Multifunctional superhydrophobic adsorbents by mixed-dimensional particles assembly for polymorphic and highly efficient oil-water separation
Multifunctional superhydrophobic adsorbents by mixed-dimensional particles assembly for polymorphic and highly efficient oil-water separation
复制标题
混合维颗粒组装的多功能超疏水吸附剂用于多晶型高效油水分离
DOI：
10.1016/j.jhazmat.2020.124374
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发表时间：
2021
影响因子：
13.6
通讯作者：
Xue Qunji
中科院分区：
文献类型：
--
作者：
Xu Yong;Wang Gang;Zhu Lijing;Shen Luli;Zhang Zhepeng;Ren Tianhui;Zeng Zhixiang;Chen Tao;Xue Qunji
超润湿材料，特别是超疏水吸附材料作为一种新兴的先进油水分离材料，在溢油和工业含油废水的处理中受到了广泛关注。然而，如何以一种环保、可扩展的方法制造出坚固、多功能的超疏水材料，用于多任务油水分离和粘性原油的快速清理，仍然是一个挑战。在此基础上，提出了一种无化学试剂改性的固-固相球磨策略，以废煤烟为固相超疏水改性剂，制备非均相超疏水复合材料。制备了一系列具有特殊微纳结构的共价键约束煤烟-石墨烯（S-GN）或煤烟- fe3o4 （S-Fe3O4）复合材料。通过“胶水+超疏水颗粒”的方法，将制备的煤烟基复合颗粒轻松加载在海绵的多孔骨架上，获得多功能超疏水吸附剂。所报道的超疏水吸附剂具有强大的化学和机械稳定性，方便的磁收集，60-142 g g−1的高吸油能力，持久的可回收性（>250次），高效的分离效率（>99.5%）和出色的自加热性能，使其能够胜任多任务和复杂环境（浮油，连续油收集，水包油乳液和粘性溢油）的油水分离。
Supra-wetting materials, especially superhydrophobic absorption materials, as an emerging advanced oil-water separation material have attracted extensive concern in the treatment of oil spillage and industrial oily wastewater. However, it is still a challenge to fabricate robust and multifunctional superhydrophobic materials for the multitasking oil-water separation and fast clean-up of the viscous crude oil by an environment-friendly and scalable method. Herein, a solid-solid phase ball-milling strategy without chemical reagent-free modification was proposed to construct heterogeneous superhydrophobic composites by using waste soot as the solid-phase superhydrophobic modifier. A series of covalent bond restricted soot-graphene (S-GN) or soot-Fe3O4(S-Fe3O4) composite materials with a peculiar micro-nano structure are prepared. Through "glue+superhydrophobic particles" method, the prepared soot-based composite particles are facilely loaded on the porous skeleton of the sponge to obtain multifunctional superhydrophobic adsorbents. The reported superhydrophobic adsorbents exhibited robust chemical and mechanical stability, convenient magnetic collection, the high oil absorption capacity of 60–142 g g−1, durable recyclability (>250 cycles), efficient separation efficiency (>99.5%) and outstanding self-heated performance, which enable them to be competent for oil-water separation in multitasking and complex environment (floating oils, continuous oil collection, oil-in-water emulsion, and viscous oil-spills).