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首页> 外文期刊>RSC Advances >Ultrasonic enhanced synthesis of multi-walled carbon nanotube supported Pt-Co bimetallic nanoparticles as catalysts for the oxygen reduction reaction
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Ultrasonic enhanced synthesis of multi-walled carbon nanotube supported Pt-Co bimetallic nanoparticles as catalysts for the oxygen reduction reaction

机译：多壁碳纳米管的超声波增强合成PT-Co双金属纳米粒子作为氧还原反应的催化剂

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摘要

Carbon material supported bi-or tri-metallic nanoparticles were usually used to replace noble metals, such as platinum, for improving catalytic performance and reducing the cost. In this paper, a carboxylate-functionalized multi-walled carbon nanotube supported bimetallic platinum-cobalt nanoparticles catalyst was synthesized using a simple one-step ultrasonic method. Electrochemical experiments showed that this catalyst exhibited excellent electrocatalytic activity in acid solution for the oxygen reduction reaction. In detail, the onset potential and half-wave potential of this catalyst positively shifted compared with the commercial platinum/carbon catalyst. The as-prepared catalyst also presented a high mass activity. Additionally, it showed a four-electron reduction pathway for the oxygen reduction reaction and exhibited better stability (about 82.8% current density was maintained) than platinum/carbon during the current durability test.
机译：支撑碳材料的双或三金属纳米颗粒通常用于替代贵金属，例如铂，以改善催化性能并降低成本。 本文使用简单的一步超声波方法合成了一种羧酸官能化的多壁碳纳米管支撑的双金属铂 - 钴纳米粒子催化剂。 电化学实验表明，该催化剂在氧溶液中表现出优异的电催化活性，用于氧还原反应。 详细地，与商业铂/碳催化剂相比，该催化剂的发病电位和半波电位正偏移。 制备的催化剂还呈现了高块状活性。 另外，它表明，在电流耐久性试验期间表现出氧还原反应的四氧化碳途径，并且在电流耐久性试验期间表现出比铂/碳的稳定性更好（保持电流密度约82.8％）。

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  • 来源
    《RSC Advances》 |2015年第41期|共5页
  • 作者

    Fu Shaofang; Yang Guohai; Zhou Yazhou; Pan Horng-Bin; Wai Chien M.; Du Dan; Lin Yuehe;

  • 作者单位

    Washington State Univ Dept Mech &

    Mat Engn Pullman WA 99163 USA;

    Washington State Univ Dept Mech &

    Mat Engn Pullman WA 99163 USA;

    Washington State Univ Dept Mech &

    Mat Engn Pullman WA 99163 USA;

    Univ Idaho Dept Chem Moscow ID 83844 USA;

    Univ Idaho Dept Chem Moscow ID 83844 USA;

    Washington State Univ Dept Mech &

    Mat Engn Pullman WA 99163 USA;

    Washington State Univ Dept Mech &

    Mat Engn Pullman WA 99163 USA;

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  • 正文语种 eng
  • 中图分类 化学;
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