Organic pollution is considered as a long-term, urgent global issue for energy, environmental, and ecological applications. Carbon-based materials have shown great potential in addressing this global issue. However, development of low-cost and high-performance of carbon-based three-dimensional materials has also proven to challenging for removal of organic pollutants from water. Here, we developed a new technique combining a liquid-assisted electrospinning and interface self-assembly of graphene to successfully fabricate novel graphene fluffy nanofibrous scaffold (GFNs) as an efficient organic pollution absorbent. The resultant GFNs with several advantages of distinctive 3D fluffy macro-structure, super porosity, low density, strong mechanical stability, and super hydrophobicity/oleophicity, demonstrated high adsorption capacity for organic solvents (201 times their own weight) and oils (119 times their own weight), as well as excellent recyclability by simple extrusion. Different from conventional graphene sponges that require a high content of graphene for complex fabrication, the preparation of GFNs only used a very small amount of graphene (1.0 mg/cm³) to achieve comparable or even better adsorption capacity and recyclability. Because of the viable synthesis method, GFNs with unique advantages and superior performance show great potential for industrial applications in environmental protections such as oil pollution cleanup and wastewater treatment.

中文翻译：

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石墨烯纳米纤维泡沫被设计为一种高效的吸油剂

有机污染被认为是能源，环境和生态应用领域的长期，紧迫的全球性问题。碳基材料在解决这一全球性问题方面显示出巨大潜力。但是，开发低成本，高性能的碳基三维材料也已证明对去除水中的有机污染物具有挑战性。在这里，我们开发了一种新技术，该技术结合了石墨烯的液体辅助静电纺丝和界面自组装技术，成功地制造了新型石墨烯蓬松纳米纤维支架（GFNs）作为有效的有机污染吸收剂。所得的GFN具有以下几个优点：独特的3D蓬松宏观结构，超孔隙率，低密度，强机械稳定性和超疏水性/疏油性，展示了对有机溶剂（自身重量的201倍）和油类（自身重量的119倍）的高吸附能力，以及通过简单挤出的优异可回收性。与传统石墨烯海绵需要大量石墨烯进行复杂制造不同，GFN的制备仅使用非常少量的石墨烯（1.0 mg / cm³）达到可比甚至更好的吸附能力和可回收性。由于可行的合成方法，具有独特优势和优异性能的GFN在工业领域的环境保护中（如油污净化和废水处理）显示出巨大的潜力。