菜花样PtPd@PVF纳米甲醇电氧化催化剂的电化学合成

M. S. Çelebi, Kübra Öztürk, Mehmet Dumangöz
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引用次数: 0

摘要

在铅笔石墨电极上制备了以聚乙烯二茂铁(PtPd@PVF)为载体的Pt和Pd纳米颗粒催化剂,以提高先前开发的Pt@PVF催化剂的催化性能。以k2ptcl4和k2pdcl4为金属前驱体,采用循环伏安法将Pt和Pd分散到导电聚合物载体上。比较了电化学还原和化学还原Pt和Pd配合物的方法。用循环伏安法对制备的催化剂体系进行了电化学表征。通过记录扫描电镜图像和能量色散x射线光谱对催化剂进行了物理表征。PtPd@PVF催化剂对甲醇电氧化的催化活性优于单金属Pt/PVF催化剂。PtPd@PVF提到,由于聚合物的二茂铁形式被氧化为二茂铁形式,因此观察到PVF和Pt@PVF涂层的阳极峰约为0.4 V与SCE。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electrochemical Synthesis of Cauliflower-Like PtPd@PVF Nanocatalyst for Electrooxidation of Methanol
catalyst consisting of Pt and Pd nanoparticles supported on poly(vinylferrocene), i.e., PtPd@PVF was electrochemically prepared on pencil graphite electrode to improve the catalytic properties of previously developed Pt@PVF catalyst. K 2 PtCl 4 and K 2 PdCl 4 were used as the metal precursors in order to disperse the Pt and Pd onto the conducting polymer support by cyclic voltammetry technique. Electrochemical and chemical reduction methods were compared for the reduction of Pt and Pd complexes. The prepared catalyst system was electrochemically characterized by cyclic voltammetry. Physical characterization of the catalyst was performed by recording scanning electron microscopy images and energy dispersive X-ray spectrum. The PtPd@PVF catalyst showed superior catalytic activity towards electrooxidation of methanol compared to the monometallic Pt/PVF catalyst. PtPd@PVF mentioning that anodic peaks around 0.4 V vs. SCE for PVF and Pt@PVF coated are observed due to the oxidation of the ferrocene form of the polymer to the ferroceni um form.
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