کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
594402 879449 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of highly stable silver nanoparticles by photoreduction and their size fractionation by phase transfer method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Synthesis of highly stable silver nanoparticles by photoreduction and their size fractionation by phase transfer method
چکیده انگلیسی

In this report we demonstrate a green chemical approach for the synthesis of stable silver nanoparticles in aqueous medium using tyrosine as an efficient photoreducing agent. A narrow size distribution of silver nanoparticles can be achieved by this simple photoirradiation method without using any additional stabilizing agents or surfactants. Two different irradiation sources have been explored resulting in a different particle size distribution pattern in each case. Further, we show that starting from a polydisperse tyrosine synthesized silver nanoparticles sample, it is also possible to fractionate them into different size ranges. The size fractionation was achieved by a 2 stage phase transfer method employing different organic solvents. The nanoparticles synthesized were characterized using UV–vis spectroscopy, Transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques.

Figure optionsDownload as PowerPoint slideHighlights
► Green synthesis of Ag nanoparticles with tyrosine as a photoreducing agent.
► Size control by varying the irradiation source.
► Size fractionation of polydisperse nanoparticles by 2 step phase transfer.
► Highly stable nanoparticles suitable for making dry redespersible powders.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 392, Issue 1, 5 December 2011, Pages 264–270
نویسندگان
, , , , , ,