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首页> 外文期刊>RSC Advances >Electrospun polyacrylonitrile nanofibers supported alloyed Pd-Pt nanoparticles as recyclable catalysts for hydrogen generation from the hydrolysis of ammonia borane
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Electrospun polyacrylonitrile nanofibers supported alloyed Pd-Pt nanoparticles as recyclable catalysts for hydrogen generation from the hydrolysis of ammonia borane

机译：电纺聚丙烯腈纳米纤维支撑合金化PD-PT纳米粒子作为来自氨硼烷水解的氢气的可回收催化剂

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摘要

Herein, we report the fabrication of polyacrylonitrile (PAN) nanofibers supported Pd-Pt alloy nanoparticles (PAN/Pd-Pt) through a simple and reliable approach by combining an electrospinning technique and in situ reduction process. The resulting PAN/Pd-Pt membranes are composed of a well-defined fiber-like structure with uniform sizes. Pd-Pt alloy nanoparticles are well dispersed on the surface of PAN nanofibers and the composition of alloy nanoparticles can be regulated through adjusting the feed molar ratio of Na2PdCl4 and K2PtCl4. The obtained products are characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) measurements. The as-prepared PAN/Pd-Pt composite exhibits a remarkable catalytic performance towards the hydrogen generation from the hydrolysis of ammonia borane (NH3BH3, AB). By tuning the composition of the alloy nanoparticles of the nanocatalyst, a turnover frequency (TOF) of 51.9 mol H2 min~(-1) (mol Pd-Pt alloy) ~(-1) was achieved, much higher than Pd and Pt-based nanocatalysts. In addition, the as-prepared PAN/Pd-Pt composite nanofibers show good recycling stability, as the catalyst can be easily separated from the suspension system. The electrospun nanofiber membrane supported noble metal nanoalloy catalysts shows high potential to find applications for the development of hydrogen generation for clean energy.
机译：在此，通过组合静电纺丝技术和原位还原过程，通过简单且可靠的方法报告聚丙烯腈（锅）纳米纤维的制造支持的PD-PT合金纳米粒子（PAN / PD-PT）。所得锅/ pd-pt膜由具有均匀尺寸的明确定义的纤维状结构组成。 PD-Pt合金纳米颗粒在锅纳米纤维的表面上很好地分散在纳米纤维表面上，并且可以通过调节Na 2 PdCl4和K2PTCl4的饲料摩尔比来调节合金纳米颗粒的组成。所得产物的特征在于扫描电子显微镜（SEM），透射电子显微镜（TEM），X射线衍射（XRD）和X射线光电子光谱（XPS）测量。由制备的PAN / PD-PT复合材料表现出从氨硼烷水解（NH 3BH3，AB）的氢气产生的显着催化性能。通过调节纳米催化剂合金纳米颗粒的组成，实现51.9mol H 2 Min〜（-1）（Mol Pd-Pt合金）〜（-1）的周转频率（TOF），远高于Pd和pt-基于纳米催化剂。此外，当催化剂可以容易地与悬浮体系分离，所制备的平底锅/ Pd-PT复合纳米纤维显示出良好的再循环稳定性。静电型纳米纤维膜负载贵金属纳米铝催化剂显示出高潜力，以寻找用于清洁能量的氢气产生的应用。

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  • 来源
    《RSC Advances》 |2015年第114期|共6页
  • 作者

    Zhen Zhang; Yanzhou Jiang; Maoqiang Chi;

  • 作者单位

    Alan G. MacDiarmid Institute College of Chemistry Jilin University Changchun 130012 P. R. China.;

    Alan G. MacDiarmid Institute College of Chemistry Jilin University Changchun 130012 P. R. China.;

    Alan G. MacDiarmid Institute College of Chemistry Jilin University Changchun 130012 P. R. China.;

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  • 正文语种 eng
  • 中图分类 化学;
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