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以磁性碳纳米球为载体的锂离子印迹吸附剂用于锂离子的选择性回收

梁琦 张二辉 闫光 杨永珍 刘伟峰 刘旭光

梁琦, 张二辉, 闫光, 杨永珍, 刘伟峰, 刘旭光. 以磁性碳纳米球为载体的锂离子印迹吸附剂用于锂离子的选择性回收[J]. 新型炭材料, 2020, 35(6): 696-706. doi: 10.1016/S1872-5805(20)60533-9
引用本文: 梁琦, 张二辉, 闫光, 杨永珍, 刘伟峰, 刘旭光. 以磁性碳纳米球为载体的锂离子印迹吸附剂用于锂离子的选择性回收[J]. 新型炭材料, 2020, 35(6): 696-706. doi: 10.1016/S1872-5805(20)60533-9
LIANG Qi, ZHANG Er-hui, YAN Guang, YANG Yong-zhen, LIU Wei-feng, LIU Xu-guang. A lithium ion-imprinted adsorbent using magnetic carbon nanospheres as a support for the selective recovery of lithium ions[J]. NEW CARBON MATERIALS, 2020, 35(6): 696-706. doi: 10.1016/S1872-5805(20)60533-9
Citation: LIANG Qi, ZHANG Er-hui, YAN Guang, YANG Yong-zhen, LIU Wei-feng, LIU Xu-guang. A lithium ion-imprinted adsorbent using magnetic carbon nanospheres as a support for the selective recovery of lithium ions[J]. NEW CARBON MATERIALS, 2020, 35(6): 696-706. doi: 10.1016/S1872-5805(20)60533-9

以磁性碳纳米球为载体的锂离子印迹吸附剂用于锂离子的选择性回收

doi: 10.1016/S1872-5805(20)60533-9
基金项目: 科技部国家重点研发计划(2017YFB0603104);国家自然科学基金(U1607120,U1610255,51603142);山西省重点研发计划国际合作项目(201903D421077).
详细信息
    作者简介:

    梁琦,硕士研究生.E-mail:2498435356@qq.com

    通讯作者:

    杨永珍,博士,教授.E-mail:yyztyut@126.com;刘伟峰,博士,副教授.E-mail:lwf061586@yeah.net

  • 中图分类号: TB33

A lithium ion-imprinted adsorbent using magnetic carbon nanospheres as a support for the selective recovery of lithium ions

Funds: National Key Research and Development Program of China (2017YFB0603104), National Natural Science Foundation of China (U1607120, U1610255, 51603142), Key R&D Program of Shanxi Province (International Cooperation, 201903D421077).
  • 摘要: 以磁性碳纳米球(Fe3O4@C)为载体,2-羟甲基-12-冠醚-4为吸附单元,采用表面离子印迹技术设计并制备了对Li+具有选择性吸附的磁性碳基锂离子印迹材料(Li+-IIP-Fe3O4@C)。首先,采用γ-甲基丙烯酰氧基丙基三甲氧基硅烷对Fe3O4@C进行改性,得到硅烷化Si-Fe3O4@C。接着用甲基丙烯酸(MAA)对Si-Fe3O4@C进行功能化,得到形貌规整且具有较高MAA接枝度的PMAA-Fe3O4@C。然后,借助催化剂对甲苯磺酸将2-羟甲基-12-冠醚-4接枝到PMAA-Fe3O4@C的表面,进一步在二甲基丙烯酸乙二醇酯的交联聚合下得到Li+-IIP-Fe3O4@C。动力学吸附和等温吸附结果表明,Li+的吸附符合准二级动力学模型和Langmuir等温模型。Li+-IIP-Fe3O4@C在25℃下对Li+的最大吸附容量达到22.26 mg g-1。Li+相对于Na+,K+和Mg2+的选择因子分别为8.06、5.72和2.75。经6次吸附-解吸循环,Li+-IIP-Fe3O4@C的吸附容量仅降低了8.8%,表现出优异的再生性能。
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出版历程
  • 收稿日期:  2020-03-05
  • 修回日期:  2020-04-20
  • 刊出日期:  2020-12-31

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