The pressing-induced formation of a large-area supramolecular film for oil capture
The pressing-induced formation of a large-area supramolecular film for oil capture
复制标题
压力诱导形成大面积超分子膜用于捕油
DOI：
10.1039/d0qm00006j
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发表时间：
2020-05
影响因子：
7
通讯作者：
Yun Yan
中科院分区：
文献类型：
--
作者：
Wenkai Wang;Mengqi Xie;Hongjun Jin;Wanwan Zhi;Kaerdun Liu;Cheng Ma;Peilong Liao;Jianbin Huang;Yun Yan
从各种水体中快速有效地捕获石油的能力对于环境考虑非常重要。在这里，我们报告了一种超分子膜，表现出快速的油吸附，特别是在几分钟内，与此膜制作通过进行压制的沉淀物形成的市售的聚（4-苯乙烯磺酸钠）（PSS）和带相反电荷的二甲基双十四烷基溴化铵（DTTAB）。在机械压力下，发现DTTAB分子形成大的层状中间相，其尺寸与可见光的波长相当。这些中间相通过PSS链进一步静电连接到本体膜中。由于“物以类聚”的原理，油可以被膜中的疏水中间相捕获。这种效果，是独立的孔隙大小，提供了在几分钟内完全吸附的石油在水样品从稀水到盐水。在此采用解吸工艺进行采油，解吸膜可重复使用。此外，膜在被损坏后在机械压力下再生。大规模制造的膜被证明是可能的，使用家用面条机。所有这些特征使本发明的膜成为可扩展到未来工业生产的有竞争力的油吸附材料。
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.
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DOI：
10.1038/newbio230072a0
发表时间：
1971-03
期刊：
Nature: New biology
影响因子：
--
作者：
M. Wilkins;A. Blaurock;D. Engelman;D. Engelman
通讯作者：
M. Wilkins;A. Blaurock;D. Engelman;D. Engelman
影响因子：
13.3
作者：
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通讯作者：
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影响因子：
4.6
作者：
Luo Y;Jiang S;Xiao Q;Chen C;Li B
通讯作者：
Li B
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影响因子：
3.3
作者：
Yan, Yun;Xiong, Wei;Fu, Honglan
通讯作者：
Fu, Honglan
影响因子：
4.9
作者：
Sohn, Kwonnam;Na, Yoon Joo;Huang, Jiaxing
通讯作者：
Huang, Jiaxing