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首页> 外文期刊>RSC Advances >Facile synthesis of 3D flower-like Pt nanostructures on polypyrrole nanowire matrix for enhanced methanol oxidation
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Facile synthesis of 3D flower-like Pt nanostructures on polypyrrole nanowire matrix for enhanced methanol oxidation

机译：增强甲醇氧化滤氮基体3D花样PT纳米结构的体积合成

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摘要

Here we report the simple and rapid synthesis of three-dimension Pt flower-like nanostructures (PtNFs) on a polypyrrole nanowires (PPyNWs) matrix. Both PtNFs and PPyNWs are prepared by an electrochemical approach without using any seed, template or surfactant. The morphology and chemical composition of the resulting PtNF/PPyNWs hybrids are characterized by scanning electron microscopy and by X-ray photoelectron spectroscopy, respectively. Taking methanol oxidation as a model catalysis reaction, the electrocatalytic performance of the as-prepared PtNF/PPyNWs system has been evaluated by cyclic voltammetry and chronoamperometry, evidencing that these 3D materials exhibit excellent electrocatalytic activity and high level of poisoning tolerance to the carbonaceous oxidative intermediates. Such electrocatalytic performances can be ascribed to the combined effect of the flower-like structure promoting the exposure of more sites and the polymer nanowires matrix endorsing high dispersion of PtNF on a high electrochemically active surface area, besides the removal of sub-products from electrocatalytic sites.
机译：在这里，我们报道了在聚吡咯纳米线（PPYNWS）基质上的三维PT花样纳米结构（PTNF）的简单快速合成。 PTNFS和PPYNW都是通过电化学方法制备的，而不使用任何种子，模板或表面活性剂。所得PTNF / PPYNWS杂交种的形态和化学成分分别通过扫描电子显微镜和X射线光电子能谱来表征。服用甲醇氧化作为模型催化反应，通过循环伏安法和计时法评估了制备的PTNF / PPYNWS系统的电催化性能，证明这些3D材料表现出优异的电催化活性和对碳质氧化中间体的高水平的中毒耐受性。除了从电催化位点的除去外，可以将这种电催化性能促进促进更多位点的暴露和高分子纳米线基质的促进更高分散的PTNF的聚合物纳米线基质的效果。

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  • 来源
    《RSC Advances》 |2018年第19期|共9页
  • 作者

    Mazzotta E.; Caroli A.; Pennetta A.; De Benedetto G. E.; Primiceri E.; Monteduro A. G.; Maruccio G.; Malitesta C.;

  • 作者单位

    Univ Salento Dipartimento Sci &

    Tecnol Biol Ambientali Via Monteroni I-73100 Lecce Italy;

    Univ Salento Dipartimento Sci &

    Tecnol Biol Ambientali Via Monteroni I-73100 Lecce Italy;

    Univ Salento Dipartimento Beni Culturali Via D Birago 64 I-73100 Lecce Italy;

    Univ Salento Dipartimento Beni Culturali Via D Birago 64 I-73100 Lecce Italy;

    CNR NANOTEC Inst Nanotechnol Campus Ecotekne Via Monteroni I-73100 Lecce Italy;

    CNR NANOTEC Inst Nanotechnol Campus Ecotekne Via Monteroni I-73100 Lecce Italy;

    CNR NANOTEC Inst Nanotechnol Campus Ecotekne Via Monteroni I-73100 Lecce Italy;

    Univ Salento Dipartimento Sci &

    Tecnol Biol Ambientali Via Monteroni I-73100 Lecce Italy;

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