Innovative preparation of Au/C by replication of gold-containing mesoporous silica catalysts

Fatmé Kerdi; Valerie Caps; Alain Tuel

doi:10.1016/S0167-2991(10)75028-X

Innovative preparation of Au/C by replication of gold-containing mesoporous silica catalysts

Fatmé Kerdi, Valerie Caps, Alain Tuel

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 Scopus citations

Abstract

A new strategy, based on the nanocasting concept, has been used to prepare gold nanoparticles (NPs) highly dispersed in meso-structured carbons. Gold is first introduced in various functionalized mesostructured silicas (MCM-48 and SBA-15) and particles are formed inside the porosity upon reduction of Au 3+ cations. Silica pores are then impregnated with a carbon precursor and the composite material is heated at 900°C under vacuum. Silica is then removed by acid leaching, leading to partially encapsulated gold particles in mesoporous carbon. Carbon prevents aggregation of gold particles at high temperature, both the mean size and distribution being similar to those observed in silica. However, while Au@SiO2 exhibit significant catalytic activity in the aerobic oxidation of trans-stilbene in the liquid phase, its Au@C mesostructured replica is quite inactive. © 2010 Elsevier B.V. All rights reserved.

Original language	English (US)
Title of host publication	Scientific Bases for the Preparation of Heterogeneous Catalysts - Proceedings of the 10th International Symposium, Louvain-la-Neuve, Belgium, July 11-15, 2010
Publisher	Elsevier BV
Pages	221-224
Number of pages	4
ISBN (Print)	9780444536013
DOIs	https://doi.org/10.1016/S0167-2991(10)75028-X
State	Published - 2010

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry
Catalysis
Materials Chemistry
Surfaces, Coatings and Films

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10.1016/S0167-2991(10)75028-X

Cite this

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title = "Innovative preparation of Au/C by replication of gold-containing mesoporous silica catalysts",

abstract = "A new strategy, based on the nanocasting concept, has been used to prepare gold nanoparticles (NPs) highly dispersed in meso-structured carbons. Gold is first introduced in various functionalized mesostructured silicas (MCM-48 and SBA-15) and particles are formed inside the porosity upon reduction of Au 3+ cations. Silica pores are then impregnated with a carbon precursor and the composite material is heated at 900°C under vacuum. Silica is then removed by acid leaching, leading to partially encapsulated gold particles in mesoporous carbon. Carbon prevents aggregation of gold particles at high temperature, both the mean size and distribution being similar to those observed in silica. However, while Au@SiO2 exhibit significant catalytic activity in the aerobic oxidation of trans-stilbene in the liquid phase, its Au@C mesostructured replica is quite inactive. {\textcopyright} 2010 Elsevier B.V. All rights reserved.",

author = "Fatm{\'e} Kerdi and Valerie Caps and Alain Tuel",

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Innovative preparation of Au/C by replication of gold-containing mesoporous silica catalysts. / Kerdi, Fatmé; Caps, Valerie; Tuel, Alain.
Scientific Bases for the Preparation of Heterogeneous Catalysts - Proceedings of the 10th International Symposium, Louvain-la-Neuve, Belgium, July 11-15, 2010. Elsevier BV, 2010. p. 221-224.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Innovative preparation of Au/C by replication of gold-containing mesoporous silica catalysts

AU - Kerdi, Fatmé

AU - Caps, Valerie

AU - Tuel, Alain

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2010

Y1 - 2010

N2 - A new strategy, based on the nanocasting concept, has been used to prepare gold nanoparticles (NPs) highly dispersed in meso-structured carbons. Gold is first introduced in various functionalized mesostructured silicas (MCM-48 and SBA-15) and particles are formed inside the porosity upon reduction of Au 3+ cations. Silica pores are then impregnated with a carbon precursor and the composite material is heated at 900°C under vacuum. Silica is then removed by acid leaching, leading to partially encapsulated gold particles in mesoporous carbon. Carbon prevents aggregation of gold particles at high temperature, both the mean size and distribution being similar to those observed in silica. However, while Au@SiO2 exhibit significant catalytic activity in the aerobic oxidation of trans-stilbene in the liquid phase, its Au@C mesostructured replica is quite inactive. © 2010 Elsevier B.V. All rights reserved.

AB - A new strategy, based on the nanocasting concept, has been used to prepare gold nanoparticles (NPs) highly dispersed in meso-structured carbons. Gold is first introduced in various functionalized mesostructured silicas (MCM-48 and SBA-15) and particles are formed inside the porosity upon reduction of Au 3+ cations. Silica pores are then impregnated with a carbon precursor and the composite material is heated at 900°C under vacuum. Silica is then removed by acid leaching, leading to partially encapsulated gold particles in mesoporous carbon. Carbon prevents aggregation of gold particles at high temperature, both the mean size and distribution being similar to those observed in silica. However, while Au@SiO2 exhibit significant catalytic activity in the aerobic oxidation of trans-stilbene in the liquid phase, its Au@C mesostructured replica is quite inactive. © 2010 Elsevier B.V. All rights reserved.

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U2 - 10.1016/S0167-2991(10)75028-X

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M3 - Conference contribution

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BT - Scientific Bases for the Preparation of Heterogeneous Catalysts - Proceedings of the 10th International Symposium, Louvain-la-Neuve, Belgium, July 11-15, 2010

PB - Elsevier BV

ER -

Innovative preparation of Au/C by replication of gold-containing mesoporous silica catalysts

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