首页> 外文期刊>Journal of Applied Polymer Science >Efficient removal of Cu(II) using amino-functionalized superparamagnetic nanoparticles prepared via SI-ATRP
【24h】

Efficient removal of Cu(II) using amino-functionalized superparamagnetic nanoparticles prepared via SI-ATRP

机译:使用通过SI-ATRP制备的氨基官能化超顺磁性纳米颗粒有效去除Cu(II)

获取原文
获取原文并翻译 | 示例
           

摘要

An amino-functionalized nano-adsorbent (DETA-MNPs) was prepared by a process involving: (1) synthesis of superparamagnetic Fe3O4 nanoparticles; (2) introduction of amino groups after which ATRP initiator was anchored; (3) grafting of glycidyl methacrylate (GMA) via SI-ATRP; and (4) ring-opening reaction of epoxy groups with diethylenetriamine (DETA). The nano-adsorbent was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron microscope (TEM), and vibrating sample magnetometer (VSM) and applied to remove Cu(II) in batch experiments. The effects of pH, Cu(II) concentrations, solution ionic strength, and contact time were investigated. The results show that the DETA-MNPs are spherical with cubic spine structure, high saturation magnetization (41.9 emug(-1)), and an average diameter of 10 nm. The maximum Cu(II) adsorption capacity achieves 83.33 mgg(-1) at pH 5.0 by Langmuir model. The adsorption process is highly pH-dependent and reaches equilibrium within 20 min. Furthermore, the DETA-MNPs exhibit excellent dispersibility and reusability. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 132, 42859.
机译:通过以下方法制备了氨基官能化的纳米吸附剂(DETA-MNP):(1)合成超顺磁性Fe 3 O 4纳米颗粒; (2)在锚定ATRP引发剂之后引入氨基; (3)通过SI-ATRP接枝甲基丙烯酸缩水甘油酯(GMA); (4)环氧基与二亚乙基三胺(DETA)的开环反应。通过傅里叶变换红外光谱(FT-IR),X射线衍射(XRD),透射电子显微镜(TEM)和振动样品磁强计(VSM)对纳米吸附剂进行了表征,并用于批量实验中去除了铜(II)。 。研究了pH,Cu(II)浓度,溶液离子强度和接触时间的影响。结果表明,DETA-MNPs为球形,具有立方脊柱结构,高饱和磁化强度(41.9 emug(-1)),平均直径为10 nm。 Langmuir模型在pH 5.0时最大的Cu(II)吸附容量达到83.33 mgg(-1)。吸附过程高度依赖pH值,并在20分钟内达到平衡。此外,DETA-MNP具有优异的分散性和可重复使用性。 (c)2015 Wiley Periodicals,Inc. J. Appl。 Polym。科学2016,132,42859。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号