Ultrafine FePd Nanoalloys Decorated Multiwalled Cabon Nanotubes toward Enhanced Ethanol Oxidation Reaction

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• 作者：Yiran Wang ; Qingliang He ; Jiang Guo ; Jinmin Wang ; Zhiping Luo ; Tong D. Shen ; Keqiang Ding ; Airat Khasanov ; Suying Wei ; Zhanhu Guo
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：November 4, 2015
• 年：2015
• 卷：7
• 期：43
• 页码：23920-23931
• 全文大小：790K
• ISSN：1944-8252

文摘

Ultrafine iron-palladium (FePd) nanoalloys deposited on 纬-Fe₂O₃, FePd鈥揊e₂O₃, further anchored on carboxyl multiwalled carbon nanotubes (MWNTs鈥揅OOH), FePd鈥揊e₂O₃/MWNTs, were successfully synthesized by a facile one-pot solution based method as thermally decomposing palladium acetylacetonate (Pd(acac)₂) and iron pentacarbonyl (Fe(CO)₅) in a refluxing dimethylformamide solution in the presence of MWNTs鈥揅OOH. A 3.65 fold increase of peak current density was observed in cyclic voltammetry (CV) for ethanol oxidation reaction (EOR) compared with that of Pd/MWNTs after normalizing to Pd mass. The greatly enhanced tolerance stability toward poisoning species and largely reduced charge transfer resistance were also obtained in chronoamperometry and electrochemical impedance spectroscopy due to the downward shifted d-band center of FePd alloy, easily formed oxygen containing species on Fe₂O₃, and the stabilizing role of the MWNTs.