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首页> 外文期刊>RSC Advances >Electrospun membrane composed of poly [acrylonitrile-co-(methyl acrylate)-co-(itaconic acid)] terpolymer and ZVI nanoparticles and its application for the removal of arsenic from water
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Electrospun membrane composed of poly [acrylonitrile-co-(methyl acrylate)-co-(itaconic acid)] terpolymer and ZVI nanoparticles and its application for the removal of arsenic from water

机译：电纺膜由聚[丙烯腈 - 共（丙烯酸甲酯）-co-（衣康酸）]三元共聚物和ZVI纳米粒子及其用于从水中除去砷的应用

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We present a facile approach to immobilizing nanoscale zero valent iron (nZVI) particles onto an electrospun membrane based on poly[acrylonitrile-co-(methyl acrylate)-co-(itaconic acid)] (hereinafter referred to as AN/ MA/IA). The nZVI particles were synthesized under a nitrogen atmosphere by reducing Fe(III) cations with sodium borohydride NaBH4 in the presence of an AN/MA/IA membrane as a supporting scaffold. The synthesized nZVI particles are uniformly distributed into the membrane with a mean diameter ranging from 70 to 100 nm. The AN/MA/IA/nZVI membrane was characterized using SEM-EDX, XRD, XPS, TGA, ATR-FTIR, field dependent magnetization measurements using a super conducting quantum interference device (SQUID) magnetometer and Mossbauer spectroscopy. XRD analysis, Mossbauer spectroscopy and magnetization measurements confirmed the presence of the nZVI supported AN/MA/IA membrane, but XPS analysis showed that the surface of the nZVI particles oxidized to iron oxide forms, suggesting a core shell structure of nZVI on the membrane. We show that the composite AN/MA/IA/nZVI membrane can effectively remove As(III) and As(V) from water with a sorption capacity of 46.7 mg g(-1) and 46.4 mg g(-1) for As(III) and As(V), respectively. Inner-sphere surface complexation, oxidation and reduction reaction, ion exchange, electrostatic repulsion and functional group interaction are discussed as the major mechanisms involved in the arsenic removal by the functionalized membrane. The repeated cycles of adsorption/ desorption and regeneration using 0.1 M NaOH signifies the AN/MA/IA/nZVI membrane as an efficient material for the removal of arsenic contamination from water.
机译：我们提出了一种基于聚[丙烯腈 - 共（丙烯酸甲酯）-co-（衣康酸） - （衣康酸） - （衣康酸）]（下文称为AN / MA / IA）将纳米级零价铁（NZVI）颗粒固定到电纺膜上的容纳方法。通过将硼氢化钠NaBH4作为支撑支架在氮气中通过硼氢化钠NaBH4减少Fe（III）阳离子，在氮气氛下合成NZVI颗粒。合成的NZVI颗粒均匀地分布到膜中，平均直径范围为70至100nm。使用SEM-EDX，XRD，XPS，TGA，ATR-FTIR，使用超级导电量子干涉装置（鱿鱼）磁力计和MOSSBAUER光谱，表征AN / MA / IA / NZVI膜。 XRD分析，莫斯堡光谱和磁化测量证实了NZVI的存在支持的A / MA / IA膜，但XPS分析表明，NZVI颗粒的表面氧化成氧化铁形式，表明膜上NZVI的核心壳结构。我们表明复合AN / MA / IA / NZVI膜可以有效地从具有46.7mg g（-1）和46.4mg g（-1）的吸附能力的水中的（III）和（v）。（ iii）分别为（v）。讨论内球表面络合，氧化和还原反应，离子交换，静电排斥和官能团相互作用作为官能化膜砷除去的主要机制。使用0.1M NaOH的重复循环的吸附/解吸和再生，表示AN / MA / IA / NZVI膜作为用于从水中去除砷污染的有效材料。

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  • 来源
    《RSC Advances》 |2016年第111期|共13页
  • 作者

    Padil Vinod Vellora Thekkae; Filip Jan; Suresh Kattimuttathu Ittara; Waclawek Stanislaw; Cernik Miroslav;

  • 作者单位

    Tech Univ Liberec Lab Chem Remediat Proc Inst Nanomat Adv Technol &

    Innovat Studentska 1402-2 Liberec 46117 1 Czech Republic;

    Fac Sci Reg Ctr Adv Technol &

    Mat Slechtitelu 27 Olomouc 77146 Czech Republic;

    CSIR Indian Inst Chem Technol Polymers &

    Funct Mat Div Uppal Rd Hyderabad 50007 Andhra Pradesh India;

    Tech Univ Liberec Lab Chem Remediat Proc Inst Nanomat Adv Technol &

    Innovat Studentska 1402-2 Liberec 46117 1 Czech Republic;

    Tech Univ Liberec Lab Chem Remediat Proc Inst Nanomat Adv Technol &

    Innovat Studentska 1402-2 Liberec 46117 1 Czech Republic;

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