کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6586267 | 456382 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
One-pot hydrothermal synthesis of highly monodisperse water-dispersible hollow magnetic microspheres and construction of photonic crystals
ترجمه فارسی عنوان
سنتز هیدروترمال یک گلدان از میکروسپارک های مغناطیسی توخالی بسیار پراکنده آب و پراکنده و ساخت بلورهای فوتونی
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کلمات کلیدی
اندازه یکنواخت، ساختار توخالی، گاز حباب کمک، بلورهای فوتونی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Water-dispersible monodisperse hollow Fe3O4 microspheres were prepared via a one-pot hydrothermal process based on FeCl3·6H2O, sodium citrate, urea and sodium polyacrylate (PAAS). Different alkali sources and FeCl3·6H2O amounts were added to investigate the formation mechanism, and a gas-bubble-assisted Ostwald ripening process was possibly responsible for the formation of hollow structure. In the process, the particle size and morphology could be effectively controlled by the slight change of FeCl3·6H2O addition amount. Meanwhile, monodisperse solid microspheres were obtained when sodium acetate was added to offer alkaline environment. The microspheres exhibited superparamagnetic properties with high saturation magnetization value about 76.7 emu gâ1 at room temperature, and the BET surface area of the sample was 50.04 m2 gâ1. Besides, it was found that the particles could be used for constructing photonic crystals. Such monodisperse hollow Fe3O4 microspheres have a great application potential in biomedicine, MRI agents and color display areas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 259, 1 January 2015, Pages 779-786
Journal: Chemical Engineering Journal - Volume 259, 1 January 2015, Pages 779-786
نویسندگان
Yali Liu, Chunmei Li, Haotian Zhang, Xinlong Fan, Yu Liu, Qiuyu Zhang,