Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794-3400, USA.
Nano Lett. 2010 Aug 11;10(8):2806-11. doi: 10.1021/nl100718k.
We report on the synthesis, characterization, and electrocatalytic performance of ultrathin Pt nanowires with a diameter of less than 2 nm. An acid-wash protocol was employed in order to yield highly exfoliated, crystalline nanowires with a diameter of 1.3 +/- 0.4 nm. The electrocatalytic activity of these nanowires toward the oxygen reduction reaction was studied in relation to the activity of both supported and unsupported Pt nanoparticles as well as with previously synthesized Pt nanotubes. Our ultrathin, acid-treated, unsupported nanowires displayed an electrochemical surface area activity of 1.45 mA/cm(2), which was nearly 4 times greater than that of analogous, unsupported platinum nanotubes and 7 times greater than that of commercial supported platinum nanoparticles.
我们报告了一种超精细的铂纳米线的合成、表征和电催化性能，其直径小于 2nm。采用酸处理方案以获得高度剥离的、结晶的纳米线，直径为 1.3±0.4nm。研究了这些纳米线对氧还原反应的电催化活性与负载和未负载的 Pt 纳米颗粒以及之前合成的 Pt 纳米管的活性之间的关系。我们的超薄、酸处理、无载体纳米线的电化学表面积活性为 1.45mA/cm(2)，几乎是类似的、无载体铂纳米管的 4 倍，是商业负载铂纳米颗粒的 7 倍。
Zotero 插件