کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6662696 | 463225 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical behaviour of iodine redox couples in aprotic and protic RTILs: 1-Butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and ethylammonium nitrate
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The electrochemical behaviour of iodine has been investigated by linear sweep voltammetry and cyclic voltammetry at a glassy carbon electrode in two ionic liquids, the first one is protic: ethylammonium nitrate (EAN) and the second one is aprotic: 1-Butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr14-TFSI). The results showed that iodine yielded two reduction peaks, Pc1 and Pc2 in both ionic liquids and that reduction peaks are controlled by diffusion. The addition of an organic solvent (γ-butyrolactone or methanol) shows a dramatic effect on the electrochemical behaviour of iodine in both ILs. The Walden product values indicate that, the variations of the self-diffusion coefficient of species and ionic conductivity, versus the viscosity are inversely proportional, only in aprotic ionic liquid medium. The cyclic voltammetry iodine redox couples showed that (I2/I3-) is reversible in EAN and irreversible in Pyr14-TFSI. However, (I3-/I-) is irreversible in EAN and reversible in Pyr14-TFSI. It was also demonstrated that, (I3-) is more stable in protic ionic liquid than aprotic ones.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volumes 717â718, 15 March 2014, Pages 189-195
Journal: Journal of Electroanalytical Chemistry - Volumes 717â718, 15 March 2014, Pages 189-195
نویسندگان
Ramzi Zarrougui, Mahmoud Dhahbi, Daniel Lemordan,