高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (5): 1013-1018.doi: 10.7503/cjcu20180708

• 物理化学 • 上一篇    下一篇

石墨烯-富勒烯铵碘盐复合载体负载Pd催化剂的制备及电催化氧化乙醇性能

林周晨, 黄巧茜, 雷鸣()   

  1. 浙江大学化学系, 杭州 310027
  • 收稿日期:2018-10-19 出版日期:2019-05-06 发布日期:2019-04-26
  • 作者简介:

    联系人简介: 雷 鸣, 男, 博士, 副教授, 主要从事有机光电材料研究. E-mail: leiming@zju.edu.cn

  • 基金资助:
    国家自然科学基金(批准号: 21442005, 21642008)资助.

Fabrication and Electrocatalytic Performance of Graphene-fullerene Ammonium Iodide Composite Supported Pd Nanocatalyst for Ethanol Oxidation

LIN Zhouchen, HUANG Qiaoxi, LEI Ming*()   

  1. Department of Chemistry, Zhejiang University, Hangzhou 310027, China
  • Received:2018-10-19 Online:2019-05-06 Published:2019-04-26
  • Contact: LEI Ming E-mail:leiming@zju.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21442005, 21642008).

摘要:

采用水合肼水热还原法制备了不同比例还原氧化石墨烯(RGO)与n型自掺杂富勒烯铵碘盐(PCBANI)的复合载体RGO-PCBANI, 并在电极上用这些载体负载Pd纳米粒子制备了Pd/RGO-PCBANI电催化剂. 利用扫描电子显微镜(SEM)、 透射电子显微镜(TEM)、 X射线衍射(XRD)及X射线光电子能谱(XPS)对RGO-PCBANI和Pd/RGO-PCBANI的形貌及结构进行了表征. 利用循环伏安和计时电流等电化学方法研究了该催化剂电催化氧化乙醇的性能. 结果表明, 所制备的RGO-PCBANI(6∶1)载体的分散性较好, 用其负载的Pd纳米粒子平均粒径为5.2 nm, 且Pd/RGO-PCBANI(6∶1)催化剂的催化活性最好, 质量电流密度达到1288.8 mA/mg.

关键词: 石墨烯-富勒烯复合载体, 间隔材料, 钯电催化剂, 燃料电池, 乙醇氧化

Abstract:

Reduced graphene oxide/[6,6]-phenyl-C61-butyric acid trimethylaminoethyl ester iodide hybrid composites(RGO-PCBANI) were used to support Pd nanoparticle to fabricate Pd/RGO-PCBANI electrocatalysts on electrode. The morphology and structure of the RGO-PCBANI and Pd/RGO-PCBANI were characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). Furthermore, the electrocatalytic performance of Pd/RGO-PCBANI towards ethanol oxidation was evaluated by using electrochemical methods such as cyclic voltammetry and chronoamperometry. The results showed that the prepared RGO-PCBANI(6∶1) support displayed good dispersibility and could immobilize Pd nanoparticle with 5.2 nm average size. Moreover, the fabricated Pd/RGO-PCBANI(6∶1) catalyst exhibited best catalyst activity and stability. The mass current density reached 1288. 8 mA/mg. The good catalytic performance is attributed to highly conductive PCBANI’s spacer function in the RGO-PCBANI composite support.

Key words: Graphene-fullerene hybrid composite, Spacer material, Palladium electrocatalyst, Fuel cell, Ethanol oxidation

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