highly monodispersed silica@M (M = Ag, Au, Pd, Pt) particles using thiol compounds as a connecting agent
Author
오성근
Keywords
Silica@noble metal particles; Sol-gel reaction; Silica; Coating; Hybrid particles
Issue Date
2011-08
Publisher
Korean ASSOC Crystal Growth
Citation
Journal of Ceramic Processing Research, 2011, 12(4), P.456-461
Abstract
Silica@M (M = Ag, Au, Pd, Pt) particles were prepared by accumulating noble metal nanoparticles on the surface of thiol-functionalized silica as a substrate, which was accomplished by the strong interaction between noble metal nanoparticles and thiol groups. In the conventional method, the fabrication of metal coated silica spheres by LBL (layer-by-layer) or core-shell synthesis is not efficient due to the complexity of the synthetic method, the low surface coverage of functional groups on the particles, and the low loading capacity of noble metal particles. The synthetic method in this study could overcome these limitations and make possible the simple preparation of the silica@M (M = Ag, Au, Pd, Pt) and hollow Pt metal particles with substantial metallic layers via a self-assembly behavior by a strong interaction between noble metal nanoparticles and thiol groups. Detailed characterizations of the silica@M (M = Ag, Au, Pd, Pt) and hollow Pt metal particles were performed to elucidate the surface and structural properties, the coordination of noble metals, and the crystalline structure of the noble metals on the surface by various analytical methods.
URI
https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART001627603
ISSN
1229-9162
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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