Journal
JOURNAL OF POROUS MATERIALS
Volume 23, Issue 3, Pages 655-661Publisher
SPRINGER
DOI: 10.1007/s10934-015-0120-9
Keywords
Magnetic aerogels; Fe3O4; SiO2; Surface modification; Ambient pressure drying
Funding
- National Natural Science Foundation of China [51278074]
- Liaoning province colleges and universities outstanding talent support program [LR2015005]
- project of Dalian Science & Technology Foundation [2015B11NC074]
- Dalian City Construction Science & Technology Project [20111228]
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In this paper, a kind of magnetic mesoporous iron oxide/silica composite aerogels with high adsorption ability is prepared by ambient pressure drying method. The results indicate that the obtained magnetic aerogels with Fe/Si (molar ratio) > 0.91 % have higher specific surface area with 310.8-411.0 m(2) g(-1) and pore volume with 0.85-1.12 cm(3) g(-1). The adsorption test indicates that the obtained magnetic aerogels showed prominent adsorption capability with the adsorption rate for Rhodamine B in aqueous solution could attain to 95.8 % within 80 min. Moreover, all the composite aerogels exhibited good magnetic properties and could be easily separated from the water after adsorption.
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