Size Effect of Ruthenium Nanoparticles in Catalytic Carbon Monoxide Oxidation
Size Effect of Ruthenium Nanoparticles in Catalytic Carbon Monoxide Oxidation
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DOI：
10.1021/nl101700j
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发表时间：
2010-07-01
期刊：
影响因子：
10.8
通讯作者：
Somorjai, Gabor A.
中科院分区：
文献类型：
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作者：
Joo, Sang Hoon;Park, Jeong Y.;Somorjai, Gabor A.
空气中的一氧化碳氧化钌催化剂显示我们报告一个不寻常的催化行为对CO氧化/俄文纳米颗粒粒径影响(NP)催化剂均匀俄文NPs与可调粒度从2到6纳米合成的多元醇还原俄文(中航商用飞机有限公司)(3)前体的聚(乙烯吡咯烷酮)稳定器测量CO氧化催化活性的氧化反应条件下二维俄文NPs数组(40托公司CO的氧化活性随NP尺寸的增大而增大，其中6 nm的Ru NP催化剂的氧化活性是2 nm催化剂的8倍。本研究结果将为今后Ru基氧化催化剂的设计提供科学依据
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