کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
59152 1419420 2016 12 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Electrocatalytic oxidation of hydrazine on magnetic bar carbon paste electrode modified with benzothiazole and iron oxide nanoparticles: Simultaneous determination of hydrazine and phenol
ترجمه فارسی عنوان
اکسیداسیون الکترود از هیدرازین بر روی نوار مغناطیسی الکترود خمیر کربن اصلاح شده با نانوذرات بنزوتیازول و اکسید آهن: اندازه گیری همزمان هیدرازین و فنل
کلمات کلیدی
الکترود اصلاحی؛ اکسیداسیون Electerocatalytic؛ هیدرازین؛ فنل؛ نوار مغناطیسی اصلاح شده الکترود خمیر کربن؛ نانوذرات Fe3O4
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی

A magnetic bar carbon paste electrode (MBCPE) modified with Fe3O4 magnetic nanoparticles (Fe3O4NPs) and 2-(3,4-dihydroxyphenyl) benzothiazole (DPB) for the electrochemical determination of hydrazine was developed. The DPB was firstly self-assembled on the Fe3O4NPs, and the resulting Fe3O4NPs/DPB composite was then absorbed on the designed MBCPE. The MBCPE was used to attract the magnetic nanoparticles to the electrode surface. Owing to its high conductivity and large effective surface area, the novel electrode had a very large current response for the electrocatalytic oxidation of hydrazine. The modified electrode was characterized by voltammetry, scanning electron microscopy, electrochemical impedance spectroscopy, infrared spectroscopy, and UV-visible spectroscopy. Voltammetric methods were used to study the electrochemical behaviour of hydrazine on MBCPE/Fe3O4NPs/DPB in phosphate buffer solution (pH = 7.0). The MBCPE/Fe3O4NPs/DPB, acting as an electrochemical sensor, exhibited very high electrocatalytic activity for the oxidation of hydrazine. The presence of DPB was found to reduce the oxidation potential of hydrazine and increase the catalytic current. The dependence of the electrocatalytic current on the hydrazine concentration exhibited two linear ranges, 0.1–0.4 μmol/L and 0.7–12.0 μmol/L, with a detection limit of 18.0 nmol/L. Additionally, the simultaneous determination of hydrazine and phenol was investigated using the MBCPE/Fe3O4NPs/DPB electrode. Voltammetric experiments showed a linear range of 100–470 μmol/L and a detection limit of 24.3 μmol/L for phenol, and the proposed electrode was applied to the determination of hydrazine and phenol in water samples.

Graphical AbstractTo prepare MBCPE/Fe3O4NPs/DPB sensor, a MBCPE was fabricated and then Fe3O4NPs/DPB absorbed at the electrode surface for simultaneous determination of hydrazine and phenol.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Catalysis - Volume 37, Issue 4, April 2016, Pages 549–560
نویسندگان
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