کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7784862 | 1500578 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ preparation of film and hydrogel bio-nanocomposites of chitosan/fluorescein-copper with catalytic activity
ترجمه فارسی عنوان
آماده سازی در محل نانوکامپوزیت های زیستی فیلم و هیدروژل کیتوزان / فلورسین مس با فعالیت کاتالیزوری
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کلمات کلیدی
کیتوزان، بیونان کامپوزیت، نانوذرات مس، کاتالیزوری،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
Copper nanoparticles were introduced into chitosan/fluorescein (Ch/f) film and hydrogel matrices by immersion of the respective matrix into an aqueous solution containing the precursor metallic salt and further reduction in aqueous medium at 75 °C for 3 h under nitrogen (N2) atmosphere. TGA was used to estimate the metallic content of Ch/f-Cu film and hydrogel nanocomposites. The prepared nanocomposites were proven to be effective as catalytic materials in the reduction of methylene blue (MB) employing N2H4 as reducing agent. In addition, rate constants of the reduction reaction using Ch/f-Cu film and hydrogel nanocomposites as catalysts were determined. The experimental results showed that the catalytic activity and order of reaction of the MB-N2H4 reduction system depended strongly on the type of nanocomposite used. Finally, the recyclability of the film and hydrogel nanocomposites as catalytic materials was also studied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 180, 15 January 2018, Pages 200-208
Journal: Carbohydrate Polymers - Volume 180, 15 January 2018, Pages 200-208
نویسندگان
César SaldÃas, David DÃaz DÃaz, Sebastián Bonardd, Cristián Soto-Marfull, Alexander Cordoba, Soledad SaldÃas, Caterina Quezada, Deodato Radic, Ángel Leiva,