In this paper, a simple, environmentally friendly, fluorine-free, economical and effective hydrophobic modification method for melamine sponge (MS) with cobalt oxyhydroxide (CoOOH) and stearic acid (STA) was developed. The 3D pine needle-like hierarchical micro-nanostructure CoOOH coated onto the framework of MS as superhydrophobic materials were successfully constructed and synthesized by low temperature hydrothermal method. By combining the high porosity, superior elasticity, and mechanical stability of the MS with the nanometer scale roughness of CoOOH and low surface energy of STA, the modified CoOOH@STA@MS not only has superhydrophobic surface with the water contact angle of 155°, but also shows outstanding adsorption performance towards the various organic solvents/oils (absorption weight ranging from 20 to 50 times of its own) and excellent recyclability. Additionally, the modified MS can be used as an efficient oil pollutant removal equipment for continuous oil-water separation with the help of peristaltic pump. Furthermore, the CoOOH@STA@MS could be able to separate immiscible oil-water mixture as well as surfactant-stabilized water-in-oil emulsions. All the advantages indicate that the superhydrophobic sponge is the ideal material for oil spills treatment and environmental control.

本文开发了一种简单、环保、无氟、经济、有效的三聚氰胺海绵（MS）疏水改性方法，羟基氧化钴（CoOOH）和硬脂酸（STA）。通过低温水热法成功构建并合成了作为超疏水材料包覆在MS框架上的3D松针状分级微纳米结构CoOOH。通过将 MS 的高孔隙率、优异的弹性和机械稳定性与 CoOOH 的纳米级粗糙度和 STA 的低表面能相结合，改性 CoOOH@STA@MS 不仅具有 155° 的水接触角的超疏水表面，同时对各种有机溶剂/油类表现出优异的吸附性能（吸附重量为自身的20至50倍）和优异的可回收性。此外，改进后的 MS 可作为一种高效的油污染物去除设备，在蠕动泵的帮助下进行连续油水分离。此外，CoOOH@STA@MS 能够分离不混溶的油水混合物以及表面活性剂稳定的油包水乳液。所有这些优点表明，超疏水海绵是溢油处理和环境控制的理想材料。CoOOH@STA@MS 能够分离不混溶的油水混合物以及表面活性剂稳定的油包水乳液。所有这些优点表明，超疏水海绵是溢油处理和环境控制的理想材料。CoOOH@STA@MS 能够分离不混溶的油水混合物以及表面活性剂稳定的油包水乳液。所有这些优点表明，超疏水海绵是溢油处理和环境控制的理想材料。