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首页> 外文期刊>Applied Surface Science >Polyaniline (PANI) modified bentonite by plasma technique for U(VI) removal from aqueous solution
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Polyaniline (PANI) modified bentonite by plasma technique for U(VI) removal from aqueous solution

机译：聚苯胺（PANI）改性膨润土的等离子体技术从水溶液中去除U（VI）

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摘要

Polyaniline (PANI) modified bentonite (PANI/bentonie) was synthesized by plasma induced polymerization of aniline on bentonite surface, and applied to uptake of uranium(VI) ions from aqueous solution. The as-synthesized PANI/bentonie was characterized by scanning electron microscopy (SEM), powder X-ray diffraction (XRD), thermal gravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). Batch adsorption technique was utilized to investigate the adsorption of U(VI) on bentonite and PANI/bentonite. The adsorption of U(VI) (10 mg/L) on PANI/bentonite surface is fairly depend on solution pH, ionic strength, and temperature in solution. The modified PANI on PANI/bentonite surface significantly enhances its adsorption capability for U(VI). The presence of humic acid (HA) can sound enhance U(VI) adsorption on PANI/bentonite at pH < 6.5 because of the strong complexation, and inhibits U(VI) adsorption at pH > 6.5. According to the thermodynamic parameters, the adsorption of U(VI) on PANI/bentonite surface is a spontaneous and endothermic process. The results highlight the application of PANI/bentonite composites as candidate material for the uptake of trace U(VI) from aqueous solution. (C) 2017 Elsevier B.V. All rights reserved.
机译：聚苯胺（PANI）改性膨润土（PANI / bentonie）是通过等离子体诱导的苯胺在膨润土表面聚合而合成的，并用于从水溶液中吸收铀（VI）离子。通过扫描电子显微镜（SEM），粉末X射线衍射（XRD），热重分析（TGA）和X射线光电子能谱（XPS）对合成后的PANI /膨润土进行表征。分批吸附技术被用来研究U（VI）在膨润土和PANI /膨润土上的吸附。 U（VI）（10 mg / L）在PANI /膨润土表面的吸附完全取决于溶液的pH，离子强度和溶液温度。 PANI /膨润土表面上的改性PANI显着增强了其对U（VI）的吸附能力。腐殖酸（HA）的存在可以增强U（VI）在pH <6.5时在PANI /膨润土上的吸附，因为它具有很强的络合作用，而在pH> 6.5时可以抑制U（VI）的吸附。根据热力学参数，U（VI）在PANI /膨润土表面的吸附是一个自发的吸热过程。结果突出了PANI /膨润土复合物作为从水溶液中吸收痕量U（VI）的候选材料的应用。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2017年第31期|331-337|共7页
  • 作者

    Liu Xinghao; Cheng Cheng; Xiao Chengjian; Shao Dadong; Xu Zimu; Wang Jiaquan; Hu Shuheng; Li Xiaolong; Wang Weijuan;

  • 作者单位

    China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China|Hefei Univ Technol, Intelligent Mfg Technol Res Inst, Hefei 230088, Peoples R China;

    Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China;

    China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China;

    Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China;

    Hefei Univ Technol, Intelligent Mfg Technol Res Inst, Hefei 230088, Peoples R China;

    Hefei Univ Technol, Intelligent Mfg Technol Res Inst, Hefei 230088, Peoples R China;

    Hefei Univ Technol, Intelligent Mfg Technol Res Inst, Hefei 230088, Peoples R China;

    China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China;

    China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Uranium; Bentonie; Adsorption; Polyaniline; Plasma technique;

    机译：铀;苯醌;吸附;聚苯胺;等离子技术;

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