| 摘要: |
| 针对目前超疏水超亲油表面制备工艺复杂、成本高等问题，采用工艺简单、可控性强的电化学沉积法制备出不锈钢网基底超疏水超亲油表面。通过在不锈钢网表面进行铜镍共沉积，得到一种叶片状的微纳米级粗糙结构，再利用正十二硫醇乙醇溶液对镀层进行表面修饰，最终获得超疏水超亲油Cu-Ni复合镀层。利用扫描电子显微镜（SEM）、接触角测试仪、X射线能谱仪（EDS）、傅里叶变换红外光谱仪（FT-IR）等对镀层表面微观形貌、浸润性以及化学元素组成进行表征分析。结果显示，制备的Cu-Ni复合镀层水接触角为155°±2°，油接触角为0°。对润滑油油水分离效率高达98%，且连续分离2 h后，分离效率仍高于95%，表现出稳定高效的油水分离性能。该制备方法耗时短、成本低，有潜力应用于规模化工业生产。 |
| 关键词: 电化学沉积 正十二硫醇 超疏水 超亲油 |
| DOI：10.11933/j.issn.1007-9289.20170623002 |
| 分类号: |
| 基金项目:四川省科学技术厅资助项目（2017JZ0021，2017SZ0039）；四川省教育厅资助项目（17ZA0298）；国家级大学生创新创业训练计划（201610626027） |
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| Preparation of Superhydrophobic and Superoleophilic Cu-Ni Composite Coatings and Application in Oil-Water Separation |
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JIANG Mei-hui-zi1, LUO Fang1, XIANG Mei-su1, ZHANG Yan-zong1,2
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1.College of Environment, Sichuan Agricultural University, Chengdu 611130;2.Agricultural Environmental Engineering Center of Sichuan Province, Chengdu 611130
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| Abstract: |
| Aiming at problems of the complex preparation process and high cost for superhydrophobic and superoleophilic materials, an electrodeposition method was performed to fabricate a superhydrophobic and superoleophilic surface on stainless steel mesh through a straightforward process. First, a rough surface composed of leaf-like microstructure was obtained by co-deposition of copper and nickel on stainless steel mesh. Then, the superhydrophobic and superoleophilic Cu-Ni composite coating was prepared after the immersion process in N-dodecyl mercaptan ethanol solution. The morphology and elemental analysis of the prepared micro-nano composite coating were characterized using scanning electron microscopy (SEM), contact angle measurement, energy dispersive X-ray spectroscopy (EDS) and infrared spectroscopic analysis (FTIR). The results show that the water contact angle and the oil contact angle of the as-prepared Cu-Ni composite coating are 155°±2° and 0°, respectively. This superhydrophobic and superoleophilic Cu-Ni composite coating has an excellent oil/water separation performance for the lubricant oil. The separation efficiency can reach 98%. After 2 h continuous separation, the separation efficiency still reaches 95%. The preparation process is time-saving and low-cost, which has a great potential for large-scale industrial production. |
| Key words: electrodeposition N-dodecyl mercaptan superhydrophobic superoleophilic |
