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| 超疏水/超亲油铜网表面的一步法制备及其油水分离应用 |
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张东光1,2, 李陵汉1, 吴亚丽1,3, 王佳鹏3, 李冰4, 孙桓五1,5
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1.太原理工大学 机械与运载工程学院, 太原 030024;2.太原重型机械集团有限公司 矿山采掘装备及智能制造国家重点实验室, 太原 030024;3.太原理工大学 应用力学研究所, 太原 030024;4.大同煤矿集团有限公司 同家梁矿业有限责任公司, 大同 037025;5.煤炭资源开采利用与装备工程国家级实验教学示范中心, 太原 030024
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| 摘要: |
| 以紫铜网为基体材料，通过阳极氧化一步法，制备了超疏水/超亲油铜网表面，利用热场发射电子显微镜、X射线光电子能谱分析仪、接触角测量仪和万能力学测试机对表面的微观结构，化学成分，润湿性和剥离强度进行表征。结果表明：当阳极氧化电压为10 V时，表面具有明显的微/纳二元粗糙结构，化学成分为豆蔻酸铜；表面上水滴接触角为153°±2.3°，且水滴在表面上的受到的粘附力极低，滚动角为7.5°，油滴接触角为0°；豆蔻酸铜牢固地附着在铜网上，表面具有良好的机械稳定性。油水分离试验表明，制备的超疏水/超亲油铜网对不同种类的油水混合液具有很好的分离效果，分离效率均达到96%以上；经过10次循环试验后，对煤油/水混合液的分离效率仍可达到90%以上，具有良好的可循环使用性。 |
| 关键词: 一步法 超疏水 超亲油 油水分离 |
| DOI：10.11933/j.issn.1007-9289.20180806001 |
| 分类号:TG174.451;O647.5 |
| 基金项目:国家自然科学基金（51805356）；山西省自然科学基金（201701D12111209）；山西省研究生创新项目（2018SY018） |
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| Preparation of Superhydrophobic and Superoleophilic Surface on Cu Mesh by One-step Method and Its Application in Oil-Water Separation |
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ZHANG Dongguang1,2, LI Linghan1, WU Yali1,3, WANG Jiapeng3, LI Bing4, SUN Huanwu1,5
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1.College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China;2.State Key Laboratory of Mining Equipment and Intelligent Manufacturing, Taiyuan Heavy Machinery Group Co., Ltd., Taiyuan 030024, China;3.Institute of Applied Mechanics, Taiyuan University of Technology, Taiyuan 030024, China;4.Tongjialiang Mine Co., Ltd., Datong Coal Mine Group Co., Ltd., Datong 037025, China;5.National Demonstration Center for Experimental Coal Resource and Mining Equipments Education, Taiyuan 030024, China
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| Abstract: |
| A superhydrophobic and superoleophilic surface was prepared via one-step anodization method. The micro-morphology and chemical composition was characterized by the thermal field emission electron microscope and X ray photoelectron spectroscopy analyzer. The wettability was tested by contact angle meter, and the peel strength was measured by mechanical testing machine. The results show that micro/nano binary roughness covered by copper myristate is generated when the optimized anodization voltage is 10 V. The water contact angle and water sliding angle of the prepared surface are 153.0°±2.3° and 7.5°, respectively. The adhesion of the water droplet on the surface is very low, and the oil contact angle is 0°. Copper myristate is firmly attached to the surface, and the surface exhibits good mechanical stability. The oil-water test shows that the prepared surface can separate several kinds of oil/water mixture efficiency and the separation efficiency could exceed 96%. Even after 10 cycles, more than 90% kerosene can be separated from the kerosene/water mixture, demonstrating that the prepared surface has good recyclability. |
| Key words: one-step method superhydrophobic superoleophilic oil-water separation |