Electrochemical activated PtAuCu alloy nanoparticle catalysts for formic acid, methanol and ethanol electro-oxidation
作者： Mei Wang , Yongwei He , Ruixue Li , Zizai Ma , Zhonghua Zhang
DOI: 10.1016/J.ELECTACTA.2015.07.157
关键词: X-ray photoelectron spectroscopy 、 Methanol 、 Cyclic voltammetry 、 Inorganic chemistry 、 Catalysis 、 Formic acid 、 Chemistry 、 Chronoamperometry 、 Nanoparticle 、 Electrochemistry
摘要: Abstract Through synthesizing a series of carbon supported ternary PtAuCu nanoparticle catalysts with the varied Cu content followed by subsequently electro-chemical activation treatment, highly active Pt-Au-rich have successfully been acquired in present paper. The as-synthesized and activated were characterized using X-ray diffraction (XRD), transmission electron spectroscopy (TEM), energy dispersive (EDX), photoelectron (XPS), cyclic voltammetry (CV) chronoamperometry (CA). results show that electrochemical process has strongly interrelationship compositional ratio between Pt/Au Cu. higher is precursor, lower residual buried-underneath atoms retain after activation. Among catalysts, Pt10Au10Cu80/C exhibits best catalytic performance for electro-oxidation commonly-targeted small organic molecule fuels including formic acid, methanol ethanol acid circumstance. activity enhancement mechanism based upon as well induced possible synergistic effect from elemental interactions was also discussed.
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