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Preparation of a new 2D MXene/PES composite membrane with excellent hydrophilicity and high flux

机译:制备具有优异的亲水性和高通量的新型2D MXENE / PES复合膜

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摘要

MXene, a new 2D transition metal carbide-based material, possesses excellent electrical conductivity and hydrophilicity. In this study, Ti3C2Tx (where T represents a functional group (O, OH, and/or F)) was produced by etching and ultrasonicating Ti3AlC2. Then, it was used to prepare the MXene composite membrane via a simple filtration method performed at 0.2 MPa on a polyethersulfone (PES) ultrafiltration membrane. The MXene composite membrane shows excellent flux (115 L m(-2) h(-1)) and favorable rejection to Congo red dye (92.3% at 0.1 MPa). The membrane demonstrated rejection to inorganic salts below 23% with flux above 432 L m(-2) h(-1) at 0.1 MPa. Due to its loose lamellar structure, the composite membrane is able to demonstrate efficient permselectivity in the separation of dyes from salts. Furthermore, the composite membrane shows excellent hydrophilicity and flux because of the lamellar hydrophilic MXene.
机译:MXIN,一种新的2D过渡金属碳化物基材料具有优异的导电性和亲水性。 在该研究中,通过蚀刻和超声波Ti3AlC2制备Ti3C2Tx(其中T代表官能团(O,OH和/或F))。 然后,用于通过在聚醚砜(PES)超滤膜上在0.2MPa下进行的简单过滤方法制备MXENE复合膜。 MXINE复合膜显示出优异的助焊剂(115μm(-2)H(-1)),并且对刚果红染料有利的排斥(在0.1MPa下92.3%)。 膜在0.1MPa的0.1MPa下,在432Lm(-2)H(-1)以上的助焊剂中,抑制在23%以下的无机盐。 由于其松散的层状结构,复合膜能够在盐的染料分离中表现出有效的渗滤性。 此外,复合膜由于层状亲水性MXENE而显示出优异的亲水性和通量。

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  • 来源
    《RSC Advances》 |2017年第89期|共7页
  • 作者单位

    Dalian Univ Technol Sch Petr &

    Chem Engn Panjin 124221 Peoples R China;

    Dalian Univ Technol Sch Petr &

    Chem Engn Panjin 124221 Peoples R China;

    Dalian Univ Technol Sch Petr &

    Chem Engn Panjin 124221 Peoples R China;

    Dalian Univ Technol Sch Petr &

    Chem Engn Panjin 124221 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem Dalian 116024 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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