کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5424250 | 1507958 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Autocatalysis by the intermediate surface hydroxide formed during hydrogen peroxide reduction on silver electrodes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Recent electrochemical studies of the cathodic reduction of hydrogen peroxide (H2O2) on silver electrodes in acidic electrolyte (HClO4) revealed a novel autocatalytic reaction path. Adsorbed hydroxyl groups, OHad, were proposed to act as the catalyst. To gather further clarity about this mechanism, in particular about the presence and nature of the postulated adsorbate OHad, in the present work surface science experiments on Ag(1Â 1Â 1) electrodes are evaluated. It is concluded that the species OHad is identical with the surface AgOH formed in alkaline solution as a relatively stable intermediate in the anodic oxidation of OHâ to surface-Ag2O.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 603, Issues 10â12, 1 June 2009, Pages 1900-1903
Journal: Surface Science - Volume 603, Issues 10â12, 1 June 2009, Pages 1900-1903
نویسندگان
K. Doblhofer, G. Flätgen, S. Horswell, B. Pettinger, S. Wasle, K.G. Weil,