Growing Pt nanowires as a densely packed array on metal gauze
Growing Pt nanowires as a densely packed array on metal gauze
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DOI：
10.1021/ja074312e
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发表时间：
2007-09-05
影响因子：
15
通讯作者：
Xia, Younan
中科院分区：
文献类型：
--
作者：
Lee, Eric P.;Peng, Zhenmeng;Xia, Younan
本文介绍了直接在Pt或W制成的金属丝网表面上合成Pt的单晶纳米线，并展示了一种更有吸引力的方法用于在功能固体载体上生长Pt纳米线。有证据表明，纳米线的生长机制是相关的Pt前体的浓度和衬底的表面粗糙度。电化学测量表明，涂覆有Pt/SiO2的纱布的活性表面积比原始纱布大约2-3个数量级。本文所述的结果证明了一种新型的导电载体，其可用作燃料电池应用的活性组分和理想的3D模型催化剂。
This paper describes the synthesis of single-crystal nanowires of P't directly on the surface of metal gauze made of P't or W and demonstrates a more attractive approach for the growth of Pt nanowires; on functional solid supports. There is evidence that the growth mechanism of the nanowires is correlated to the concentration of the Pt precursor and the surface roughness of the substrate. Electrochemical measurements indicate that the active surface area of the P't nanowire-coated gauze is about 2-3 orders of magnitude greater than the pristine gauze. The results described herein demonstrate a new type of conductive support that can be used as active components for fuel cell applications and as an ideal 3D model catalyst.