1403/01/09

رضا اوجانی

مرتبه علمی: استاد
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده شیمی
نشانی:
تلفن: 011 35302350

مشخصات پژوهش

عنوان
Fabrication of a bimetallic Cu/Pt particle-modified carbon nanotube paste electrode and its use for the electrocatalytic oxidation of methanol
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Carbon nanotube paste electrode; Electrodeposition; Methanol; Bimetallic Cu/Pt particles; Galvanic replacement
سال
2013
مجله INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
شناسه DOI
پژوهشگران Jahan Bakhsh Raoof ، Reza Ojani ، Sayed Reza Hosseini-zavvarmahalleh ، Sepideh Aghajani

چکیده

In this work, carbon nanotube paste electrode (CNTPE) was used as a substrate for deposition of bimetallic Cu/Pt particles. At first, a Cu film was prepared by electrochemical reduction of Cu ions onto the CNTPE in 0.1 M H2SO4 solution. Cu/Pt catalysts were prepared by partial galvanic replacement of Cu with Pt by simply immersion of the Cu-coated CNTPE in 2.0 mM H2PtCl6 solution. The nature and surface morphology of the bare CNTPE and fabricated Cu/Pt species were characterized by scanning electron microscopy and energy dispersive X-ray spectrometry. The Cu/Pt-modified CNTPE exhibits remarkable electrocatalytic activity towards methanol oxidation. It has been shown that carbon nanotubes improve the electrocatalytic activity of the catalysts towards oxidation. Then, the influence of various parameters such as Cu source concentration, electrodeposition time, replacement time, and methanol concentration on its oxidation as well as long-term stability of the modified electrode have been investigated by electrochemical methods.