Preparation of acid-resistant magnetic adsorbent for effective removal of p-nitrophenol

Bilayer-silane-coated Fe304 nanoparticles with inner layer of tetraethoxy silane （TEOS） and outer layer of vinyltriethoxysilane （VTEO） were generated to enhance their acid resistance. These nanoparticles were copolymerized with vinylbenzyl chloride （VBC） using suspension polymerization, and then pos...

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Bibliographic Details
Published in:Chinese chemical letters 2012-09, Vol.23 (9), p.1079-1082
Main Authors: Zhou, Qing, Li, Zhe Qin, Shuang, Chen Dong, Li, Ai Min, Wang, Meng Qiao, Zhang, Man Cheng
Format: Article
Language:English
Subjects:
Acid stability
Adsorption
Fe304
Microporous
p-硝基苯酚
Silane modified
乙烯基三乙氧基硅烷
制备
四乙氧基硅烷
磁性吸附剂
纳米粒子
耐酸性
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Summary:Bilayer-silane-coated Fe304 nanoparticles with inner layer of tetraethoxy silane （TEOS） and outer layer of vinyltriethoxysilane （VTEO） were generated to enhance their acid resistance. These nanoparticles were copolymerized with vinylbenzyl chloride （VBC） using suspension polymerization, and then post-crosslinked. The resulting hypercrosslinked magnetic resin M150 presented specific bimodal property with large specific surface area of 1109 m2/g. It exhibited more excellent adsorption capacity of p- nitrophenol compared to another two magnetic adsorbents Q150 and MIEX~. Moreover, the acid stable property of the magnetite in MI50 extended its application at low pH value.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2012.07.001