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Cu doped Fe3O4 magnetic adsorbent for arsenic: synthesis, property, and sorption application

机译:Cu掺杂Fe3O4砷磁性吸附剂:合成,性能和吸附应用

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摘要

Cu doped Fe3O4 (Fe3O4: Cu) particles were synthesized and applied for arsenic adsorption. As the copper ions increase, the adsorption capacity of Fe3O4: Cu towards As(V) and As(III) increases from 7.32 to 42.90 mg g(-1) and from 8.12 to 37.97 mg g(-1), respectively. The incorporation of copper decreased the particle size, increased the surface area, porosity and zeta potential, leading to the increase of the adsorption sites and affinity toward negative As(V) species. More importantly, the doped copper ions catalyzed the efficient oxidation of As(III) to As(V) by O-2 followed by As(V) adsorption. The Fe3O4: Cu particles also exhibited good performance toward low level arsenic removal, excellent separation, and satisfactory regeneration property. The results indicate Fe3O4: Cu particles possess great potential for both As(III) and As(V) adsorption.
机译:Cu掺杂Fe3O4(Fe 3 O 4:Cu)颗粒被合成并施加用于砷吸附。 随着铜离子的增加,Fe3O4:Cu朝向(v)和(iii)的吸附容量分别从7.32〜42.90mg g(-1)和8.12-17.97mg(-1)增加。 铜的掺入降低了粒度,增加了表面积,孔隙率和ζ电位,导致吸附位点的增加和朝向负作为(v)种的亲和力。 更重要的是,掺杂的铜离子催化为(iii)的有效氧化为(iii)至o-2的(v),然后用作(v)吸附。 Fe3O4:Cu颗粒也表现出良好的低水平砷去除,优异的分离和令人满意的再生性能。 结果表明Fe3O4:Cu颗粒对(III)和AS(v)吸附具有很大的潜力。

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  • 来源
    《RSC Advances》 |2015年第62期|共8页
  • 作者单位

    Cent S Univ Sch Met &

    Environm Dept tment Environm Engn Changsha 410083 Hunan Peoples R China;

    Chinese Natl Engn Res Ctr Control &

    Treatment Hea Changsha 410083 Hunan Peoples R China;

    Cent S Univ Sch Met &

    Environm Dept tment Environm Engn Changsha 410083 Hunan Peoples R China;

    Cent S Univ Sch Met &

    Environm Dept tment Environm Engn Changsha 410083 Hunan Peoples R China;

    Cent S Univ Sch Met &

    Environm Dept tment Environm Engn Changsha 410083 Hunan Peoples R China;

    Chinese Natl Engn Res Ctr Control &

    Treatment Hea Changsha 410083 Hunan Peoples R China;

    Chinese Natl Engn Res Ctr Control &

    Treatment Hea Changsha 410083 Hunan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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