...
首页> 外文期刊>Journal of Hazardous Materials >Preparation and characterization of a novel nano-absorbent based on multi-cyanoguanidine modified magnetic chitosan and its highly effective recovery for Hg(Ⅱ) in aqueous phase
【24h】

Preparation and characterization of a novel nano-absorbent based on multi-cyanoguanidine modified magnetic chitosan and its highly effective recovery for Hg(Ⅱ) in aqueous phase

机译:基于多氰基胍修饰的磁性壳聚糖的新型纳米吸收剂的制备,表征及其在水相中对汞(Ⅱ)的高效回收

获取原文
获取原文并翻译 | 示例
           

摘要

A new kind of nano-absorbent with the entirely novel structure, nano-absorbent of multi-cyanogunidine modified magnetic chitosan (CG-MCS nano-absorbent), has been firstly synthesized by using the func-tionalized chitosan and cross-linking agent with cyanoguanidine group simultaneously. The resulting nano-absorbent was characterized by means of the Fourier transform infrared spectra (FT-IR), transmission electron microscope (TEM), X-ray diffraction (XRD), elemental analysis and vibrating sample magnetometer (VSM). The resulting nano-absorbent basen on multi-cyanoguanidine modified magnetic chitosan has been demonstrated holding highly effective recovery for mercury ions, in other words, it showed both the extraordinary adsorption capacity for Hg(Ⅱ) at high initial concentration and the strong removal ability for it at low concentration, the maximum adsorption capacity was up to 285 mgg~(-1) and the removal percentage could reach 96% at low concentration. Meanwhile, the resulting CG-MCS nano-absorbent also showed a high selectivity adsorption for Hg(Ⅱ) among coexisting heavy metals and the good regeneration performance.
机译:通过功能化壳聚糖和交联剂与氰基胍的合成,首次合成了一种结构新颖的新型纳米吸收剂,即多氰基古尼定改性的磁性壳聚糖纳米吸收剂(CG-MCS纳米吸收剂)。同时分组。通过傅立叶变换红外光谱(FT-IR),透射电子显微镜(TEM),X射线衍射(XRD),元素分析和振动样品磁力计(VSM)对所得的纳米吸收剂进行表征。事实证明,基于多氰基胍改性的磁性壳聚糖的纳米吸收剂对汞离子具有很高的回收率,换言之,它在高初始浓度下显示出对Hg(Ⅱ)的非凡吸附能力和对Hg(Ⅱ)的强去除能力。低浓度时最大吸附量可达285 mgg〜(-1),低浓度时去除率可达96%。同时,所得的CG-MCS纳米吸收剂在共存的重金属中还表现出对Hg(Ⅱ)的高选择性吸附和良好的再生性能。

著录项

  • 来源
    《Journal of Hazardous Materials》 |2013年第15期|9-15|共7页
  • 作者单位

    State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cyanoguanidine group; Magnetic chitosan; Selective adsorption; Regeneration; Mercury recovery;

    机译:氰胍基团;磁性壳聚糖选择性吸附;再生;汞回收;

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