کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7869902 | 1509175 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fine tuning of magnetite nanoparticle size distribution using dissymmetric potential pulses in the presence of biocompatible surfactants and the electrochemical characterization of the nanoparticles
ترجمه فارسی عنوان
تنظیم دقیق توزیع اندازه نانوذرات مگنتیت با استفاده از پالس های بالقوه انکسار در حضور پودر واکنش های بیولوژیکی و بررسی ویژگی های الکتروشیمیایی نانوذرات
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کلمات کلیدی
سنتز الکتروشیمیایی، پالس های نامتقارن، نانوذرات مگنتیت، سورفکتانت های بیو سازگار،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
چکیده انگلیسی
The effects of varying the surfactant concentration and the anodic pulse potential on the properties and electrochemical behaviors of magnetite nanoparticles were investigated. The nanoparticles were synthesized with an electrochemical method based on applying dissymmetric potential pulses, which offers the advantage that can be used to tune the particle size distribution very precisely in the range of 10 to 50Â nm. Under the conditions studied, the surfactant concentration directly affects the size distribution, with higher concentrations producing narrower distributions. Linear voltammetry was used to characterize the electrochemical behavior of the synthesized nanoparticles in both the anodic and cathodic regions, which are attributed to the oxidation of Fe2Â + and the reduction of Fe3Â +; these species are part of the spinel structure of magnetite. Electrochemical impedance spectroscopy data indicated that the reduction and oxidation reactions of the nanoparticles are not controlled by the mass transport step, but by the charge transfer step. The sample with the highest saturation magnetization was that synthesized in the presence of polyethylene glycol.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 46, 1 January 2015, Pages 538-547
Journal: Materials Science and Engineering: C - Volume 46, 1 January 2015, Pages 538-547
نویسندگان
A. RodrÃguez-López, J.J. Cruz-Rivera, C.G. ElÃas-Alfaro, I. Betancourt, H. Ruiz-Silva, R. Antaño-López,