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首页> 外文会议>8th China international nanoscience and technology symposium >Polyelectrolyte multilayer film-assisted formation of zero-valent iron nanoparticles onto polymer nanofibrous mats
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Polyelectrolyte multilayer film-assisted formation of zero-valent iron nanoparticles onto polymer nanofibrous mats

机译：零价铁纳米粒子在聚合物纳米纤维垫上的聚电解质多层膜辅助形成

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摘要

A facile approach that combines the electrospinning technique and layer-by-layer (LbL) assembly method has been developed to synthesize and immobilize zerovalent iron nanoparticles (ZVI NPs) onto the surface of nanofibers for potential environmental applications, hi this approach, negatively charged cellulose acetate (CA) nanofibers fabricated by electrospinning CA solution were modified with bilayers composed of positively charged poly(diallyldimethyl-ammoniumchloride) (PDADMAC) and negatively charged poly(acrylic acid) (PAA) through electrostatic LbL assembly approach to form composite nanofibrous mats. The composite nanofibrous mats were immersed into the ferrous iron solution to allow Fe (Ⅱ) ions to complex with the free carboxyl groups of PAA, and then ZVI NPs were immobilized onto the composite nanofibrous mats instantly by reducing the ferrous cations. Combined scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), and thermogravimetry analysis demonstrated that the ZVI NPs are successfully synthesized and uniformly distributed into the polyelectrolyte (PE) multilayer films assembled onto the CA nanofibers. The present approach to synthesis ZVI NPs opens a new avenue to fabricating various materials with high surface area for environmental, catalytic, and sensing applications.
机译：已经开发了一种将静电纺丝技术和逐层（LbL）组装方法相结合的简便方法，以将零价铁纳米颗粒（ZVI NP）合成并固定在纳米纤维表面上，以用于潜在的环境应用。在这种方法中，带负电荷的纤维素通过静电LbL组装方法，将由静电纺丝CA溶液制成的乙酸酯（CA）纳米纤维修饰为带正电的聚二烯丙基二甲基氯化铵（PDADMAC）和带负电的聚丙烯酸（PAA）组成的双层，以形成复合纳米纤维垫。将复合纳米纤维垫浸入亚铁溶液中，使Fe（Ⅱ）离子与PAA的游离羧基络合，然后通过还原亚铁阳离子将ZVI NPs立即固定在复合纳米纤维垫上。组合扫描电子显微镜（SEM），透射电子显微镜（TEM），能量色散光谱（EDS）和热重分析表明，ZVI NPs已成功合成并均匀分布到组装在CA纳米纤维上的聚电解质（PE）多层膜中。本发明的合成ZVI NP的方法为制造用于环境，催化和传感应用的具有高表面积的各种材料开辟了新途径。

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  • 来源
  • 会议地点 Xiangtan(CN);Xiangtan(CN)
  • 作者

    Shili Xiao; Siqi Wu; Mingwu Shen; Rui Guo; Shanyuan Wang; Xianggang Shi;

  • 作者单位

    State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Textiles,and;

    College of Chemistry,Chemical Engineering,and Biotechnology,Donghua University,Shanghai 201620,China;

    College of Chemistry,Chemical Engineering,and Biotechnology,Donghua University,Shanghai 201620,China;

    College of Chemistry,Chemical Engineering,and Biotechnology,Donghua University,Shanghai 201620,China;

    College of Textiles,Chemical Engineering,and Biotechnology,Donghua University,Shanghai 201620,China;

    State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry,Chemical Engineering,and Biotechnology,Donghua University,Shanghai 201620,China;

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  • 正文语种 eng
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