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Carbon‐Supported Pt Particles as a Catalyst for Electrooxidation of Methanol and Cyclic Voltammetry Studies Under Acidic Conditions
Author(s) -
Golikand Ahmad Nozad,
Maragheh Mohammad Ghannadi,
Sherehjini Sajjad Sedaghat,
TaghiGanji Karim M.,
Yari Mohammad
Publication year - 2006
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200503476
Subject(s) - electrocatalyst , cyclic voltammetry , methanol , platinum , catalysis , inorganic chemistry , electrochemistry , glassy carbon , sulfuric acid , carbon fibers , voltammetry , direct methanol fuel cell , chemistry , aqueous solution , electrode , materials science , nuclear chemistry , organic chemistry , composite material , composite number , anode
Electrooxidation of methanol on glassy carbon (GC) electrode modified by optimum carbon supported Pt electrocatalyst (Pt‐C/GC) in acid media is investigated. The catalyst is prepared by ultrasonicating Pt/C powders in aqueous media. The activity of prepared Pt‐C/GC electrode is studied in potential range of 0–1000 mV (versus SCE) by cyclic voltammetry. The results showed that the Pt/C dispersed layer at the surface of glassy carbon electrode, behaves as an electrocatalyst for the oxidation of methanol in acid medium by optimum loading of Pt (0.2 mg cm −2 ). The electrochemical properties of prepared electrode are studied under various conditions. However the effect of various parameters in the catalytic enhancement of Pt/C, such as platinum loading, sulfuric acid concentration, different scan rates, different final potentials, and medium temperature are considered and examined.