کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1619729 | 1516386 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A simple method for preparation of superparamagnetic porous silica
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
A simple method was described for the preparation of porous silica with superparamagnetic properties. The mesopores of as-prepared composite silica were dispersed with magnetic nanoparticles. The prepared samples were characterized by XRD, TEM, BET and vibrating sample magnetometry (VSM). Results showed that such magnetic composite material exhibited large surface areas (377.4Â m2/g), high pore volumes (0.65Â cm3/g) and large pore size (7.05Â nm). Furthermore, it exhibited another advantage (recyclability) because it can be magnetically separated by an external magnetic field. In the preparation, it was easily to synthesize porous silica with tunable magnetic properties by changing the ratio of the different precursors. Therefore, the composite would be a good choice for catalytic supports.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 493, Issues 1â2, 18 March 2010, Pages 410-414
Journal: Journal of Alloys and Compounds - Volume 493, Issues 1â2, 18 March 2010, Pages 410-414
نویسندگان
Chao Wang, Yanhui Ao, Peifang Wang, Jin Qian, Jun Hou, Songhe Zhang,