Rational syntheses of core–shell Fe@(PtRu) nanoparticle electrocatalysts for the methanol oxidation reaction with complete suppression of CO-poisoning and highly enhanced activity
作者： Md. Abdul Matin , Eunjik Lee , Hyunchul Kim , Won-Sub Yoon , Young-Uk Kwon
DOI: 10.1039/C5TA03809J
关键词: X-ray photoelectron spectroscopy 、 Chronoamperometry 、 Nuclear chemistry 、 Analytical chemistry 、 Ternary operation 、 Transmission electron microscopy 、 Spectroscopy 、 Ethylene glycol 、 Chemistry 、 Nanoparticle 、 Adsorption
摘要: We report the syntheses of ternary nanoparticles (NPs) Fex@(PtRu)(1−x)/2 (x = 0.0, 0.30, 0.34, 0.38, and 0.44) with Fe cores PtRu alloy shells, which exhibit greatly improved electrocatalytic properties for methanol oxidation reaction (MOR). The were achieved by one-step sonochemical treatments Pt(acac)2, Ru(acac)3, Fe(acac)3 in ethylene glycol. NPs are characterized X-ray diffractometry, transmission electron microscopy (TEM), inductively coupled plasma-adsorption emission spectroscopy particle size, morphology, composition, respectively. formation core–shell has been proven scanning TEM-energy dispersive spectroscopy, electronic structures elements have investigated photoelectron adsorption near edge spectroscopy. show enhanced MOR activity compared to a commercial PtRu-alloy (PtRu) factor up 2.5 based on forward current density data. More importantly, complete suppression CO-poisoning. Chronoamperometry data stability over Pt/C references.
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