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首页> 外文期刊>RSC Advances >Electro-catalysis of carbon black or titanium sub-oxide supported Pd-Gd towards formic acid electro-oxidation
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Electro-catalysis of carbon black or titanium sub-oxide supported Pd-Gd towards formic acid electro-oxidation

机译：炭黑或钛亚氧化钛的电催化负载PD-Gd朝向甲酸电氧化

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摘要

Carbon black supported Pd-Gd catalysts (Pd-xGd/C, x is weight percent in catalyst) with different amounts of Gd were prepared by a simultaneous reduction reaction with sodium borohydride in aqueous solution. The structure, morphology and element valence state of these catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS), respectively. The electro-catalytic performance of these catalysts for formic acid oxidation was investigated using cyclic voltammetry (CV), chronoamperometry (CA) and CO stripping experiments. It is found that the Pd-2.5Gd/C catalyst has a better electro-catalytic activity than the Pd/C catalyst, which can be explained by a bi-functional mechanism. In addition, the higher content of metallic Pd caused by the addition of Gd also contributes to the better catalytic activity of Pd-2.5Gd/C. Based on the good electro-catalytic performance of the Pd-2.5Gd/C, Pd-xGd/Ti4O7 (x stands for weight percentage in whole catalyst) catalysts were also prepared and characterized in the same way. The Pd-2.5Gd/Ti4O7 and Pd-4Gd/Ti4O7 catalysts exhibited better catalytic activities than the Pd-2.5Gd/C catalyst, which mainly results from the further increase of metallic Pd caused by Ti4O7.
机译：通过在水溶液中与硼氢化钠的同时还原反应同时还原反应，制备炭黑支持的Pd-Gd催化剂（Pd-XGD / C，X是催化剂中的重量百分比），通过在水溶液中同时还原反应来制备。这些催化剂的结构，形态和元素价值稳定性地通过X射线衍射（XRD），透射电子显微镜（TEM）和X射线光电子光谱（XPS）。使用循环伏安法（CV），计时率（CA）和CO溶液实验，研究了这些催化剂的甲酸氧化催化剂的电催化性能。发现PD-2.5GD / C催化剂具有比Pd / C催化剂更好的电催化活性，这可以通过双功能机制来解释。此外，由GD添加引起的金属Pd的含量较高也有助于PD-2.5GD / C的更好催化活性。基于PD-2.5GD / C的良好电催化性能，PD-XGD / Ti4O7（X代表全催化剂中的重量百分比）也制备催化剂并以相同的方式表征。 PD-2.5GD / TI4O7和PD-4GD / TI4O7催化剂表现出比PD-2.5GD / C催化剂更好的催化活性，主要由Ti4O7引起的金属Pd的进一步增加产生。

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  • 来源
    《RSC Advances》 |2016年第73期|共8页
  • 作者

    He Nan; Qin Chuanguang; Wang Rumin; Ma Shuhui; Wang Yi; Qi Tao;

  • 作者单位

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

    Northwestern Polytech Univ Sch Nat &

    Appl Sci Xian 710072 Peoples R China;

    Northwestern Polytech Univ Sch Nat &

    Appl Sci Xian 710072 Peoples R China;

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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