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首页> 外文期刊>RSC Advances >Palladium dispersed in three-dimensional polyaniline networks as the catalyst for hydrogen peroxide electro-reduction in an acidic medium
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Palladium dispersed in three-dimensional polyaniline networks as the catalyst for hydrogen peroxide electro-reduction in an acidic medium

机译：钯分散在三维聚苯胺网络中作为酸性介质中过氧化氢电解的催化剂

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摘要

A novel Pd/polyaniline/CFC electrode is prepared by electroless deposition of palladium (Pd) onto three- dimensional polyaniline networks. The polyaniline matrix on the carbon fiber cloth (CFC) in the reduction state is electro-synthesized by cyclic voltammetry and has a lower vertex potential of -0.4 V vs. Ag/ AgCl. The particle size of the Pd coated on the polyaniline chains is gradiently distributed. The as- prepared Pd/polyaniline/CFC electrode is characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FITR) and X-ray diffraction (XRD). The hydrogen peroxide (H2O2) electro-reduction reaction in H2SO4 solutions on the Pd/polyaniline/CFC electrode is investigated using cyclic voltammetry (CV), linear sweep voltammetry (LSV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS). The results reveal that the electrode exhibited high catalytic activity and excellent stability in the strong oxidizing solution of H2O2 and H2SO4. Polyaniline itself shows electro- catalytic activity towards H2O2 to some extent involving the chemical-electrochemical (C-E) coupling mechanism.
机译：通过将钯（Pd）的无电沉积到三维聚苯胺网络中，制备新的Pd /聚酰氯/ CFC电极。碳纤维布（CFC）上的聚苯胺基质通过循环伏安法电合成，具有-0.4V与Ag / AgCl的较低的顶点电位。涂覆在聚苯胺链上的PD的粒径是梯度分布的。后原样制备的Pd /聚苯胺/ CFC电极使用扫描电子显微镜（SEM），傅里叶变换红外光谱（FITR）和X射线衍射（XRD）表征。使用环状伏安法（CV），线性扫描伏安法（LSV），计时率（CA）和电化学阻抗谱（EIS）研究了在Pd /聚酰胺/ CFC电极上的H 2 SO 4溶液中的过氧化氢（H2O2）电解反应。结果表明，电极在H 2 O 2和H 2 SO 4的强氧化溶液中表现出高催化活性和优异的稳定性。聚苯胺本身在一定程度上显示出朝向H 2 O 2的电催化活性涉及化学电化学（C-E）偶联机制。

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  • 来源
    《RSC Advances》 |2015年第114期|共8页
  • 作者

    Fen Guo; Ke Ye; Xiaomei Huang;

  • 作者单位

    Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 P.R. China.;

    Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 P.R. China.;

    Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 P.R. China.;

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  • 正文语种 eng
  • 中图分类 化学;
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