Graphene oxide functionalized magnetic nanoparticles as adsorbents for removal of phthalate esters

被引：4
作者：
Lili Yin
Yuexin Lin
Li Jia
机构：
[1] South China Normal University,MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics
来源：
Microchimica Acta | 2014年 / 181卷
关键词：
Graphene oxide; Magnetic nanoparticles; Removal; Phthalate esters;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We show that magnetic nanoparticles can be functionalized with graphene oxide (GO-MNPs) in two reaction steps, and that such nanoparticles can be used as adsorbents for the removal of phthalate esters (PAEs) from water samples. The GO-MNPs were characterized by scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, zeta potential, and vibrating sample magnetometer. The impacts of contact time, sample pH, ionic strength and sample volume on the adsorption process were investigated. The maximum adsorption capacity for diethyl phthalate was calculated to be 8.71 mg g−1 according to the Langmuir adsorption isotherm. The adsorption efficiency was tested by removal of PAEs. More than 99 % of the total quantity of PAEs (0.12 mg L−1) in 500 mL real water samples can be removed when GO-MNPs (275–330 mg) were used as an adsorbent. In addition, other species (estriol and fluorene) containing benzene rings were also almost completely removed with the PAEs using GO-MNPs, indicating that GO-MNPs are suitable for the removal of the species containing π-electron system through π-π interactions.
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页码：957 / 965
页数：8
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