A Sinter-Resistant Catalytic System Based on Platinum Nanoparticles Supported on TiO2 Nanofibers and Covered by Porous Silica

被引：119

作者：

Dai, Yunqian ^{[1
,2
]}

Lim, Byungkwon ^{[1
]}

Yang, Yong ^{[3
]}

Cobley, Claire M. ^{[1
]}

Li, Weiyang ^{[1
]}

Cho, Eun Chul ^{[1
]}

Grayson, Benjamin ^{[4
]}

Fanson, Paul T. ^{[4
]}

Campbell, Charles T. ^{[3
]}

Sun, Yueming ^{[2
]}

Xia, Younan ^{[1
]}

机构：

[1] Washington Univ, Dept Biomed Engn, St Louis, MO 63130 USA

[2] Southeast Univ, Sch Chem & Chem Engn, Nanjing 211189, Jiangsu, Peoples R China

[3] Univ Washington, Dept Chem, Seattle, WA 98195 USA

[4] Toyota Motor Engn & Mfg N Amer Inc, Ann Arbor, MI 48105 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2010年 / 49卷 / 44期

基金：

美国国家科学基金会;

关键词：

nanostructures; platinum; silica; sinter resistance; supported catalysts; SHAPE-CONTROLLED SYNTHESIS; MESOPOROUS SILICA; SHELL; NANOCRYSTALS; NANOSTRUCTURES; NANOWIRES; OXIDATION; FUNCTIONALIZATION; HYDROGENATION; FABRICATION;

D O I：

10.1002/anie.201001839

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Holey support: The generation of a porous coating of SiO2 on Pt-decorated TiO2 nanofibers enables the preparation of a sinter-resistant catalytic system (see picture). The Pt nanoparticles could resist sintering at temperatures up to 750C in air, as the SiO2 coating acts as a physical barrier that slows down surface migration, but the system remained catalytically active because of the porous nature of the coating. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：8165 / 8168

页数：4

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