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首页> 外文期刊>ChemPlusChem >Oxygen-Plasma-Functionalized Carbon Nanotubes as Supports for Platinum-Ruthenium Catalysts Applied in Electrochemical Methanol Oxidation
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Oxygen-Plasma-Functionalized Carbon Nanotubes as Supports for Platinum-Ruthenium Catalysts Applied in Electrochemical Methanol Oxidation

机译：氧血浆官能化碳纳米管作为施加在电化学甲醇氧化中的铂 - 钌催化剂的载体

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摘要

Multiwalled carbon nanotubes (CNTs) functionalized by oxygen plasma were used as a support for platinum-ruthenium nanoparticles for electrochemical methanol oxidation. The influence of plasma treatment time on the electrocatalytic activity was investigated by cyclic voltammetry, CO stripping voltammetry, and chronoamperometry. The electrocatalysts were characterized by Raman spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The results showed that oxygen plasma treatment led to the formation of -CO and -COO groups on the CNT surface. Platinum-ruthenium nanoparticles dispersed with an optimum plasma treatment time of 30 min exhibited the maximum catalytic activity towards methanol oxidation. The rationale for the high catalytic activity is discussed.
机译：用氧等离子体官能化的多壁碳纳米管（CNT）用作用于电化学甲醇氧化的铂 - 钌纳米粒子的载体。 通过循环伏安法，CO溶解伏安法和计时荧光测量研究等离子体处理时间对电催化活性的影响。 通过拉曼光谱，X射线光电子能谱，扫描电子显微镜，透射电子显微镜和X射线衍射表征电催化剂。 结果表明，氧等离子体处理导致CNT表面上的-CO和-COO基团的形成。 分散在30分钟的最佳等离子体处理时间的铂 - 钌纳米粒子表现出对甲醇氧化的最大催化活性。 讨论了高催化活性的基本原理。

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