超疏水铜网的制备及其在油水分离中的应用
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摘要
将铜网浸渍于一定浓度的氯化铜和硫代硫酸钠的混合液中反应一定时间,从而在铜网表面构筑了微米级颗粒粗糙表面,并用一定浓度的正十二硫醇对其进行疏水修饰,制备出了具有超疏水特性的铜网。并探讨了浸渍温度、浸渍时间、浸渍液配比、修饰浓度、修饰时间对铜网疏水性的影响。在浸渍温度50℃,浸渍时间4h,浸渍液配比1∶1,修饰浓度10mmol/L,修饰时间10min的条件下得到了疏水性最好的铜网。用扫描电子显微镜、X射线粉末衍射仪、接触角测量仪对所制备的铜网表面形貌、化学组成、疏水性能进行了表征,并用4种油水混合物探究了所制备铜网的分离效果。结果表明,所制备的铜网具有超疏水性,接触角可达154°,并且成功应用于不同油水混合物的分离,分离效率均在96%以上。
The copper mesh was immersed in a mixed solution of copper chloride and sodium thiosulfate to construct micro-particle rough surface and the micro-particle rough surface was hydrophobically modified with 1-dodecanethiol(HS(CH2)11 CH3)to prepare a superhydrophobic copper mesh.The effects of immersion temperature,immersion time,ratio of immersion liquid,concentration of modification,and modification time on the hydrophobicity of copper mesh were discussed.When immersion temperature is 50℃,immersion time was 4 h,immersion solution ratio was 1∶1,modification concentration was 10 mmol/L and modification time was 10 min,the best hydrophobic copper mesh was obtained.The surface morphology,surface chemical composition and wetting behavior were characterized by SEM,XRD and contact angle measurement.The application of the copper mesh in the separation of oil and water was also discussed by using four kinds of oil-water mixtures.The results show that the prepared copper mesh exhibited superhydrophobicity with water contact angle of about154°,and had been successfully applied to the separation of different oil-water mixtures with the separation efficiency above 96%.
The copper mesh was immersed in a mixed solution of copper chloride and sodium thiosulfate to construct micro-particle rough surface and the micro-particle rough surface was hydrophobically modified with 1-dodecanethiol(HS(CH2)11 CH3)to prepare a superhydrophobic copper mesh.The effects of immersion temperature,immersion time,ratio of immersion liquid,concentration of modification,and modification time on the hydrophobicity of copper mesh were discussed.When immersion temperature is 50℃,immersion time was 4 h,immersion solution ratio was 1∶1,modification concentration was 10 mmol/L and modification time was 10 min,the best hydrophobic copper mesh was obtained.The surface morphology,surface chemical composition and wetting behavior were characterized by SEM,XRD and contact angle measurement.The application of the copper mesh in the separation of oil and water was also discussed by using four kinds of oil-water mixtures.The results show that the prepared copper mesh exhibited superhydrophobicity with water contact angle of about154°,and had been successfully applied to the separation of different oil-water mixtures with the separation efficiency above 96%.
引文
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[19] Kong Linghao,Chen Xinhua,Zhang Pingyu.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).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.
[2] Zhang Yi,Yu Ting,Bi Yonghui,et al.Research progress of treating oily wastewater[J].Chemical Industry and Engineering Progress,2008,27(8):1155-1161(in Chinese).张翼,于婷,毕永慧,等.含油废水处理方法研究进展[J].化工进展,2008,27(8):1155-1161.
[3] Hao Mengzhong.Treatment status and development trend of oily wastewater[J].Science and Technology Innovation Herald,2017,14(29):132-134(in Chinese).郝孟忠.含油废水处理现状及发展趋势[J].科技创新导报,2017,14(29):132-134.
[4] Lei Gangxing.Progress of oil-bearing wastewater treatment technology[J].Environmental Research and Monitoring,2017,30(1):58-62(in Chinese).雷岗星.含油废水处理技术的研究进展[J].环境研究与检测,2017,30(1):58-62.
[5] IsLam M A,Latif S A,Hossain S M,et al.Energy sources,part A:recovery,utilization and environmental effects[J].Energy Sources Part A,2011,33(5):392-400.
[6] Zhang J H,Gao X F,Jiang L.Application of superhydrophobic edge effects in solving the liquid outflow phenomena[J].Langmuir,2007,23(6):3230-3235.
[7] Zhang Jiaheng,Su Pengcheng,Xu Xiaolu,et al.Research and application of superhydrophobic materials in oil-water separation[J].Zhejiang Chemical Industry,2017,48(9):41-44(in Chinese).张家恒,苏鹏程,许晓璐,等.超疏水材料在油水分离领域的研究应用[J].浙江化工,2017,48(9):41-44.
[8] Zhang Liang,Zhao Ning,Xu Jian.Surfaces with special wettability:applications in oil/water separation[J].Chinese Science Bulletin,2013,58(33):3372-3380(in Chinese).张靓,赵宁,徐坚.特殊浸润性表面在油水分离中的应用[J].科学通报,2013,58(33):3372-3380.
[9] Feng L,Zhang Z Y,Mai Z H,et al.A super-hydrophobic and super-oleophilic coating mesh film for the separation of oil and water[J].Angewandte Chemie,2010,43(15):2012-2014.
[10] Jiang L,Zhang W B,Shi Z,et al.Superhydrophobic and superoleophilic PVDF membranes for effective separation of water-in-oil emulsions with high flux[J].Advanced Materials,2013,25(14):2071-2076.
[11] Cao M,Luo X M,Ren H J,et al.Hot water-repellent and mechanically durable superhydrophobic mesh for oil/water separation[J].Journal of Colloid and Interface Science,2018,512(15):567-574.
[12] Wang Q J,Cui Z,Xiao Y,et al.Stable highly hydrophobic and oleophilic meshes for oil-water separation[J].Applied Surface Science,2007,253(23):9054-9060.
[13] Shi Y L,Yang W,Feng X J,et al.Fabrication of superhydrophobic-superoleophilic copper mesh via thermal oxidation and its application in oil-water separation[J].Applied Surface Science,2016,367:493-499.
[14] Song Y,Liu Y,Zhan B,et al.Fabrication of bioinspired structured superhydrophobic and superoleophilic copper mesh for efficient oil-water separation[J].Journal of Bionic Engineering,2017,14(3):497-505.
[15] Zhu Y Z,Zhang F,Wang D,et al.A novel zwitterionic polyelectrolyte grafted PVDF membrane for thoroughly separating oil from water with ultrahigh efficiency[J].Journal of Materials Chemistry A,2013,1(18):5758-5765.
[16] Xu Z,Wang L,Yu C M,et al.In situ separation of chemical reaction systems based on a special wettable PTFE membrane[J].Advanced Functional Materials,2017,28(5):1-7.
[17] Xie Qingwei,Quan Xuejun,Li Ruiheng,et al.Review on preparation of superhydrophobic metal mesh and its application in oil-water separation[J].Journal of Chongqing University of Technology(Natural Science),2017(6):99-106(in Chinese).谢清伟,全学军,李瑞恒,等.超疏水金属网膜的制备及油水分离应用进展[J].重庆理工大学学报(自然科学),2017(6):99-106.
[18] Hou Keke,Chen Xinhua,Zhang Wanqiang,et al.Lowcost fabrication of super-hydrophobic copper mesh and its application in oil/water separation[J].Modern Chemical Industry,2017,37(2):137-142(in Chinese).侯珂珂,陈新华,张万强,等.超疏水铜网的低成本制备及油水分离应用研究[J].现代化工,2017,37(2):137-142.
[19] Kong Linghao,Chen Xinhua,Zhang Pingyu.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).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.