کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
219809 463297 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spectroelectrochemical investigation of MnO2 electro-generation and electro-reduction in acidic media
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Spectroelectrochemical investigation of MnO2 electro-generation and electro-reduction in acidic media
چکیده انگلیسی

Spectroscopic investigations of Mn2+ electro-oxidation and MnO2 electro-reduction in acidic media (0.5–2 M H2SO4) have been performed using optically transparent electrodes (OTE). Reticulated vitreous carbon (RVC) has been used as the electrode material. Our results show that in the first step of Mn2+ ions electro-oxidation the unstable in aqueous media Mn3+ ions are formed. In the next step Mn3+ ions can hydrolyse to MnOOH and/or disproportionate to Mn2+ and Mn4+ ions. Contrary to the electro-oxidation of Mn2+ to MnO2, the electro-reduction of MnO2 proceeds in two steps. The first step is strictly connected with electro-generation of MnOOH and the next with regeneration of Mn2+ ions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 651, Issue 2, 1 February 2011, Pages 237–242
نویسندگان
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