کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
221376 | 463391 | 2006 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation and electrocatalytic properties of osmium oxide/hexacyanoruthenate films modified electrodes for catecholamines and sulfur oxoanions Preparation and electrocatalytic properties of osmium oxide/hexacyanoruthenate films modified electrodes for catecholamines and sulfur oxoanions](/preview/png/221376.png)
Osmium oxide/hexacyanoruthenate films have been prepared using repeated cyclic voltammetry, and their electrocatalytic properties have been investigated. The osmium oxide/hexacyanoruthenate films were deposited directly from mixed Os3+ and Ru(CN)64- ions in a pH 2 solution. Electrochemical quartz crystal microbalance (EQCM), cyclic voltammetry, and UV–visible spectroscopy were used to study the growth mechanism of the osmium oxide/hexacyanoruthenate films. The EQCM data indicated that the redox process was confined to the immobilized osmium oxide/hexacyanoruthenate film, which showed a single redox couple with a formal proton-dependent potential at 0.35 V. The electrocatalytic oxidation of dopamine, epinephrine, and norepinephrine and S2O32- and SO52- by the osmium oxide/hexacyanoruthenate films was studied. The electrocatalytic reactions of the osmium oxide/hexacyanoruthenate films were also investigated by the rotating ring-disk electrode method.
Journal: Journal of Electroanalytical Chemistry - Volume 589, Issue 1, 1 April 2006, Pages 15–23