کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
63718 48249 2016 7 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Electrocatalytic hydrogen peroxide formation on mesoporous non-metal nitrogen-doped carbon catalyst
ترجمه فارسی عنوان
تشکیل الکتروکاتالیستی پراکسید هیدروژن بر روی کاتالیست کربن دوپ شده با نیتروژن غیرفلزی مزوروپور
کلمات کلیدی
تشکیل الکتروشیمیایی پراکسید هیدروژن ؛ انتخابی؛ کربن دوپ شده با نیتروژن مزوروپور ؛ سنتز سبز؛ الکتروتالیز؛ کاتالیز بدون فلز
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی

Direct electrochemical formation of hydrogen peroxide (H2O2) from pure O2 and H2 on cheap metal-free earth abundant catalysts has emerged as the highest atom-efficient and environmentally friendly reaction pathway and is therefore of great interest from an academic and industrial point of view. Very recently, novel metal-free mesoporous nitrogen-doped carbon catalysts have attracted large attention due to the unique reactivity and selectivity for the electrochemical hydrogen peroxide formation [1], [2] and [3]. In this work, we provide deeper insights into the electrocatalytic activity, selectivity and durability of novel metal-free mesoporous nitrogen-doped carbon catalyst for the peroxide formation with a particular emphasis on the influence of experimental reaction parameters such as pH value and electrode potential for three different electrolytes. We used two independent approaches for the investigation of electrochemical hydrogen peroxide formation, namely rotating ring-disk electrode (RRDE) technique and photometric UV–VIS technique. Our electrochemical and photometric results clearly revealed a considerable peroxide formation activity as well as high catalyst durability for the metal-free nitrogen-doped carbon catalyst material in both acidic as well as neutral medium at the same electrode potential under ambient temperature and pressure. In addition, the obtained electrochemical reactivity and selectivity indicate that the mechanisms for the electrochemical formation and decomposition of peroxide are strongly dependent on the pH value and electrode potential.

Nanoporous nitrogen doped carbon (NDC) can be an electrocatalyst for the selective reduction of oxygen to hydrogen peroxide. A strong dependence on the pH is observed with a very effective peroxide generation at neutral pH.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Energy Chemistry - Volume 25, Issue 2, March 2016, Pages 251–257
نویسندگان
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