...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >Study on the competitive adsorption and correlational mechanism for heavy metal ions using the carboxylated magnetic iron oxide nanoparticles (MNPs-COOH) as efficient adsorbents
【24h】

Study on the competitive adsorption and correlational mechanism for heavy metal ions using the carboxylated magnetic iron oxide nanoparticles (MNPs-COOH) as efficient adsorbents

机译：羧化磁性氧化铁纳米粒子（MNPs-COOH）作为有效吸附剂对重金属离子竞争吸附及相关机理的研究

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, carboxylated magnetic iron oxide nanoparticles (MNPs-COOH) with well-formed nanostructure and magnetic recoverability were prepared successfully via a simple grafting method, and their adsorption competitiveness and differences for different heavy metal ions were generally explored both in single and mixed systems. The results showed that the Cd2+ adsorption demonstrated the strongest resistivity to the effects from exogenous factors with the tightest binding with the carboxyl groups on the MNPs-COOH surface. Besides, the competitive adsorption and multicomponent desorption experiments reflected that the affinity and adsorption priority of the as-synthesized MNPs-COOH for different heavy metal ions were hierarchical and followed the rank of Cd2+ Cu2+ Pb2+ Ni2+, resulting from the disparity of the proportion and intensity of the inner-sphere complexation between heavy metals and the MNPs-COOH. It is hoped that our work could offer effective guidance for the MNPs-COOH application in the wastewater treatments involving various heavy metal contaminants in the future.
机译：本研究通过简单的接枝​​方法成功制备了结构良好，磁性可恢复性良好的羧化磁性氧化铁纳米颗粒（MNPs-COOH），并探讨了它们在单一和混合状态下对不同重金属离子的吸附能力和差异。系统。结果表明，Cd2 +吸附表现出对外源因素影响的最强抵抗力，与MNPs-COOH表面的羧基结合最紧密。此外，竞争性吸附和多组分解吸实验表明，合成的MNPs-COOH对不同重金属离子的亲和力和吸附优先级是分级的，并且遵循Cd2 +> Cu2 +> Pb2 +> Ni2 +的等级。重金属与MNPs-COOH之间的内球络合的比例和强度希望我们的工作将来能够为MNPs-COOH在涉及各种重金属污染物的废水处理中的应用提供有效的指导。

著录项

  • 来源
    《Applied Surface Science》 |2019年第15期|960-966|共7页
  • 作者

    Xu Hao; Yuan Hengfeng; Yu Jianguo; Lin Sen;

  • 作者单位

    East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;

    Fudan Univ, Dept Orthoped, Zhongshan Hosp, Shanghai 200032, Peoples R China;

    East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China|East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;

    East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China|East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China|Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Magnetic nanoparticle; Carboxylation; Competitive adsorption; Desorption; Adsorption mechanism; Inner-sphere complexation;

    机译：磁性纳米粒子;羧基化;竞争性吸附;脱附;吸附机理;内球络合;

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