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The pressing-induced formation of a large-area supramolecular film for oil capture
Materials Chemistry Frontiers ( IF 7 ) Pub Date : 2020-03-27 , DOI: 10.1039/d0qm00006j Wenkai Wang 1, 2, 3, 4, 5 , Mengqi Xie 1, 2, 3, 4, 5 , Hongjun Jin 1, 2, 3, 4, 5 , Wanwan Zhi 1, 2, 3, 4, 5 , Kaerdun Liu 1, 2, 3, 4, 5 , Cheng Ma 1, 2, 3, 4, 5 , Peilong Liao 1, 2, 3, 4, 5 , Jianbin Huang 1, 2, 3, 4, 5 , Yun Yan 1, 2, 3, 4, 5
Materials Chemistry Frontiers ( IF 7 ) Pub Date : 2020-03-27 , DOI: 10.1039/d0qm00006j Wenkai Wang 1, 2, 3, 4, 5 , Mengqi Xie 1, 2, 3, 4, 5 , Hongjun Jin 1, 2, 3, 4, 5 , Wanwan Zhi 1, 2, 3, 4, 5 , Kaerdun Liu 1, 2, 3, 4, 5 , Cheng Ma 1, 2, 3, 4, 5 , Peilong Liao 1, 2, 3, 4, 5 , Jianbin Huang 1, 2, 3, 4, 5 , Yun Yan 1, 2, 3, 4, 5
Affiliation
The ability to quickly and efficiently capture oil from diverse bodies of water is very important for environmental considerations. Here, we report a supramolecular film that displayed quick oil adsorption, specifically within minutes, with this film fabricated by carrying out a pressing of precipitates formed from commercially available poly(sodium 4-styrenesulfonate) (PSS) and oppositely charged dimethylditetradecylammonium bromide (DTTAB). Under mechanical pressure, the DTTAB molecules were found to form large lamellar mesophases with sizes comparable to the wavelength of visible light. These mesophases were further connected electrostatically via PSS chains into the bulk film. Oils could be captured by the hydrophobic mesophases in the film owing to the effect of the “like likes like” principle. This effect, being independent of pore size, afforded the complete adsorption of oil within minutes in water samples ranging from dilute water to saline water. Oil recovery was carried out here using a desorption process, and the desorbed film could be reused. Furthermore, the film was regenerated under mechanical pressure after being damaged. Mass-scale fabrication of the film was shown to be possible using a household noodle machine. All these features make the present film a competitive oil adsorption material that can be extended to future industrial production.
中文翻译:
压力诱导形成的大面积超分子油膜捕获
对于环境方面的考虑,快速有效地从不同的水体中捕获油的能力非常重要。在这里,我们报道了一种超分子薄膜,该薄膜显示出快速的油吸附能力,特别是在几分钟内,这种薄膜是通过对由市售聚(4-苯乙烯磺酸钠)(PSS)和带相反电荷的二甲基二茂铁溴化铵(DTTAB)形成的沉淀物进行压制而成。在机械压力下,发现DTTAB分子形成大的层状中间相,其尺寸可与可见光的波长相媲美。这些中间相通过PSS链接到散装胶片中。由于“喜欢喜欢”原理的作用,油可以被膜中的疏水中间相捕获。这种作用与孔径无关,可在数分钟内在稀水到盐水中的水样中完全吸附油。在此使用解吸工艺进行油回收,并且解吸的膜可以重复使用。此外,膜在受损后在机械压力下再生。已证明使用家用面条机可以大规模制造该薄膜。所有这些特征使本发明的膜成为竞争性的吸油材料,可以扩展到未来的工业生产中。
更新日期:2020-03-27
中文翻译:
压力诱导形成的大面积超分子油膜捕获
对于环境方面的考虑,快速有效地从不同的水体中捕获油的能力非常重要。在这里,我们报道了一种超分子薄膜,该薄膜显示出快速的油吸附能力,特别是在几分钟内,这种薄膜是通过对由市售聚(4-苯乙烯磺酸钠)(PSS)和带相反电荷的二甲基二茂铁溴化铵(DTTAB)形成的沉淀物进行压制而成。在机械压力下,发现DTTAB分子形成大的层状中间相,其尺寸可与可见光的波长相媲美。这些中间相通过PSS链接到散装胶片中。由于“喜欢喜欢”原理的作用,油可以被膜中的疏水中间相捕获。这种作用与孔径无关,可在数分钟内在稀水到盐水中的水样中完全吸附油。在此使用解吸工艺进行油回收,并且解吸的膜可以重复使用。此外,膜在受损后在机械压力下再生。已证明使用家用面条机可以大规模制造该薄膜。所有这些特征使本发明的膜成为竞争性的吸油材料,可以扩展到未来的工业生产中。