کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
191602 459725 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
[As8W48O184]40−, a new crown-shaped heteropolyanion: Electrochemistry and electrocatalytic properties towards reduction of nitrite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
[As8W48O184]40−, a new crown-shaped heteropolyanion: Electrochemistry and electrocatalytic properties towards reduction of nitrite
چکیده انگلیسی

The electrochemical behavior of the new crown-shaped heteropolyanion [As8W48O184]40− was investigated. Compared to the analogous complex [P8W48O184]40−, [As8W48O184]40− displayed a close similar behavior. As previously reported for [P8W48O184]40−, [As8W48O184]40− is found to be stable in a large range of pH, roughly from 0 to 8 and found to be slightly more soluble than [P8W48O184]40−. Comparison between the cyclic voltammetry curves of the two complexes reveals that the potentials of the redox waves of [As8W48O184]40− are slightly shifted towards the positive values. Contrary to the high dependence of [P8W48O184]40− to buffer capacity of the supporting electrolyte, interestingly, [As8W48O184]40− displays less sensitivity. The numerous possibilities for chemical applications opened up by the electrochemistry of this new complex are exemplified here by the good linear relationship between the peak potentials of the redox waves as a function of pH and, by the electrocatalytic reduction of nitrite.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 55, Issue 9, 30 March 2010, Pages 3118–3122
نویسندگان
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