Abstract Herein, we present Graphene-meso Iron Oxide composite incorporated Polyurethane foam (GPUF) as an elite sorbent for organic contaminants and oils. Anchoring Graphene-meso Iron Oxide composite switches Polyurethane foam to a super hydrophobic and super oleophilic moiety. Detailed structural, microscopic and wettability studies point the cooperative effect of the 3D porous polyurethane scaffold and the effect of Graphene-mesoporous Iron oxide composite on the adsorption dynamics. Benefitting from the hierarchical porous structure and heterogeneity, the as-fabricated sponge manifested superior selective adsorption capacity for a wide variety of oils and organic pollutants in the range 90–316 gg−1. Application of GPUF was demonstrated by the quick and selective removal of oils from water under magnetic field. In addition to this, the adsorbate can be released after sorption by simple squeezing without any deterioration in structure and performance, underlining the recyclability of the sorbent for over 150 cycles. Moreover, GPUF manifests appealing adsorption capacity in complex environments also. The results of the study promise a novel sorbent which can be easily scaled up for large scale treatment of oil spills.

中文翻译：

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磁驱动石墨烯涂层聚氨酯泡沫作为油和有机物的潜在吸附剂

摘要在此，我们提出了石墨烯 - 中观氧化铁复合材料结合聚氨酯泡沫 (GPUF) 作为有机污染物和油的优良吸附剂。锚定石墨烯-中观氧化铁复合材料将聚氨酯泡沫转变为超疏水和超亲油部分。详细的结构、微观和润湿性研究指出了 3D 多孔聚氨酯支架的协同作用和石墨烯-介孔氧化铁复合材料对吸附动力学的影响。受益于分级多孔结构和异质性，制成的海绵对 90-316 gg-1 范围内的各种油和有机污染物表现出优异的选择性吸附能力。GPUF 的应用通过在磁场下从水中快速和选择性地去除油来证明。除此之外，吸附后通过简单的挤压即可释放吸附物，而不会降低结构和性能，这表明吸附剂可循环使用 150 次以上。此外，GPUF 在复杂环境中也表现出吸引人的吸附能力。研究结果有望开发出一种新型吸附剂，可以轻松扩大规模，用于大规模处理石油泄漏。