Ultralow Loading Pt Nanocatalysts Prepared by Atomic Layer Deposition on Carbon Aerogels
Nano Letters2008Vol. 8(8), pp. 2405–2409
Citations Over TimeTop 10% of 2008 papers
J. S. King, Arne Wittstock, Juergen Biener, S. O. Kucheyev, Yinmin M. Wang, Theodore F. Baumann, Sandeep K. Giri, Alex V. Hamza, Marcus Baeumer, Stacey F. Bent
Abstract
Using atomic layer deposition (ALD), we show that Pt 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 approximately 0.05 mg Pt/cm2. 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.
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