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Joo, Sang Hoon
Nanomaterials & Catalysis Lab
Research Interests
  • Catalyst, energy conversion, fuel cells, electrolyzer, ORR, HER, OER

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Size Effect of Ruthenium Nanoparticles in Catalytic Carbon Monoxide Oxidation

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Title
Size Effect of Ruthenium Nanoparticles in Catalytic Carbon Monoxide Oxidation
Author
Joo, Sang HoonPark, Jeong Y.Renzas, J. RussellButcher, Derek R.Huang, WenyuSomorjai, Gabor A.
Keywords
Carbon monoxide oxidation; Catalytic activity; Catalytic behavior; CO oxidation; Future designs; Nano-catalyst; Oxidation catalysts; Particle size effect; Poly(vinyl pyrrolidone); Reaction conditions; Ru nanoparticles; Ru(acac); Ruthenium catalysts; Ruthenium Nanoparticles; Size effects
Issue Date
201007
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.10, no.7, pp.2709 - 2713
Abstract
Carbon monoxide oxidation over ruthenium catalysts has shown an unusual catalytic behavior Here we report a particle size effect on CO oxidation over Ru nanoparticle (NP) catalysts Uniform Ru NPs with a tunable particle size from 2 to 6 nm were synthesized by a polyol reduction of Ru(acac)(3) precursor in the presence of poly(vinylpyrrolidone) stabilizer The measurement of catalytic activity of CO oxidation over two-dimensional Ru NPs arrays under oxidizing reaction conditions (40 Torr CO and 100 Torr O(2)) showed an activity dependence on the Ru NP size The CO oxidation activity increases with NP size, and the 6 nm Ru NP catalyst shows 8-fold higher activity than the 2 nm catalysts The results gained from this study will provide the scientific basis for future design of Ru-based oxidation catalysts.
URI
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DOI
http://dx.doi.org/10.1021/nl101700j
ISSN
1530-6984
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