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Investigation of a Fe-N-C catalyst for sulfur dioxide electrooxidation

机译：二氧化硫电氧化Fe-N-C催化剂的研究

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摘要

A Fe-N-C catalyst, synthesized with porous carbon BP2000, the nitrogen source imidazole and iron source FeCl3, is developed for SO2 electrooxidation through a series of thermal and pyrolytic disposing processes. The electrochemical measurements of linear sweep voltammograms (LSV) and cyclic voltammograms (CV) are applied to investigate the SO2 oxidation performance of the catalyst. The results show that the half-wave oxidation potential of Fe-N-C is 283.8 mV lower than that of BP2000 meanwhile the onset oxidation potential reduces 58 mV as well, implying there is a highly improved SO2 oxidation performance of the catalyst. The structural and physical characteristics of the Fe-N-C catalyst are examined by the methods of TEM, XPS, XRD and Raman spectroscopy. The characterization proves the formation of graphitic carbon, iron carbides, single-layer graphene and defects as well as the existence of FeN/Fe2N, pyridinic N and Fe-N components on the prepared Fe-N-C catalyst, which are supposed to have significant effects on the SO2 electrooxidation performance.
机译：用多孔碳Bp2000合成的Fe-N-C催化剂，通过一系列热和热解放置工艺开发用于SO2电氧化的SO2电氧化。施加线性扫描伏安图（LSV）和循环伏安图（CV）的电化学测量以研究催化剂的SO2氧化性能。结果表明，Fe-N-C的半波氧化电位低于BP2000的283.8mV，同时发病氧化电位也降低了58mV，暗示催化剂的高度改善的SO2氧化性能。通过TEM，XPS，XRD和拉曼光谱法检查Fe-N-C催化剂的结构和物理特性。表征证明了制备的Fe-NC催化剂上的石墨碳，铁碳化物，单层石墨烯和缺陷以及FEN / Fe2N，吡啶碱N和Fe-N组分的存在，这应该具有显着影响在SO2电氧化性能下。

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  • 来源
    《RSC Advances》 |2016年第83期|共5页
  • 作者

    Zhao Qing; Hou Ming; Jiang Shangfeng; Wang Shengli; Ai Jun; Zheng Limin; Shao Zhigang;

  • 作者单位

    Chinese Acad Sci Dalian Inst Chem Phys Fuel Cell Syst &

    Engn Grp 457 Zhongshan Rd Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Fuel Cell Syst &

    Engn Grp 457 Zhongshan Rd Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Fuel Cell Syst &

    Engn Grp 457 Zhongshan Rd Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Fuel Cell Syst &

    Engn Grp 457 Zhongshan Rd Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Fuel Cell Syst &

    Engn Grp 457 Zhongshan Rd Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Fuel Cell Syst &

    Engn Grp 457 Zhongshan Rd Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Fuel Cell Syst &

    Engn Grp 457 Zhongshan Rd Dalian 116023 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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