کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1283220 1497635 2009 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrocatalytic oxidation of methanol on mono and bimetallic composite films: Pt and Pt–M (M = Ru, Ir and Sn) nano-particles in poly(o-aminophenol)
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Electrocatalytic oxidation of methanol on mono and bimetallic composite films: Pt and Pt–M (M = Ru, Ir and Sn) nano-particles in poly(o-aminophenol)
چکیده انگلیسی

Mono and bimetallic composite catalysts have been formed by a three-step process, whereby the surface of aluminum electrode was pretreated upon immersion into a Pd(NH3)4Cl2 solution (p-Al), was subsequently coated with a thin poly(o-aminophenol) (PoAP) layer by potentiodynamic electropolymerization of o-aminophenol and Pt and Pt alloys nano-particles were finally dispersed into the PoAP film by electrochemical methods. The electrocatalytic properties of the platinum doped (Pt/PoAP/p-Al) and Pt alloys doped (Pt–M/PoAP/p-Al, M = Ru, Ir and Sn) electrodes towards the methanol oxidation were investigated by cyclic voltammetry and compared with the electrocatalytic properties of pristine Pt and Pt particles on pretreated Al (Pt/p-Al) electrodes. The enhancement of the electrocatalytic activity of the Pt nano-particles, when Ru, Ir and Sn, are co-deposited in the polymer is also studied in detail. The effects of various parameters on the electrooxidation of methanol as well as the long-term stability of doped electrodes have also been investigated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 34, Issue 7, April 2009, Pages 2880–2892
نویسندگان
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