کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8331985 1540247 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In situ generation of silver nanoparticles within crosslinked 3D guar gum networks for catalytic reduction
ترجمه فارسی عنوان
تولید انبوه نانوذرات نقره در شبکه های روتختی سه گانه آدامس برای کاهش کاتالیزوری
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
چکیده انگلیسی
The direct use of guar gum (GG) as a green reducing agent for the facile production of highly stable silver nanoparticles (Ag NPs) within this biopolymer and subsequent crosslinking with borax to form crosslinked Ag@GG beads with a 3D-structured network are presented here. These crosslinked Ag@GG beads were characterized using UV-vis absorption spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and Fourier transform infrared (FTIR) spectroscopy, and then tested as a solid-phase heterogenerous catalyst for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of excess borohydride. The results indicate that these crosslinked Ag@GG beads show excellent catalytic performance for the reduction of 4-NP within 20 min and can be readily used for 10 successive cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 73, February 2015, Pages 39-44
نویسندگان
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