کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
192165 | 459736 | 2009 | 7 صفحه PDF | دانلود رایگان |

A new process to prepare well-dispersed PtRu nanoparticles on 2-aminophenoxazin-3-one (APZ)-functionalized multiwalled carbon nanotubes (PtRu/APZ-MWCNTs) was reported. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectrometry (FT-IR), UV–vis absorption spectra as well as Raman spectra were used for the catalyst characterization. The Raman spectroscopic results reveal that APZ-functionalized MWCNTs has good integrity and electronic structure than MWCNTs treated with chemical acid. The composite catalyst shows excellent electrocatalytic activity toward methanol oxidation and appears as a promising candidate for use in direct methanol fuel cells. Cyclic voltammetry and chronoamperometry studies indicate that the PtRu/APZ-MWCNTs catalysts exhibited higher electrochemical active surface area, electrocatalytic activity and stability for the electro-oxidation of methanol as compared to that of PtRu electrocatalysts supported on conventional acid-treated MWCNTs and carbon black.
Journal: Electrochimica Acta - Volume 54, Issue 27, 30 November 2009, Pages 7114–7120