کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
595743 | 1454024 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Negatively charged micelles directed synthesis of snow-ball flower like superparamagnetic Ni nanoparticles and investigation of their properties
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
Snow-ball flower like Ni nanoparticles have been synthesized using negatively charged micelles. Negatively charged micelles incorporate the Ni+2 onto its head group by electrostatic attraction and again a surfactant layer is arranged on positively charged Ni and thus in a repetitive way layer-by-layer a snow-ball flower like structure is formed. After reduction of Ni+2 to Ni atom by sodium borohydride and hydrated hydrazine the Ni clusters (∼3 nm) are formed and confined in micelles in snow-ball flower like pattern. The sizes of these nanoflowers are of ∼30 nm order. The particles are superparamagnetic in nature with blocking temperature about 117 K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 348, Issues 1–3, 20 September 2009, Pages 35–38
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 348, Issues 1–3, 20 September 2009, Pages 35–38
نویسندگان
Madhuri Mandal, Debabrata Pal, Kalyan Mandal,