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首页> 外文期刊>Quantum Beam Science >Fabrication of Size- and Shape-Controlled Platinum Cones by Ion-Track Etching and Electrodeposition Techniques for Electrocatalytic Applications
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Fabrication of Size- and Shape-Controlled Platinum Cones by Ion-Track Etching and Electrodeposition Techniques for Electrocatalytic Applications

机译：通过离子轨道蚀刻和电沉积技术制造尺寸和形状控制的铂锥体，用于电催化应用

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The micro/nanocone structures of noble metals play a critical role as heterogeneous electrocatalysts that provide excellent activity. We successfully fabricated platinum cones by electrodeposition using non-penetrated porous membranes as templates. This method involved the preparation of template membranes by the swift-heavy-ion irradiation of commercially available polycarbonate films and subsequent chemical etching in an aqueous NaOH solution. The surface diameter, depth, aspect ratio and cone angle of the resulting conical pores were controlled in the ranges of approximately 70–1500 nm, 0.7–11 μm, 4–12 and 5–13°, respectively, by varying the etching conditions, which finally produced size- and shape-controlled platinum cones with nanotips. In order to demonstrate the electrocatalytic activity, electrochemical measurements were performed for the ethanol oxidation reaction. The oxidation activity was found to be up to 3.2 times higher for the platinum cone arrays than for the platinum plate. Ion-track etching combined with electrodeposition has the potential to be an effective method for the fabrication of micro/nanocones with high electrocatalytic performance.
机译：贵金属的微/纳米织物结构在提供优异的活性的非均相电催化剂中起重要作用。我们通过使用非穿透多孔膜作为模板，通过电沉积成功地制造了铂锥。该方法涉及通过市售聚碳酸酯薄膜的迅速重离子照射和在NaOH水溶液中进行化学蚀刻来制备模板膜。通过改变蚀刻条件，将所得圆锥形孔的表面直径，深度，纵横比和锥角分别控制在约70-1500nm，0.7-11μm，4-12和5-13°的范围内。最终用纳米以纳米以纳米产生尺寸和形状控制的铂锥。为了证明电催化活性，对乙醇氧化反应进行电化学测量。氧化活性比铂板阵列高达3.2倍。与电沉积相结合的离子轨道蚀刻具有具有高电催化性能的微/纳中的有效方法。

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