توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Electrocatalytic Oxidation of Formaldehyde on PtPd Alloy Nanoparticle –Multi–Walled Carbon Nanotube–Ionic Liquid Composite Film
نویسنده(ها): ، ، ،
اطلاعات انتشار: Analytical & Bioanalytical Electrochemistry، سوم،شماره۲، Apri۲۰۱۱، سال
تعداد صفحات: ۹
PtPd alloy nanoparticles were electrodeposited on a multi–walled carbon nanotube (MWNT)–ionic liquid (IL, i.e., 1–octyl–3–methylimidazolium hexafluophosphate, OMIMPF6) composite film coated glassy carbon electrode. The resulting electrode (PtPd–MWNT– IL\GCE) was characterized by X–ray diffraction, scanning electron microscope and voltammetry. The influence of some parameters (e.g. electrodeposition time, electrodeposition potential and temperature) on the PtPd alloy nanoparticles was discussed and optimized. The electrocatalytic oxidation of formaldehyde on the electrode was explored, and it was found that the PtPd–MWNT–IL\GCE showed good electrochemical catalysis in H2SO4 solution. When the PtPd–MWNT–IL\GCE was used as a formaldehyde sensor, it displayed wide linear range and good stability.

۲Electrodeposition of AuNi Alloy Nanoparticles on Mercapto Ionic Liquid–Graphite Composite Film and the Amperometric Determination of Hydroquinone
اطلاعات انتشار: Analytical & Bioanalytical Electrochemistry، پنجم،شماره۲، Apr ۲۰۱۳، سال
تعداد صفحات: ۱۲
Mercapto–imidazolium ionic liquid (IL, i.e. 1–methyl–3(2’–mercaptoacetoxyethyl) imidazolium hexafluophosphate)–graphite composite film is prepared. AuNi nanoparticles are electrodeposited on it from aqueous electrolyte. The resulting composite film coated glassy carbon electrode (AuNi–IL–graphite\GCE) is characterized by scanning electron microscopy, energy dispersive X–ray spectroscopy, X–ray diffraction and electrochemical impedance spectroscopy. The electrochemical redox of hydroquinone on the composite film is investigated. The results show that the AuNi–IL–graphite has high catalysis and stability. In neutral solutions, it can yield sensitive and stable amperometric response to hydroquinone. At 0.05 V (vs. SCE) the response current is linear to hydroquinone concentration in the range of 0.5–40 μM, with a detection limit of 0.05 μM (S\N=3) and sensitivity of 0.92 mA cm 2 μM–1.
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