کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5209762 1503072 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication of copper coated polymer foam and their application for hexavalent chromium removal
ترجمه فارسی عنوان
ساخت فوم پلیمری با پوشش مس و کاربرد آنها برای حذف کروم شش ظرفیتی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
The polymer foam coated with zero-valent copper (Cu0) was designed and prepared for the removal of hexavalent chromium (Cr(VI)) in water. Firstly, porous poly(tert-butyl acrylate) was fabricated by concentrated emulsion polymerization and then acrylic acid groups were generated on the surface of foam by hydrolysis reaction. Secondly, with the help of the large amount reactive carboxylic acid groups, polyethyleneimine (PEI) were chemically grafted onto the surface by the reaction between amine group and acrylic acid group. Finally, zero-valent copper was reduced by sodium borohydride (NaBH4) and coated on the surface of polymer foam. Thus the copper functionalized porous adsorbent (Cu0-PEI-PAA) was constructed, and then applied for removing Cr(VI) from aqueous solution. The removal mechanism of Cr(VI) involved redox reaction by zero-valent copper and adsorption by amine groups, simultaneously. As a result, 99.5% of Cr(VI) could be removed within 2 h, and the maximum removal capacity for Cr(VI) of Cu0-PEI(1800)-PAA was 9.16 mg/g. Furthermore, the effect of initial concentration of Cr(VI), pH value, and temperature on the Cr(VI) removal was investigated. Therefore, the as-prepared zero-valent copper-loaded polymer foam could be an efficient and promising remediation material to remove Cr(VI) from wastewater.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 88, March 2015, Pages 24-30
نویسندگان
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