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Superhydrophobic and superoleophilic graphene aerogel for adsorption of oil pollutants from water

机译：超疏水和高脂纤维石墨烯气凝胶，用于吸附来自水的油污染物

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摘要

Three-dimensional graphene based materials with superhydrophobic/superoleophilic attributes are highly desirable for water treatment. The graphene aerogel (GA) was prepared by hydrothermal reaction of the graphene oxide (GO) solution in the presence of dopamine followed by freeze-drying. The subsequent surface modification of GA using fluoroalkylsilane occurred by a vapor-liquid deposition process. The superhydrophobic graphene aerogel (SGA) fabricated from GA exhibits superhydrophobicity and superoleophilicity with the water contact angle of 156.5 degrees and the oil contact angle of 0 degrees. With this property, SGA could selectively adsorb various types of oils/organic solvents from the oil-water mixture. Moreover, the SGA possesses excellent low bulk density (9.6 mg cm(-3)), high absorption capacity (110-230 fold weight gain), and superior adsorption recyclability. With all these desirable features, the SGA is a promising candidate for oil-polluted water remediation.
机译：基于三维石墨烯基材料具有超疏水/超级性归属的材料对于水处理是非常理想的。 石墨烯气凝胶（Ga）通过石墨烯（GO）溶液在多巴胺存在下的水热反应之后制备，然后冷冻干燥。 使用氟代烷基硅烷发生的Ga的随后表面改性通过蒸汽沉积方法发生。 由Ga制造的超疏水石墨烯气凝胶（SGA）表现出超疏水性和富含脂质，其水接触角为156.5度，油接触角为0度。 通过这种特性，SGA可以从油水混合物中选择性地吸附各种类型的油/有机溶剂。 此外，SGA具有优异的低堆积密度（9.6mg cm（-3）），高吸收能力（110-230倍增加）和优异的吸附再循环性。 通过所有这些所需的特征，SGA是用于污染水整化的有希望的候选者。

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  • 来源
    《RSC Advances》 |2019年第15期|共6页
  • 作者

    Wang Hui; Wang Chunchun; Liu Shuai; Chen Lin; Yang Sudong;

  • 作者单位

    Chinese Acad Sci Key Lab Funct Mat &

    Devices Special Environm Xinjiang Tech Inst Phys &

    Chem Lab Environm Sci &

    Technol Urumqi 830011 Peoples R China;

    SEL BIOCHEM Xinjiang Co Ltd Shihezi 832000 Peoples R China;

    Chinese Acad Sci Key Lab Funct Mat &

    Devices Special Environm Xinjiang Tech Inst Phys &

    Chem Lab Environm Sci &

    Technol Urumqi 830011 Peoples R China;

    Xinjiang Uygur Autonomous Reg Prod Qual Supervis Urumqi 830011 Peoples R China;

    Chinese Acad Sci Key Lab Funct Mat &

    Devices Special Environm Xinjiang Tech Inst Phys &

    Chem Lab Environm Sci &

    Technol Urumqi 830011 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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