Due to the high porosity and excellent absorption capacity, three-dimensional network bulk materials with hydrophobicity for clean-up oil-spill and organic solvents discharge have attracted significant interest and attention. Herein, this work presents a facile and low-cost method to fabricate highly-hydrophobic, mechanically flexible and dynamic copper nanoparticles coated commercial melamine sponge (Cu-NPs/MS) via one-step process without any hydrophobic modification. The as-prepared Cu-NPs/MS possesses high-hydrophobicity/superoleophilicity, high open-pore structure and great mechanical property which can be used for removal oil/solvents from water. The Cu-NPs/MS absorbent shows striking absorption capacities (60–145 g/g) at static state and admirable separation efficiencies (96.4–98.6%) as oil-collecting device under the pump driven at dynamic state. Moreover, the renewability of Cu-NPs/MS can be achieved via dissolving polluted and destroyed Cu-NPs coating, and redepositing dynamic Cu-NPs coating. This report shows high-performance Cu-NPs/MS absorbent is a promising practical application in clean-up oil-spill and pollution remediation.

由于高孔隙率和优异的吸收能力，具有疏水性的三维网状散装材料用于清除溢油和有机溶剂，引起了广泛的关注和关注。本文中，这项工作提出了一种简便且低成本的方法来制备高疏水性，机械柔性和动态铜纳米颗粒一步法涂覆的商用三聚氰胺海绵（Cu-NPs / MS），无需任何疏水改性。制备的Cu-NPs / MS具有高疏水性/超亲油性，高开孔结构和良好的机械性能，可用于从水中去除油/溶剂。作为动态状态下泵的集油装置，Cu-NPs / MS吸收剂在静态下表现出惊人的吸收能力（60–145 g / g），并且具有令人赞叹的分离效率（96.4–98.6％）。此外，可以通过溶解污染和破坏的Cu-NPs涂层并重新沉积动态Cu-NPs涂层来实现Cu-NPs / MS的可更新性。该报告表明，高性能Cu-NPs / MS吸收剂在清理溢油和污染修复方面是有希望的实际应用。