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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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。
A superhydrophobic and superoleophilic surface was prepared via one-step anodization method. The micromorphology 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 are153.0°±2.3° and 7.5o, respectively. The adhesion of the water droplet on the surface is very low, and the oil contact angle is 0o.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 exceed96%. Even after 10 cycles, more than 90% kerosene can be separated from the kerosene/water mixture, demonstrating that the prepared surface has good recyclability.
A superhydrophobic and superoleophilic surface was prepared via one-step anodization method. The micromorphology 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 are153.0°±2.3° and 7.5o, respectively. The adhesion of the water droplet on the surface is very low, and the oil contact angle is 0o.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 exceed96%. Even after 10 cycles, more than 90% kerosene can be separated from the kerosene/water mixture, demonstrating that the prepared surface has good recyclability.
引文
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[13]ZHAO T,KANG Z.Simultaneously Fabricating multifunctional superhydrophobic/superoleophilic coatings by onestep electrodeposition method on cathodic and anodic magnesium surfaces[J].Journal of the Electrochemical Society,2016,163(10):D628-D635.
[14]范天博,姜宇,刘露萍,等.一步水热法合成六方片状氢氧化镁及其生长习性分析的研究[J].人工晶体学报,2017(12):2319-2325.FAN T B,JIANG Y,LIU L P,et al.Crystal growth habit of hexagonal flake magnesium hydroxide synthesized by onestep hydrothermal method[J].Journal of Synthetic Crystals,2017(12):2319-2325(in Chinese).
[15]孔令豪,陈新华,张平余.一步法制备磷铜网超疏水表面及其在油水分离中的应用[J].中国表面工程,2016,29(3):87-95.KONG L H,CHEN X H,ZHANG P Y.Fabrication of superhydrophobic phosphor-copper mesh via one-step method and application in oil-water separation[J].China Surface Engineering,2016,29(3):87-95(in Chinese).
[16]LIU Y,ZHANG K,SONG Y,et al.A smart switchable bioinspired copper foam responding to different pH droplets for reversible oil-water separation[J].Journal of Materials Chemistry A,2017,5(6):2603-2612.
[2]张佳星,马艳艳,周敏,等.油水分离技术进展[J].净水术,2017,36(12):50-54,61.ZHANG J X,MA Y Y,ZHOU M,et al.Advances in oil-water separation technologies[J].Water Purification Technology,2017,36(12):50-54,61(in Chinese).
[3]程千会,刘长松.用于油水分离的超疏水氧化锌海绵的制备及其性能[J].中国表面工程,2018,31(1):148-155.CHENG Q H,LIU C S.Fabrication and properties of superhydrophobic ZnO sponge for oil-water separation[J].China Surface Engineering,2018,31(1):148-155(in Chinese).
[4]李文涛,雍佳乐,杨青,等.基于特殊润湿性材料的油水分离[J].物理化学学报,2018,34(5):456-475.LI W T,YONG J L,YANG Q,et al.Oil-water separation based on the materials with special wettability[J].Acta Physico-Chimica Sinica,2018,34(5):456-475(in Chinese).
[5]LIU Y,ZHANG K,YAO W,et al.Bioinspired structured superhydrophobic and superoleophilic stainless steel mesh for efficient oil-water separation[J].Colloids&Surfaces APhysicochemical&Engineering Aspects,2016,500:54-63.
[6]司连喜,孔威,武志俊,等.特殊润湿性镍网的制备及其油水分离性能[J].太原理工大学学报,2018,49(2):190-195.SI L X,KONG W,HAN Z J,et al.Fabrication of special wetting nickel mesh for oil/water separation[J].Journal of Taiyuan University of Technology,2018,49(2):190-195(in Chinese).
[7]张容容,刘长松,杨亭亭.超亲水及水下超疏油铜网的制备及其油水分离性能的研究[J].表面技术,2017,46(5):202-208.ZHANG R R,LIU C S,YANG T T.Fabrication of superhydrophilic and underwater superoleophobic copper mesh and oil/water separation property[J].Surface Technology,2017,46(5):202-208(in Chinese).
[8]BOAKYEANSAH S,YONG T L,LEE H J,et al.Structurecontrollable superhydrophobic Cu meshes for effective separation of oils with different viscosities and aqueous pollutant purification[J].RSC Advances,2016,6(21):17642-17650.
[9]SINGH V,SHENG Y J,TSAO H K.Facile fabrication of superhydrophobic copper mesh for oil/water separation and theoretical principle for separation design[J].Journal of the Taiwan Institute of Chemical Engineers,2018,87:150-157.
[10]钱志强,吴志坚,王世栋,等.镁合金超疏水表面的制备技术与应用研究进展[J].材料导报,2018,32(1):102-109.QIAN Z Q,WU Z J,WANG S D,et al.Research progress in preparation of superhydrophobic coatings on magnesium alloys and its application[J].Materials Review,2018,32(1):102-109(in Chinese).
[11]李文涛,雍佳乐,杨青,等.基于特殊润湿性材料的油水分离[J].物理化学学报,2018,34(5):456-475.LI W T,YONG J L,YANG Q,et al.Oil-water separation based on the materials with special wettability[J].Acta Physico-Chimica Sinica,2018,34(5):456-475(in Chinese).
[12]李陵汉,张东光,吴亚丽,等.基于分形理论的疏水功能表面润湿性分析[J].中国表面工程,2018,31(2):1-7.LI L H,ZHANG D G,WU Y L et al.Analysis on wettability of hydrophobic functional surface based on fractal theory[J].China Surface Engineering,2018,31(2):1-7(in Chinese).
[13]ZHAO T,KANG Z.Simultaneously Fabricating multifunctional superhydrophobic/superoleophilic coatings by onestep electrodeposition method on cathodic and anodic magnesium surfaces[J].Journal of the Electrochemical Society,2016,163(10):D628-D635.
[14]范天博,姜宇,刘露萍,等.一步水热法合成六方片状氢氧化镁及其生长习性分析的研究[J].人工晶体学报,2017(12):2319-2325.FAN T B,JIANG Y,LIU L P,et al.Crystal growth habit of hexagonal flake magnesium hydroxide synthesized by onestep hydrothermal method[J].Journal of Synthetic Crystals,2017(12):2319-2325(in Chinese).
[15]孔令豪,陈新华,张平余.一步法制备磷铜网超疏水表面及其在油水分离中的应用[J].中国表面工程,2016,29(3):87-95.KONG L H,CHEN X H,ZHANG P Y.Fabrication of superhydrophobic phosphor-copper mesh via one-step method and application in oil-water separation[J].China Surface Engineering,2016,29(3):87-95(in Chinese).
[16]LIU Y,ZHANG K,SONG Y,et al.A smart switchable bioinspired copper foam responding to different pH droplets for reversible oil-water separation[J].Journal of Materials Chemistry A,2017,5(6):2603-2612.