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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Efficient removal of uranium(VI) from simulated seawater using amidoximated polyacrylonitrile/FeOOH composites
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Efficient removal of uranium(VI) from simulated seawater using amidoximated polyacrylonitrile/FeOOH composites

机译：使用脒氧化聚丙烯腈/ FeOOH复合材料有效地从模拟海水中除去铀（VI）

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摘要

The ability to recover uranium, an important nuclear fuel, from seawater provides the potential for long-term sustainable fuel supply for nuclear energy. In this work, novel amidoximated polyacrylonitrile/FeOOH (FeOOH-APAN) composites were synthesized and characterized by CHN analysis, Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), N-2 adsorption-desorption, and X-ray photoelectron spectroscopy (XPS). In batch adsorption experiments, a variety of parameters were investigated in detail. The FeOOH-APAN composites exhibit high adsorption capacities (q(L) = 980.39 mg g(-1), T = 298 K), superior to many other materials. In addition, they possess large K-d values (>10(4) mL g(-1) at 25-400 mg L-1 U concentration), high removal rates (similar to 95% at 25-300 mg L-1, and similar to 90% for ppb level simulated seawater), excellent selectivity and rapid capturing rates for uranium. XPS analysis shows that the removal of uranium is mainly related to amidoxime groups, involving the interaction with oxime oxygen and oxime nitrogen. In this paper, a more dominant binding mode is proposed, namely eta(2) coordination.
机译：从海水中回收铀，重要核燃料的能力为核能提供了长期可持续燃料供应的潜力。在这项工作中，通过CHN分析合成了新型酰胺氧化聚丙烯腈/ FeOOH（FeOOH-APAN）复合材料，傅立叶变换红外光谱（FT-IR），X射线衍射（XRD），扫描电子显微镜（SEM），N -2吸附 - 解吸和X射线光电子能谱（XPS）。在批量吸附实验中，详细研究了各种参数。 FeOOH-APAN复合材料表现出高吸附容量（Q（L）= 980.39mg（-1），T = 298 k），优于许多其他材料。此外，它们具有大的Kd值（> 10（4）ml g（-1），在25-400mg L-1 U浓度下），高除去速率（类似于25-300mg L-1的95％，和与PPB水平模拟海水的90％相似），优异的选择性和铀的快速捕获速率。 XPS分析表明，去除铀主要与偕胺肟组相关，涉及与肟氧和肟氮的相互作用。在本文中，提出了一种更主导的结合模式，即ETA（2）协调。

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    Wei Xintao; Liu Qi; Zhang Hongsen; Lu Zetong; Liu Jingyuan; Chen Rongrong; Li Rumin; Li Zhangshuang; Liu Peili; Wang Jun;

  • 作者单位

    Harbin Engn Univ Minist Educ Key Lab Superlight Mat &

    Surface Technol Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Minist Educ Key Lab Superlight Mat &

    Surface Technol Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Minist Educ Key Lab Superlight Mat &

    Surface Technol Harbin 150001 Heilongjiang Peoples R China;

    Heilongjiang Univ Sci &

    Technol Harbin 150027 Heilongjiang Peoples R China;

    Harbin Engn Univ Minist Educ Key Lab Superlight Mat &

    Surface Technol Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Minist Educ Key Lab Superlight Mat &

    Surface Technol Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Minist Educ Key Lab Superlight Mat &

    Surface Technol Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Minist Educ Key Lab Superlight Mat &

    Surface Technol Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Coll Mat Sci &

    Chem Engn Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Minist Educ Key Lab Superlight Mat &

    Surface Technol Harbin 150001 Heilongjiang Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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