Guo Hongshuang, Yang Jing, Xu Tong, Zhao Weiqiang, Zhang Jiamin, Zhu Yingnan, Wen Chiyu, Li Qingsi, Sui Xiaojie, Zhang Lei
Qingdao Institute for Marine Technology of Tianjin University , Qingdao 266235 , P.R. China.
ACS Appl Mater Interfaces. 2019 Apr 10;11(14):13704-13713. doi: 10.1021/acsami.9b01108. Epub 2019 Apr 1.
PDMS-based materials have been extensively studied in oil-water separation. However, their successful application is commonly limited by low efficiency, vulnerability to acid/alkali, complex processing procedures, incapability for emulsion separation, etc. Here, a highly durable and robust separation material is developed by coating PDMS-based copolymers on cotton textiles with a facile sol-gel approach. Solely driven by gravity, this new material not only can enable effective separation of oil-water mixture with a flux as high as ∼7500 L m h but also can separate surfactant-stabilized water-in-oil emulsion. Moreover, it remains fully functional even in the environments with high concentrations of acid, alkali, or salt. This novel and versatile strategy holds great promise to be widely used in practical applications of oil-water separation, including oil/chemical spill accidents and industrial sewage emission.
基于聚二甲基硅氧烷（PDMS）的材料在油水分离方面已得到广泛研究。然而，它们的成功应用通常受到效率低、易受酸碱侵蚀、加工工艺复杂、无法分离乳液等限制。在此，通过一种简便的溶胶 - 凝胶法在棉织物上涂覆基于PDMS的共聚物，开发出一种高度耐用且坚固的分离材料。仅在重力驱动下，这种新材料不仅能够以高达约7500 L m⁻² h⁻¹的通量有效分离油水混合物，还能分离表面活性剂稳定的油包水乳液。此外，即使在高浓度酸、碱或盐的环境中，它仍能保持全部功能。这种新颖且通用的策略在油水分离的实际应用中具有广阔的应用前景，包括油/化学品泄漏事故和工业污水排放。
