Ultralow loading Pt nanocatalysts prepared by atomic layer deposition on carbon aerogels

被引：220

作者：

King, Jeffrey S. ^{[2
]}

Wittstock, Arne ^{[1
,3
]}

Biener, Juergen ^{[1
]}

Kucheyev, Sergei O. ^{[1
]}

Wang, Yinmin M. ^{[1
]}

Baumann, Theodore F. ^{[1
]}

Giri, Sandeep K. ^{[2
]}

Hamza, Alex V. ^{[1
]}

Baeumer, Marcus ^{[3
]}

Bent, Stacey F. ^{[2
]}

机构：

[1] Lawrence Livermore Natl Lab, Nanoscale Synth & Characterizat Lab, Livermore, CA 94550 USA

[2] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

[3] Univ Bremen, Inst Angew & Phys Chem, D-28359 Bremen, Germany

来源：

NANO LETTERS | 2008年 / 8卷 / 08期

关键词：

D O I：

10.1021/nl801299z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Using atomic layer deposition (ALD), we show that lot nanoparticles can be deposited on the inner surfaces of carbon aerogels (CA). The resultant Pt-loaded materials exhibit high catalytic activity for the oxidation of CO even at loading levels as low as similar to 0.05 mg Pt/cm(2). We observe a conversion efficiency of nearly 100% in the 150-250 degrees C temperatures range, and the total conversion rate seems to be limited only by the thermal stability of the CA support in ambient oxygen. The ALD approach described here is universal in nature, and can be applied to the design of new catalytic materials for a variety of applications, including fuel cells, hydrogen storage, pollution control, green chemistry, and liquid fuel production.

引用

页码：2405 / 2409

页数：5

共 18 条

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