Layered gel emulsion-templated Janus porous composites for emulsified oil separation

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Advanced Composites and Hybrid Materials Pub Date : 2024-10-29 DOI:10.1007/s42114-024-01033-y

Shixiang Zuo, Chunyu Wang, Nawaa Ali Husaykan Alshammari, Salah Mohamad El-Bahy, Rong Xu, Saijie Li, Lei Wang, Chao Yao, Zeinhom Mohamad El-Bahy, Haoguan Gui

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Abstract

Efficient separation of emulsified oil is urgently needed to repair the ecological environment, given the explosive development in modern industrial civilization. Herein, Janus porous composites were constructed using two different paraffin oil-in-dimethylsulfoxide (DMSO) gel emulsions. One of the gel emulsions contained graphene oxide (GO) within the DMSO phase, while the other continuous phase was dissolved with triarm hydroxyl-terminated poly(ε-caprolactone) (PCL-triol). To create Janus porous composites, the gel emulsions were overlaid and solidified with poly[(phenyl isocyanate)-co-formaldehyde] through step-growth polymerization. The resultant GO/PCL Janus porous composites exhibited an asymmetric double-layer structure with a tightly bonded interface. GO/PCL Janus porous composites displayed asymmetric surface wettability, functioning as a liquid diode and enabling effective separation of oil-in-water (O/W) miniemulsion. Under simulated 1.2 sun irradiation, the separation efficiency remained above 95%, and the flux increased to nearly four times that observed without solar irradiation. Furthermore, the Janus porous composite demonstrated excellent reusability, maintaining efficacy after ten cycles of separating emulsified oil. These Janus porous composites demonstrated excellent performance in oil-water separation, making them an ideal candidate for such applications.

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用于乳化油分离的层状凝胶乳液模板 Janus 多孔复合材料

随着现代工业文明的爆炸式发展，迫切需要对乳化油进行高效分离，以修复生态环境。本文利用两种不同的石蜡油-二甲基亚砜（DMSO）凝胶乳液构建了 Janus 多孔复合材料。其中一种凝胶乳液的二甲基亚砜相中含有氧化石墨烯（GO），而另一种连续相则溶解有三arm羟基端聚己内酯（PCL-triol）。为了制造 Janus 多孔复合材料，通过阶跃生长聚合法将凝胶乳液与聚[（苯基异氰酸酯）-共聚甲醛]重叠并固化。由此得到的 GO/PCL Janus 多孔复合材料呈现出不对称的双层结构，界面紧密结合。GO/PCL Janus 多孔复合材料具有不对称的表面润湿性，可作为液体二极管发挥作用，并能有效分离水包油（O/W）小型乳液。在模拟的 1.2 太阳辐照下，分离效率保持在 95% 以上，通量增加到无太阳辐照时的近四倍。此外，獐牙菜多孔复合材料还具有出色的重复使用性，在分离乳化油十次后仍能保持功效。这些 Janus 多孔复合材料在油水分离方面表现出色，是此类应用的理想候选材料。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.