کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1527185 | 1511851 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Protection of NiO nanoparticles against leaching in acid medium by grafting of polyacrylic acid
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Grafting polyacrylic acid onto the surface of nickel oxide nanoparticles was performed in order to impart to this metal oxide protection against leaching in acid solution (sulfuric acid 0.5 M). Infrared spectroscopy showed the chemical changes implicated in the different stages of the surface treatment. Open circuit potential as a function of time showed to be an excellent technique for characterizing the leaching resistance of the modified nanoparticles. This resistance was attributed to the formation of a layer of polyacrylic acid grafted and physically deposited onto the surface of the nanoparticles, which prevented the direct contact of the acid solution with the nanoparticles avoiding, consequently, leaching.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 109, Issues 2–3, 15 June 2008, Pages 306–310
Journal: Materials Chemistry and Physics - Volume 109, Issues 2–3, 15 June 2008, Pages 306–310
نویسندگان
Alejandro López-Ortiz, Virginia H. Collins-Martínez, Claudia A. Hernández-Escobar, Sergio G. Flores-Gallardo, E. Armando Zaragoza-Contreras,