Catalytic CO oxidation of palladium nanoparticles formed by one-step synthesis on polycarbosilane nanowires
Catalytic CO oxidation of palladium nanoparticles formed by one-step synthesis on polycarbosilane nanowires
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DOI：
10.1088/2053-1591/aad122
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发表时间：
2018-07
影响因子：
2.3
通讯作者：
S. Tsukuda;A. Idesaki;M. Sugimoto;S. Seki;T. Omata
中科院分区：
文献类型：
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作者：
S. Tsukuda;A. Idesaki;M. Sugimoto;S. Seki;T. Omata
以聚碳硅烷（PCS）纳米线为载体，采用湿法和干法制备了一锅法制备了钯纳米粒子（Pd NPs）。由于Pd离子的现场还原，沿纳米线直接形成了相对较小的Pd NPs，其直径约为2 nm，尺寸分布较窄。特别是，在180°C的温度下，由乙酰丙酮酸Pd（II）蒸汽干法制备的负载型Pd NPs比湿法制备的Pd NPs具有更高的数字密度。此外，在200℃的高温下，对所制备的Pd/PCS纳米线对CO的氧化活性进行了评价。在Pd/PCS纳米线的存在下，即使在低于120℃的温度下，CO分子也完全转化为CO2。
A one-pot synthesis of palladium nanoparticles (Pd NPs) supported on polycarbosilane (PCS) nanowires, which also served as reducing agents, was conducted using wet and dry processing methods. Relatively small Pd NPs with diameters of approximately 2 nm and narrow size distributions were directly formed along the nanowires without aggregation owing to the on-site reduction of Pd ions. In particular, the supported Pd NPs prepared from Pd(II) acetylacetonate vapor through dry processing at a temperature of 180 °C exhibited a higher number density as compared with that of the Pd NPs fabricated through wet processing. In addition, the catalytic activity of the obtained Pd/PCS nanowires for the oxidation of CO was evaluated up to 200 °C. The CO molecules were completely converted to CO2 in the presence of Pd/PCS nanowires even at temperatures below 120 °C.