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首页> 外文期刊>ACS applied materials & interfaces >Ultrafast and Efficient Extraction of Uranium from Seawater Using an Amidoxime Appended Metal-Organic Framework
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Ultrafast and Efficient Extraction of Uranium from Seawater Using an Amidoxime Appended Metal-Organic Framework

机译：使用Amidoxime附加金属有机框架超快和高效提取海水铀的铀

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摘要

Enrichment of uranyl from seawater is crucial for the sustainable development of nuclear energy, but current uranium extraction technology suffers from multiple drawbacks of low sorption efficiency, slow uptake kinetics, or poor extraction selectivity. Herein, we prepared the first example of amidoxime appended metal organic framework UiO-66-AO by a postsynthetic modification method for rapid and efficient extraction of uranium from seawater. UiO-66-AO can remove 94.8% of uranyl ion from Bohai seawater within 120 min and 99% of uranyl ion from Bohai seawater containing extra 500 ppb uranium within 10 min. The uranyl sorption capacity in a real seawater sample was determined to be 2.68 mg/g. In addition, the recyclability of the UiO-66-AO framework was demonstrated for at least three adsorption/desorption cycles. The origin for the superior sorption capability was further probed by extended X-ray absorption fine structure (EXAFS) analysis on the uranium-sorbed sample, suggesting multiple amidoxime ligands are able to chelate uranyl(VI) ions, forming a hexagonal bipyramid coordination geometry.
机译：来自海水中铀酰的富集对于核能的可持续发展至关重要，但目前的铀提取技术遭受了低吸附效率，缓慢吸收动力学或促进选择性差的多重缺点。在此，我们制备了通过后氧化性改性方法制备了偕胺肟的第一个实施例，用于从海水中快速有效地提取铀的后合成改性方法。 UIO-66-AO可以在120分钟内从渤海海水中从渤海海水中除去94.8％的铀酰离子，并在10分钟内从渤海海水中含有额外的500ppb铀的铀离子。真正海水样品中的铀酰吸附能量确定为2.68mg / g。此外，对至少三种吸附/解吸循环证明了UIO-66-AO框架的可回收性。通过延长X射线吸收细结构（EXAFS）分析对铀 - 吸附样品的延长的X射线吸收性细结构（EXAF）分析进一步探测了卓越的吸附能力，表明多个偕胺肟配体能够螯合铀酰（VI）离子，形成六边形的双嘧酰胺配位几何形状。

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  • 来源
    《ACS applied materials & interfaces》 |2017年第38期|共6页
  • 作者

    Chen Long; Bai Zhuanling; Zhu Lin; Zhang Linjuan; Cai Yawen; Li Yuxiang; Liu Wei; Wang Yanlong; Chen Lanhua; Juan Diwu; Wang Jianqiang; Chai Zhifang; Wang Shuao;

  • 作者单位

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

    Chinese Acad Sci Shanghai Inst Appl Phys Shanghai 201800 Peoples R China;

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

    Chinese Acad Sci Shanghai Inst Appl Phys Shanghai 201800 Peoples R China;

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

    Soochow Univ Sch Radiol &

    Interdisciplinary Sci RAD X 199 Renai Rd Suzhou 215123 Peoples R China;

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

    metal-organic frameworks; amidoxime; uranyl; adsorption; seawater;

    机译：金属有机框架;偕胺肟;铀;吸附;海水;

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