Multi-walled carbon nanotubes supported palladium nanoparticles: Synthesis, characterization and catalytic activity towards methanol electro oxidation in alkaline media

  • سال انتشار: 1394
  • محل انتشار: فصلنامه هیدروژن و پیل سوختی ایران، دوره: 2، شماره: 2
  • کد COI اختصاصی: JR_IJHFC-2-2_001
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 409
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نویسندگان

Roya Kiyani

School of Chemical Engineering, Iran University of Science and Technology.

Soosan Rowshanzamir

School of Chemical Engineering, Iran University of Science and Technology. Fuel Cell Laboratory, Green Research Center, Iran University of Science and Technology.

Mohammad Javad Parnian

School of Chemical Engineering, Iran University of Science and Technology. Fuel Cell Laboratory, Green Research Center, Iran University of Science and Technology.

چکیده

Palladium nanoparticles supported on multi-walled carbon nanotubes (Pd/MWCNTs) have been synthesized using a modified polyol reduction method and its performance in methanol oxidation reactions has been evaluated. The morphology of palladium on MWCNTs was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The catalytic performance of thesynthesized catalyst was examined for methanol oxidation in a N2- saturated solution of 1 M KOH and 1 M CH3OH. Cyclic voltammetry (CV) analysis demonstrated that the Pd/MWCNTs catalyst exhibits lower catalytic activity compared to the commercial Pt/C, but because of its relatively low-cost, the prepared Pd/MWCNTs might be an economically viable alternative for methanol oxidation. The chronoamperometry technique is an effective method to evaluate the electrocatalytic activity and stability of the alcohol oxidation reaction. The chronoamperometry results showed that Pd supported on MWCNTs has better long-term stability in comparison to Pt/C which is related to the good dispersion of Pd nanoparticles on the surface of support.

کلیدواژه ها

Palladium nanoparticles,Multi-walled carbon nanotubes,Methanol oxidation

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