Fabrication of water-repellent double-layered polydopamine/copper films on mesh with improved abrasion and corrosion resistance by solution-phase reduction for oily wastewater treatment
Fabrication of water-repellent double-layered polydopamine/copper films on mesh with improved abrasion and corrosion resistance by solution-phase reduction for oily wastewater treatment
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通过溶液相还原制备疏水双层聚多巴胺/铜膜，提高耐磨性和耐腐蚀性，用于含油废水处理
DOI：
10.1016/j.seppur.2019.116005
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发表时间：
2020-02
影响因子：
8.6
通讯作者：
Shuyu Liu
中科院分区：
文献类型：
--
作者：
Jintao Wang;Shuyu Liu
近年来，超疏水金属网过滤含油废水得到了广泛的报道。然而，一种简便和通用的技术，更容易操作，以构建坚固的超疏水不锈钢(SS)网来处理石油污染的水仍然是一个挑战。本论文主要基于原位生长法制备了具有稳定多巴胺(PDA)-铜纳米团簇(CNS)络合物的超疏水SS网状结构。所制备的丝网能够抵抗各种有机溶剂、腐蚀性溶液和强烈的机械磨损。适用于各种油污水的净化，过滤效率高达96.6%。分离效率(>；97.2%)和水接触角(>；155.5°)在分离40次后仍保持很高的水平。此外，还系统地考察了Cu2+浓度对分离效率和油膜渗透通量的影响。这项研究提供了一种新的技术来制备耐用和坚固的超疏水网状物，以便高效、快速地从水中分离油。
Recently, superhydrophobic metal meshes for oily wastewater filtration have been widely reported. However, a facile and universal technique with easier operations to construct robustly superhydrophobic stainless steel (SS) mesh for dealing with oil-polluted water is still a challenge. Herein, a superhydrophobic SS mesh with stable polydopamine (PDA)-Cu nanoclusters (CNs) complexes was fabricated mainly on the basis of in situ growth approach. The as-prepared mesh is able to resist various organic solvents, corrosive solutions and strongly mechanical abrasion. It can be applied to purify water polluted by various types of oils with filtration efficiency as high as 96.6%. The separation efficiency (>97.2%) and water contact angle (>155.5°) remain very high even after 40 cycles of separation. Furthermore, the influence of the Cu2+concentration on separation efficiency and oil permeation flux is also systematically investigated. This study gives a new technique to prepare durable and robustly superhydrophobic mesh for efficient and quick separation of the oils from water.
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影响因子：
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