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Continuous flow synthesis of phosphate binding h-BN@magnetite hybrid material

机译：磷酸盐结合H-BN磁铁矿杂化材料的连续流合成

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摘要

Hexagonal boron nitride (h-BN) is rendered magnetically responsive in aqueous media by binding superparamagnetic magnetite nanoparticles 8.5-18.5 nm in diameter on the surface. The composite material was generated under continuous flow in water in a dynamic thin film in a vortex fluidic device (VFD) with the source of iron generated by laser ablation of a pure iron metal target in the air above the liquid using a Nd:YAG pulsed laser operating at 1064 nm and 360 mJ. Optimum operating parameters of the VFD were a rotational speed of 7.5k rpm for the 20 mm OD (17.5 mm ID) borosilicate glass tube inclined at 45 degrees, with a h-BN concentration at 0.1 mg mL(-1), delivered at 1.0 mL min(-1) using a magnetically stirred syringe to keep the h-BN uniformly dispersed in water prior to injection into the base of the rapidly rotating tube. The resulting composite material, containing 5.75% weight of iron, exhibited high phosphate ion adsorption capacity, up to 171.2 mg PO43- per gram Fe, which was preserved on recycling the material five times.
机译：六方氮化硼（h-BN）由表面上的结合超顺磁性纳米颗粒在直径8.5-18.5纳米呈现在含水介质中的磁响应。在涡流流体装置（VFD）中的动态薄膜中在水中连续流动产生复合材料，其中通过使用Nd：YAG脉冲在液体上方的空气中的纯铁金属靶的激光消融产生的铁来源激光在1064nm和360 mj工作。 VFD的最佳操作参数为20mMOD（17.5mm ID）硼硅酸盐玻璃管以45度倾斜的旋转速度为7.5krpm，H-Bn浓度为0.1mg ml（-1），在1.0时递送使用磁力搅拌注射器保持毫升分钟（-1）的h-BN均匀地注射之前分散在水进入快速旋转的管的基部。所得复合材料含有5.75％的铁，磷酸离子吸附能力高，可达171.2mg PO43-每克Fe，保存在将材料再循环到五次。

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  • 来源
    《RSC Advances》 |2018年第71期|共7页
  • 作者

    Al-antaki Ahmed Hussein Mohammed; Luo Xuan; Duan Alex; Lamb Robert N.; Eroglu Ela; Hutchison Wayne; Zou Yi-Chao; Zou Jin; Raston Colin L.;

  • 作者单位

    Flinders Univ S Australia Coll Sci &

    Engn Inst Nanoscale Sci &

    Technol Adelaide SA 5042 Australia;

    Flinders Univ S Australia Coll Sci &

    Engn Inst Nanoscale Sci &

    Technol Adelaide SA 5042 Australia;

    Univ Melbourne Trace Anal Chem Earth &

    Environm Sci TrACEES Melbourne Vic 3010 Australia;

    Univ Melbourne Trace Anal Chem Earth &

    Environm Sci TrACEES Melbourne Vic 3010 Australia;

    Curtin Univ Dept Chem Engn Perth WA Australia;

    Univ New South Wales Sch PEMS ADFA Campus Canberra Bc ACT 2610 Australia;

    Univ Queensland Mat Engn Brisbane Qld 4072 Australia;

    Univ Queensland Mat Engn Brisbane Qld 4072 Australia;

    Flinders Univ S Australia Coll Sci &

    Engn Inst Nanoscale Sci &

    Technol Adelaide SA 5042 Australia;

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  • 正文语种 eng
  • 中图分类 化学;
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