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
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Autocatalysis by the intermediate surface hydroxide formed during hydrogen peroxide reduction on silver electrodes
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(1 1 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 OH− to surface-Ag2O.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 603, Issues 10–12, 1 June 2009, Pages 1900-1903
نویسندگان
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