عنوان المقالة:تصنيع قطب اوكسيد الزنك النانوي لتقدير عنصر الزنك من خلال الفولتائية الدورانية Zinc Metal at a New ZnO Nanoparticles Modified Carbon Paste Electrode: A Cyclic Voltammetric Study.
ا.م.د عماد سلام عبود | Dr. Emad Salaam Abood | 6820
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 ZnO nanoparticles was prepared and used to study the electro oxidation of zinc ions in solution by cyclic voltammetry (CV) method. The modified electrode displayed strong resolving function for the overlapping voltammetric response of zinc into one well- defined peak. The potential difference between Epa and Epc was > 200 mV, the range of which referred to the quasi-reversible mechanism. The kinetic of electrode was studied in the range of temperature 15-30 °C. The data of voltamograms showed the negative shift increased with increase of temperature, the result of which referred to the diffusion electron transfer in redox process of zinc oxidation. Diffusion coffining was calculated from Sevcik-Randles equation and thus equaled -7 -8-8 to 1.01×10 . The rate constant was equal to 5.2×10 and 3.3×10 for oxidation and redaction respectively. And the peak current of zinc increased linearly with its concentration in the range of 2.0- 20.0 ppm.
تاريخ النشر
23/05/2018
الناشر
Nano biomedicin and engenering
رقم المجلد
رقم العدد
رابط DOI
10.5101/nbe.v10i2.p149-155.
الصفحات
6
رابط الملف
تحميل (116 مرات التحميل)
رابط خارجي
http://www.nanobe.org/Data/View/62
الكلمات المفتاحية
Cyclic voltammetry; Electrode; ZnO nanoparticales; Hydrothermal method
رجوع