کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4907701 1426575 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Formic acid electrooxidation on thallium modified platinum single crystal electrodes
ترجمه فارسی عنوان
الکترو اکسیداسیون اسید فرمیک بر روی الکترودهای تک کریستالی پلاتین تغییر یافته تالیوم
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Formic acid electrooxidation on Tl modified Pt single crystal electrodes has been carried out in sulfuric acid media. Voltammetric experiments demonstrated that Pt(100) modified by Tl displays a significant enhancement towards formic acid oxidation both lowering the oxidation onset potential and increasing the maximum current density in the positive going-sweep. A similar behavior has been observed in Pt(s)[(100)x(111)] stepped surfaces. On the other hand, for Pt(111) surfaces, the incorporation of Tl also induced a shift of the oxidation onset to lower potential values, a diminution of the hysteresis between the positive and negative going-sweep and also an increase of the oxidation currents. These results have been corroborated using in situ FTIR experiments, where the CO adsorption band disappears completely when Pt(100) and its vicinal surfaces are modified by Tl adatom, leading to the formation of CO2 at lower overvoltages.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 800, 1 September 2017, Pages 82-88
نویسندگان
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