Water pollution has become a worldwide problem due to ever-increasing industrial wastewater. An ideal adsorbing material is able to remove oils, organic solvents and dyes from water efficiently, particularly with a high adsorption capacity and reusability. Herein, the authors report a novel strategy of synthesis of a three-dimensional functionalized graphene aerogel (FGA) with porous structures for effective water purification. The FGA is prepared by a facile one-step hydrothermal method, in which graphene oxide is reduced by ethylenediamine and modified by dodecyltrimethoxysilane to enhance hydrophobicity. When used as an adsorbing material, the FGA exhibits a high adsorption capacity (130–242 g/g for oils and organic solvents, 197–596 mg/g for dyes). Furthermore, the FGA also exhibits high reusability and durability by being reused for organic solvent–water separation for ten cycles without losing its hydrophobicity, which makes it a good candidate for industrial water treatment.

中文翻译：

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一种功能化的石墨烯气凝胶，可有效净化水

由于工业废水的不断增加，水污染已成为世界性问题。理想的吸附材料能够有效地从水中去除油，有机溶剂和染料，尤其是具有高吸附能力和可重复使用性。本文中，作者报告了一种新颖的合成策略，该策略可合成具有多孔结构的三维功能化石墨烯气凝胶（FGA），以进行有效的水净化。FGA是通过简便的一步水热法制备的，其中氧化石墨烯被乙二胺还原，并被十二烷基三甲氧基硅烷改性以增强疏水性。当用作吸附材料时，FGA具有很高的吸附能力（油和有机溶剂为130–242 g / g，染料为197–596 mg / g）。此外，