کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7691653 | 1496015 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low cost chemical oxygen demand sensor based on electrodeposited nano-copper film
ترجمه فارسی عنوان
سنسور نیاز به اکسیژن شیمیایی کم هزینه بر اساس فیلم الکترودهایی نانو مسی
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
چکیده انگلیسی
A commercially available copper electrical cable and pure Cu disk were used as substrates for the electrodeposition of copper nanoparticles (nano-Cu). The surface morphology of the prepared nano-Cu/Cu electrodes was investigated by scanning electron microscope (SEM) and energy dispersive X-ray spectrometer (EDX). The bare copper substrates and the nano-copper modified electrodes were utilized and optimized for electrochemical assay of chemical oxygen demand (COD) using glycine as a standard. A comparison was made among the four electrodes (i.e., bare and nano-Cu coated copper cable and pure copper disk) as potential COD sensors. The oxidation behavior of glycine was investigated on the surface of the prepared sensors using linear sweep voltammetry (LSV). The results indicate significant enhancement of the electrochemical oxidation of glycine by the deposited nano-Cu. The effects of different deposition parameters, such as Cu2+ concentration, deposition potential, deposition time, pH, and scan rate on the response of the prepared sensors were investigated. Under optimized conditions, the optimal nano-Cu based COD sensor exhibited a linear range of 2-595Â mg/L, lower limit of detection (LOD) as low as 1.07Â mg/L (S/NÂ =Â 3). The developed method exhibited high tolerance level to Clâ ion where 1.0Â M Clâ exhibited minimal influence. The sensor was utilized for the detection of COD in different real water samples. The results obtained were validated using the standard dichromate method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Arabian Journal of Chemistry - Volume 11, Issue 2, February 2018, Pages 171-180
Journal: Arabian Journal of Chemistry - Volume 11, Issue 2, February 2018, Pages 171-180
نویسندگان
Hamdy H. Hassan, Ibrahim H.A. Badr, Hesham T.M. Abdel-Fatah, Esmat M.S. Elfeky, Ali M. Abdel-Aziz,