Mesostructured Au/C materials obtained by replication of functionalized SBA-15 silica containing highly dispersed gold nanoparticles

Handle URI:
http://hdl.handle.net/10754/561601
Title:
Mesostructured Au/C materials obtained by replication of functionalized SBA-15 silica containing highly dispersed gold nanoparticles
Authors:
Kerdi, Fatmé; Caps, Valerie; Tuel, Alain
Abstract:
The preparation and characterization of highly dispersed gold nanoparticles in ordered mesoporous carbons CMK-3 are reported. These carbons were obtained using gold-containing functionalized SBA-15 silicas as hard templates. Two series of Au/SiO2 templates were prepared, depending on the nature of the functionalization molecule. While ammonium-functionalized silicas gave gold particles with a size determined by the pores of the silica support, the use of mercaptopropyltrimethoxysilane as grafting molecule afforded the possibility to control the particle size inside the mesopores. Both series gave highly ordered mesoporous carbons with gold particles incorporated in the carbon nanorods. However, the gold particle size in mesoporous carbons was the same for both series and apparently did not depend on the nature of the silica template. Both Au/SiO2 templates and their corresponding Au/CMK-3 materials have been characterized by X-ray diffraction, nitrogen adsorption/desorption, chemical analysis, solid-state nuclear magnetic resonance and transmission electron microscopy. They were also used as catalysts in the aerobic oxidation of cyclohexene and trans-stilbene in the liquid phase. © 2010 Elsevier Inc. All rights reserved.
KAUST Department:
KAUST Catalysis Center (KCC)
Publisher:
Elsevier BV
Journal:
Microporous and Mesoporous Materials
Issue Date:
Apr-2011
DOI:
10.1016/j.micromeso.2010.09.019
Type:
Article
ISSN:
13871811
Appears in Collections:
Articles; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorKerdi, Fatméen
dc.contributor.authorCaps, Valerieen
dc.contributor.authorTuel, Alainen
dc.date.accessioned2015-08-02T09:15:07Zen
dc.date.available2015-08-02T09:15:07Zen
dc.date.issued2011-04en
dc.identifier.issn13871811en
dc.identifier.doi10.1016/j.micromeso.2010.09.019en
dc.identifier.urihttp://hdl.handle.net/10754/561601en
dc.description.abstractThe preparation and characterization of highly dispersed gold nanoparticles in ordered mesoporous carbons CMK-3 are reported. These carbons were obtained using gold-containing functionalized SBA-15 silicas as hard templates. Two series of Au/SiO2 templates were prepared, depending on the nature of the functionalization molecule. While ammonium-functionalized silicas gave gold particles with a size determined by the pores of the silica support, the use of mercaptopropyltrimethoxysilane as grafting molecule afforded the possibility to control the particle size inside the mesopores. Both series gave highly ordered mesoporous carbons with gold particles incorporated in the carbon nanorods. However, the gold particle size in mesoporous carbons was the same for both series and apparently did not depend on the nature of the silica template. Both Au/SiO2 templates and their corresponding Au/CMK-3 materials have been characterized by X-ray diffraction, nitrogen adsorption/desorption, chemical analysis, solid-state nuclear magnetic resonance and transmission electron microscopy. They were also used as catalysts in the aerobic oxidation of cyclohexene and trans-stilbene in the liquid phase. © 2010 Elsevier Inc. All rights reserved.en
dc.publisherElsevier BVen
dc.subjectAerobic oxidationen
dc.subjectCarbonen
dc.subjectGolden
dc.subjectNanocastingen
dc.subjectStructure replicationen
dc.titleMesostructured Au/C materials obtained by replication of functionalized SBA-15 silica containing highly dispersed gold nanoparticlesen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.identifier.journalMicroporous and Mesoporous Materialsen
dc.contributor.institutionUniv Lyon 1, IRCELYON, Inst Rech Catalyse & Environm Lyon, CNRS,UMR 5256, F-69626 Villeurbanne, Franceen
kaust.authorCaps, Valerieen
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