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首页> 外文期刊>Materials Letters >One-step synthesis of nanocrystalline TiO_2-coated carbon nanotube support for Pt electrocatalyst in direct methanol fuel cell
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One-step synthesis of nanocrystalline TiO_2-coated carbon nanotube support for Pt electrocatalyst in direct methanol fuel cell

机译:直接甲醇燃料电池中Pt电催化剂的纳米晶TiO_2包覆碳纳米管载体的一步合成

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摘要

One-step synthesis of nanocrystalline TiO_2-coated carbon nanotube (TiO_2/CNT) was conducted using a non-boiling isothermal hydrolyzing process without post-heating treatment for crystallization, followed by dispersed Pt nanoparticles (NPs) on it employing a conventional microwave-assisted ethylene glycol method. The coating of TiO_2 was thin and uniform, Pt NPs homogeneously dispersing on the surface of TiO_2. The TiO_2/CNT supported Pt electrocatalyst exhibited an excellent electrocatalytic performance toward methanol oxidation. Especially under UV irradiation, the peak current density of methanol oxidation jumped up to 4.65 mA cm~(-2), about 2.5 times as that in the dark. The excellent performance was mainly ascribed to the synergistic effect between Pt and anatase TiO_2.
机译:使用非沸腾的等温水解工艺进行一步合成纳米TiO_2包覆的碳纳米管(TiO_2 / CNT),无需进行后热处理即可结晶,然后使用常规微波辅助在其上分散Pt纳米颗粒(NPs)乙二醇法。 TiO_2的涂层薄而均匀,Pt NPs均匀地分散在TiO_2的表面上。 TiO_2 / CNT负载的Pt电催化剂对甲醇氧化表现出优异的电催化性能。特别是在紫外线照射下,甲醇氧化的峰值电流密度跃升至4.65 mA cm〜(-2),约为黑夜的2.5倍。优异的性能主要归因于Pt与锐钛矿型TiO_2的协同作用。

著录项

  • 来源
    《Materials Letters》 |2014年第15期|335-338|共4页
  • 作者单位

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R. China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R. China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R. China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R. China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R. China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Deposition; Nanocomposites; Electrocatalytic activity;

    机译:沉积纳米复合材料;电催化活性;

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