Mussel-Inspired Chemistry and Michael Addition Reaction for Efficient Oil/Water Separation
Mussel-Inspired Chemistry and Michael Addition Reaction for Efficient Oil/Water Separation
复制标题
受贻贝启发的化学和迈克尔加成反应可实现高效油/水分离
DOI：
10.1021/am4008598
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发表时间：
2013-05-22
影响因子：
9.5
通讯作者：
Wei, Yen
中科院分区：
文献类型：
--
作者：
Cao, Yingze;Zhang, Xiaoyong;Wei, Yen
将贻贝启发化学与迈克尔加成反应相结合，成功研制了一种具有高分离效率和水侵入压力的油水分离网。首先通过简单地浸入pH为8.5的多巴胺水溶液中，用粘合剂聚多巴胺（PDA）膜涂覆不锈钢网的基底。然后在室温下通过Michael加成反应将正十二烷基胍（NDM）与PDA膜偶联。所制备的网状物表现出高度疏水性，水接触角为144度，超亲油性，油接触角为0度。可用于汽油、柴油等一系列油水混合物的分离，使用30次后，分离效率仍很高（己烷/水混合物为99.95%）。更重要的是，相对高的侵入压力（2.2kPa）提供了分离大量油和水混合物的机会。该研究提供了一个新的前景，只需在粘合剂PDA基网片上引入多个分子，即可获得各种功能性油/水分离材料。
An oil/water separation mesh with high separation efficiency and intrusion pressure of water has been successfully developed by combining mussel inspired chemistry and Michael addition reaction. The substrate of the stainless steel mesh was first coated with the adhesive polydopamine (PDA) film by simple immersion in an aqueous solution of dopamine at pH of 8.5. Then n-dodecyl mercaptan (NDM) was conjugated with PDA film through Michael addition reaction at ambient temperature. The as-prepared mesh showed highly hydrophobicity with the water contact angle of 144 degrees and superoleophilicity with the oil contact angle of 0 degrees. It can be used to separate a series of oil/water mixtures like gasoline, diesel, etc. The separation efficiency remains high after 30 times use (99.95% for hexane/water mixture). More importantly, the relatively high intrusion pressure (2.2 kPa) gives the opportunity to separation of large amount of oil and water mixtures. This study provides a new prospect to simply introduce multiple molecules on the adhesive PDA-based mesh to achieve various functional oil/water separation materials.