Preparation and Catalytic Performance of Highly Stable Silica-Coated Gold Nanorods Supported on Alumina

Shape-controlled metal nanocrystals such as nanorods are attractive because of their potential novel catalytic properties. It is important to improve the stability of the shape-controlled nanocrystals to be applied as nanocatalysts. In this study, α-Al2O3-supported Au nanorods (AuNR/α-Al2O3) and sil...

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Bibliographic Details
Published in:Bulletin of the Chemical Society of Japan 2021-06, Vol.94 (6), p.1685-1689
Main Authors: Imura, Yoshiro, Fukuda, Kunihiro, Saito, Haruna, Maniwa, Motoki, Kurihara, Yusuke, Morita-Imura, Clara, Kawai, Takeshi
Format: Article
Language:English
Subjects:
Acetophenone
Alcohol
Aluminum oxide
Control stability
Gold
Gold coatings
Nanocrystals
Nanoparticles
Nanorods
Oxidation
Phenylethyl alcohol
Silicon dioxide
Thermal stability
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Summary:Shape-controlled metal nanocrystals such as nanorods are attractive because of their potential novel catalytic properties. It is important to improve the stability of the shape-controlled nanocrystals to be applied as nanocatalysts. In this study, α-Al2O3-supported Au nanorods (AuNR/α-Al2O3) and silica-coated α-Al2O3-supported Au nanorods (SiO2/AuNR/α-Al2O3) were prepared as alcohol oxidation catalysts for the transformation of 1-phenylethyl alcohol to acetophenone. The formation rate of acetophenone over AuNR/α-Al2O3 is higher than that over α-Al2O3-supported spherical Au nanoparticles obtained by calcining AuNR/α-Al2O3. In addition, SiO2/AuNR/α-Al2O3 exhibits higher catalytic performance and thermal stability than those of AuNR/α-Al2O3 in alcohol oxidation.
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.20210074