吴硕

个人信息Personal Information

教授

博士生导师

硕士生导师

主要任职:化学学院副院长

其他任职:辽宁省教学名师,宝钢优秀教师特等奖提名奖,中国分析测试学会青年学术委员会委员

性别:女

毕业院校:南京大学

学位:博士

所在单位:化学学院

学科:分析化学. 生物化学与分子生物学

办公地点:化工综合楼C305

电子邮箱:wushuo@dlut.edu.cn

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Designed multifunctionalized magnetic mesoporous microsphere for sequential sorption of organic and inorganic pollutants

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论文类型:期刊论文

发表时间:2012-01-01

发表刊物:MICROPOROUS AND MESOPOROUS MATERIALS

收录刊物:SCIE、EI

卷号:147

期号:1

页面范围:295-301

ISSN号:1387-1811

关键字:Multifunctional microsphere; Pollutants sequential sorption; Magnetic removal

摘要:A novel magnetic microsphere with thiol-functionalized mesoporous shell was fabricated by using a colloidal chemical method and cationic surfactants (CTAB) as structure-directing agents. As a high performance adsorbent, these microspheres were examined for environmental protection applications to adsorb and remove toxic phenolic compounds and heavy metal ions, sequentially, in aqueous solution. The prepared nanocomposite microspheres were mesoporous and magnetizable, with a diameter of 350-400 nm, a high surface area of 913.14 m(2)/g, a pore size of 2.48 nm, and a saturation magnetization of 33.9 emu/g. These multifunctional microspheres showed excellent adsorptive capability towards toxic phenolic compounds and heavy metal ions (Hg(2+), Pb(2+)). The cation micelle made of CTAB in the mesopores has great attractive power to phenolic compounds and the adsorption capacity was as high as 144.78 mg/g for 4-methyl-2,6-dinitrophenol. The thiol-functionalized magnetic mesoporous microsphere (TMMM) which had adsorbed phenolic compounds can further adsorb metal ions after removing (TAB. The adsorption capacity was 185.19 mg/g for Hg(2+) and 114.7 mg/g for Pb(2+). The TMMM can be easily removed from solution by an external magnetic field. These results suggest that this kind of nanocomposites is potentially useful materials for effectively adsorbing and removing different dangerous pollutants in aqueous solution. Crown Copyright (C) 2011 Published by Elsevier Inc. All rights reserved.