عنوان المقالة:تصنيع قطب اوكسيد النحاس النانوي لتقدير عنصر النحاس من خلال الفولتائية الدورانية Copper Metal at New CuO Nanoparticles Modified Carbonpaste Electrode: Selective Voltammetric Determination
ا.م.د عماد سلام عبود | Dr. Emad Salaam Abood | 6828
نوع النشر
مجلة علمية
المؤلفون بالعربي
عماد سلام عبود، عامر موسى جودة، مثنى صالح مشكور
المؤلفون بالإنجليزي
Emad salaam Abood, Amer Musa Jouda, Muthana Salih Mashkoor
الملخص الانجليزي
A new carbon paste electrode modified with CuO nanoparticles was prepared, and used to study the electro oxidation of copper ions in solution by cyclic voltammetry (CV) method. The modified electrode displayed strong resolving function for the overlapping voltammetric response of copper into one well-defined peak. The potential difference between Epa and Epc was > 200 mV; this range referred to the quise-reversible mechanism. The kinetic of electrode was studied at the temperature range from 15 ~ 35 °C; the data of voltamograms showed the increase of temperature caused increase of negative shift, which suggested the diffusion electron transfer in the redox process of copper oxidation. Diffusion coefficient was calculated from the Randles-Sevcik equation and was equal to 71.8 × 10-4; the rate constant K was equal to 8.8 × 10-7; the peak current of copper increased linearly with its concentration at the range of 0.2 ~ 2.0 ppm.
تاريخ النشر
20/07/2018
الناشر
Nano biomedicin and engenering
رقم المجلد
رقم العدد
رابط DOI
10.5101/nbe.v10i3.p243-249.
الصفحات
٦
رابط الملف
تحميل (117 مرات التحميل)
رابط خارجي
http://www.nanobe.org/Data/View/62
الكلمات المفتاحية
Cyclic voltammetry; Nanoparticles; Electrodes
رجوع