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首页> 外文期刊>Environmental Science & Technology >Comment on 'Zirconium-Carbon Hybrid Sorbent for Removal of Fluoride from Water: Oxalic Acid Mediated Zr(Ⅳ) Assembly and Adsorption Mechanism'
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Comment on 'Zirconium-Carbon Hybrid Sorbent for Removal of Fluoride from Water: Oxalic Acid Mediated Zr(Ⅳ) Assembly and Adsorption Mechanism'

机译:关于“用于去除水中氟化物的锆碳杂化吸附剂:草酸介导的Zr(Ⅳ)的组装和吸附机理”

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摘要

Velazquez-Jimenez L.H. and coauthors reported that ZrOx-AC increased the fluoride adsorption capacity by a factor of 3 oversimple Zr-AC in which added oxalic acid (Ox) mediated to demonstrate a positive effect on controlling nudea-tion and limiting growth and size of Zr(Ⅳ) oxide nanoparticles so as to Increases the zirconium active adsorption sites. They propose that fluoride adsorption occurs in the ZrOx-AC surface sites with -OH displacement and/or interacts with positive charge of zirconium to form -COOH groups in the oxalate acid, see Figure 3C. As author pointed out that ZrO_2 can develop di-, tri-, tetra-, and penta-fluoro zirconium species without the presence of a complexing agent such as oxalic acid. If the fluoride concentration is high enough, it would completely desorb oxalate acid from surface of ZrOx-AC.
机译:Velazquez-Jimenez LH和合著者报道,ZrOx-AC使氟化物的吸附能力提高了3个简单Zr-AC,其中添加的草酸(Ox)介导对控制裸核和限制其生长和尺寸具有积极作用。 Zr(Ⅳ)氧化物纳米粒子,以增加锆的活性吸附位。他们提出氟化物吸附会在ZrOx-AC表面位点发生-OH置换和/或与锆的正电荷相互作用,从而在草酸中形成-COOH基团,见图3C。正如作者指出的那样,ZrO_2可以在不存在络合剂(例如草酸)的情况下形成二氟,三氟,四氟和五氟锆物种。如果氟化物浓度足够高,它将从ZrOx-AC表面完全解吸草酸。

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  • 来源
    《Environmental Science & Technology》 |2015年第19期|11982-11983|共2页
  • 作者

    Yaping Zhao;

  • 作者单位

    School of Ecological and Environmental Science, East China Normal University, Shanghai, 200241, 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
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