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Superhydrophobic mesoporous graphene for separation and absorption

机译:用于分离和吸收的超疏水介孔石墨烯

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摘要

Mesoporous graphene with a surface area of 306a m2 g -1 was synthesized by employing CaCO3 microspheres as hard templates. By surface modification with polydimethylsiloxane (PDMS) through chemical vapor deposition, the wettability of as-treated mesoporous graphene can be tailored to be superhydrophobic to water while superoleophilic to oils. The deposition of the low-surface-energy silicon-coating originated from PDMS pyrolysis on porous graphene was confirmed by X-ray photoelectron spectroscopy. As a result of its porous structures and excellent surface superhydrophobicity, the PDMS-treated mesoporous graphene exhibits good selectivity, excellent recyclability, and good absorption performance (up to 66a g g-1) for a wide range of oils and organic solvents. Thus, leading to potential use in a variety of applications such as water treatment and purification as well as cleanup of oil spills. Mesoporous graphene with a surface area of 306a m 2 g-1 has been synthesized by employing CaCO3 microspheres as hard templates. By surface modification with polydimethylsiloxane, the as-treated mesoporous graphene exhibited excellent absorption selectivity and recyclability, which has great potential in water purification, environmental protection, and cleanup of oil spills (see figure).
机译:通过使用CaCO 3微球作为硬模板,合成具有306A M2G -1的中孔石墨烯。通过通过化学气相沉积与聚二甲基硅氧烷(PDMS)的表面改性,可以根据含有处理的介孔石墨烯的润湿性,以使水的超疏水,同时对油。通过X射线光电子能谱证实来自多孔石墨烯的PDMS热解的低表面能硅涂层的沉积。由于其多孔结构和优异的表面超流性,PDMS处理的介孔石墨烯具有良好的选择性,优异的可再循环性和良好的吸收性能(高达66A G-1),用于各种油和有机溶剂。因此,导致各种应用中的潜在用途,例如水处理和净化以及溢油的清理。通过用CaCO 3微球作为硬模板,已经合成了具有306A M 2 G-1的中孔石墨烯。通过用聚二甲基硅氧烷的表面改性,所处理的介孔石墨烯表现出优异的吸收选择性和可回收性,其净水,环境保护和溢油的清除具有巨大潜力(见图)。

著录项

  • 来源
    《ChemPlusChem》 |2013年第10期|共6页
  • 作者单位

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Ministry of Education Lanzhou;

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Ministry of Education Lanzhou;

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Ministry of Education Lanzhou;

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Ministry of Education Lanzhou;

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Ministry of Education Lanzhou;

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Ministry of Education Lanzhou;

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Ministry of Education Lanzhou;

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Ministry of Education Lanzhou;

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Ministry of Education Lanzhou;

    State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Ministry of Education Lanzhou;

    State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

    absorption; graphene; selectivity; superhydrophobicity;

    机译:吸收;石墨烯;选择性;超疏水性;

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