کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6453199 1418497 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research paperIn-situ construction of novel silver nanoparticle decorated polymeric spheres as highly active and stable catalysts for reduction of methylene blue dye
ترجمه فارسی عنوان
ساخت ناحیه جدید نانوذرات نقره ای تزئین شده از کریستال های پلیمری به عنوان کاتالیزورهای بسیار فعال و پایدار برای کاهش رنگ متیلن آبی
کلمات کلیدی
حوزه های پلیمری، نانوذرات نقره، فعالیت کاتالیستی، پایداری ذخیره سازی، برنامه های کاربردی برای تصفیه فاضلاب،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


- Our method is inherently a simple, mild, green, and controllable method.
- The prepared Ag/PSNM products are a novel nanocomposite.
- The prepared Ag/PSNM products possess good temperature/pH responsive properties and improved thermal properties.
- The prepared Ag/PSNM products exhibit high catalytic activities and good storage stabilities.

A facile strategy has been developed for the preparation of novel silver/poly(styrene-N-isopropylacrylamide-methacrylic acid) (Ag/PSNM) nanocomposite spheres with high catalytic activity and good storage stability. Silver (Ag) nanoparticles are successfully deposited on poly(styrene-N-isopropylacrylamide-methacrylic acid) (PSNM) spheres surfaces via in situ reduction and simultaneously protected by polyvinylpyrrolidone (PVP). The prepared Ag/PSNM nanocomposite spheres show good temperature/pH responsive property and improved thermal property. Moreover, they also exhibit high catalytic activity and good recyclability for the catalytic reduction of methylene blue (MB) to leuco methylene blue (LMB). The result of clock reaction indicate that the redox reaction generates a colorless (LMB) solution which easily reverts back to blue (MB) in air. The catalytic activity increase with the increasing of temperature and the reaction rate constant (k) follows the typical Arrhenius-type dependence on temperature. In addition, the prepared Ag/PSNM nanocomposite spheres show good storage stability and the catalytic activity remains almost unchanged after storage for 90 days at room temperature. Therefore, the prepared Ag/PSNM nanocomposite spheres can have a highly potential use in the catalytic degradation of organic dyes in wastewater treatment applications.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 549, 5 January 2018, Pages 102-111
نویسندگان
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