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

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.

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

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.