کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5350317 | 1503659 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Adsorption of copper ions by ion-imprinted simultaneous interpenetrating network hydrogel: Thermodynamics, morphology and mechanism
ترجمه فارسی عنوان
جذب یون های مس توسط هیدروژل هیدروژن شبکه ای که به طور همزمان نفوذ پذیر یون به دست می آید: ترمودینامیک، مورفولوژی و مکانیزم
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
Cu(II) ion-imprinted hydrogel [Cu(II)-IIH] with interpenetrating polymer network (IPN) structure was prepared and its application to adsorb Cu(II) ions from aqueous solution was studied. The Cu(II)-IIH was prepared by UV-initiated simultaneous free radical/cationic hybrid polymerization. The adsorption capacity of the Cu(II)-IIH increased with the initial pH value of the solution, but decreased as the temperature rose from 303 to 323 K. Thermodynamic parameters such as the Gibbs free energy (ÎG°), enthalpy (ÎH°) and entropy (ÎS°) for the Cu(II) ions adsorption were evaluated. It was suggested that the adsorption was a spontaneous, exothermic process with further decrease in the degree of freedom at the solid-solution interface due to the negative ÎS° value. The morphology study indicated that the copper adsorption caused significant changes to the hydrogel structure. Finally the adsorption mechanism was studied by Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). The results indicated that copper adsorption was mainly through interactions with the amide and ether groups.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 305, 30 June 2014, Pages 412-418
Journal: Applied Surface Science - Volume 305, 30 June 2014, Pages 412-418
نویسندگان
Jingjing Wang, Liang Ding, Jun Wei, Fang Liu,