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首页> 外文期刊>Environmental Science & Technology >Versatile Process for the Preparation of Nanocomposite Sorbents: Phosphorus and Arsenic Removal
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Versatile Process for the Preparation of Nanocomposite Sorbents: Phosphorus and Arsenic Removal

机译：用于制备纳米复合吸附剂的通用方法：磷和砷去除

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摘要

Nanomaterials are being increasingly utilized for environmental remediation. The use of these materials, however, is greatly hindered due to challenges in material handling and deployment. Here we present a novel nanocomposite synthesis method based on the direct growth of nanoparticles on and within solid support materials, referred to as Crescoating. In this work, iron and copper nanoparticles have been grown on polyurethane support materials using this process and applied as sorbents for dissolved phosphorus and arsenic in water, respectively. These nanocomposite sorbents exhibit rapid sorption with saturation occurring in less than 5 min. The loading capacity is 104.8 mg PO_4~(3-) g~(-1) and 254.4 mg As(Ⅲ) g~(-1) for the iron and copper nanocomposite sorbents respectively, which is up to four times higher than commercially available alternatives. In addition, phosphorus can be recovered from the iron nanocomposite sorbent. This coating by growth process produces nanocomposites that do not emit particles and has the capability to be scaled and applied to other nanoparticles for diverse pollutant sorption applications.
机译：纳米材料越来越多地用于环境修复。然而，由于材料处理和部署的挑战，使用这些材料的使用极大地阻碍了。在这里，我们提出了一种基于纳米颗粒上的直接生长和固体载体材料中的直接生长的新型纳米复合材料合成方法，称为Crescoating。在这项工作中，使用该方法在聚氨酯载体材料上生长了铁和铜纳米颗粒，并将其作为溶解磷和砷的吸附剂施用于水中。这些纳米复合裂解物在少于5分钟的饱和时表现出快速吸附。钢和铜纳米复合吸附剂的负载能力为104.8mg PO_4〜（3-）G〜（3-）G〜（-1）和254.4mg为（Ⅲ）G〜（-1），其高于商业上可获得的4倍备择方案。此外，可以从铁纳米复合吸附剂中回收磷。通过生长过程产生该涂层，产生不发射颗粒的纳米复合材料，并且具有待缩放的能力并施加到其他纳米颗粒上以用于各种污染物吸附应用。

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  • 来源
    《Environmental Science & Technology》 |2020年第14期|9034-9043|共10页
  • 作者

    John W. Brockgreitens; Fatemeh Heidari; Abdennour Abbas;

  • 作者单位

    Department of Bioproducts and Biosystems Engineering University of Minnesota-Twin Cities St. Paul Minnesota 55108 United States;

    Department of Bioproducts and Biosystems Engineering University of Minnesota-Twin Cities St. Paul Minnesota 55108 United States;

    Department of Bioproducts and Biosystems Engineering University of Minnesota-Twin Cities St. Paul Minnesota 55108 United States;

  • 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
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