水下超疏油铜网的制备及其油水分离应用研究
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摘要
以铜网为基底,采用一步氧化法成功制备了水下超疏油铜网,其对油的接触角可达160°,滚动角为4°.利用扫描电子显微镜(SEM)、X射线粉末衍射仪(XRD)、接触角测试仪等对制备出的铜网表面的形貌、化学组成与浸润性等进行了表征与分析,并探讨了超疏油铜网的疏油机制、疏油性影响因素及其在油水分离中的应用.结果表明:经氧化所构筑的无定向微纳米氢氧化铜针状结构增加了铜网表面的粗糙度,氧化液浓度及铜网孔径的大小对水下疏油效果影响显著,油水分离效率受到不同水环境及油水体积比的影响,分离效率可达94%.
The underwater superoleophobic copper net was successfully prepared on copper mesh by one-step oxidation method.The contact angle of oil can reach 160°and the roll angle can reach 4°.The phase structure,surface morphology and infiltyation of the samples were characterized by XRD,TEM and contact angle measurement.Then,the formation mechanism,the influence factor of the oleophobicity and the application in the separation of oil/water were discussed.The experiment results showed that the micro-nanoscale structures obtained by oxidation method could increase the surface roughness of copper mesh.The concentration of oxidation liquid and the pore size of copper mesh had a significant effect on the oleophobicity,and the separation efficiency which could reach the value of 94% was affected by different water environment and oil/water ratio.
The underwater superoleophobic copper net was successfully prepared on copper mesh by one-step oxidation method.The contact angle of oil can reach 160°and the roll angle can reach 4°.The phase structure,surface morphology and infiltyation of the samples were characterized by XRD,TEM and contact angle measurement.Then,the formation mechanism,the influence factor of the oleophobicity and the application in the separation of oil/water were discussed.The experiment results showed that the micro-nanoscale structures obtained by oxidation method could increase the surface roughness of copper mesh.The concentration of oxidation liquid and the pore size of copper mesh had a significant effect on the oleophobicity,and the separation efficiency which could reach the value of 94% was affected by different water environment and oil/water ratio.
引文
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[4]胡晓林,刘红兵.几种油水分离技术介绍[J].热力发电,2008,37(3):91-92.HU Xiaolin,LIU Hongbing.Presentation of several technologies for oil and water separation[J].Thermal Power Generation,2008,37(3):91-92.
[5]FENG Lin,ZHANG Zhongyi,MAI Zhenhong,et al.A super-hydrophobic and super-oleophilic coating mesh film for the separation of oil and water[J].Angewandte Chemie(International ed in English),2004,43(15):2012-2014.
[6]WANG Fajun,YU Shijin,XUE M,et al.A superhydrophobic and superoleophilic miniature mesh box for oil spill clean up[J].New Journal of Chemistry,2014,38(9):4388-4393.
[7]徐向军,邢晓轲,卫世乾.电化学辅助制备锌基超疏水表面[J].信阳师范学院学报(自然科学版),2016,29(1):92-95.XU Xiangjun,XING Xiaoke,WEI Shiqian.Electrochemically assisted construction of superhydrophobic surface on Zinc substrate[J].Journal of Xinyang Normal University(Natural Science Edition),2016,29(1):92-95.
[8]XUE Zhongxin,WANG Shutao,LIN Ling,et al.A novel superhydrophilic and underwater superoleophobic hydrogel-coated mesh for oil/water separation[J].Advanced Materials(Deerfield Beach Fla),2011,23(37):4270-4273.
[9]CHEN Pengcheng,XU Zhikang.Mineral-coated polymer membranes with superhydrophilicity and underwater superoleophobicity for effective oil/water separation[J].Scientific Reports,2013,3(6153):2776.
[10]高虹,段月琴,袁志好.超亲水-水下超疏油PVDF-g-PAA多孔膜的制备及油水分离性能[J].高等学校化学学报,2016,37(6):1208-1215.GAO Hong,DUAN Yueqin,YUAN Zhihao.Preparation of superhydrophilic and underwater superoleophobic PVDF-g-PAA porous membranes and their oil-water separation performance[J].Chemical Journal of Chinese Universities,2016,37(6):1208-1215.
[11]卜祥玮.超疏水超亲油滤网的制备与应用研究[D].大连:大连理工大学,2013.BU Xiangwei.Fabricationand applied research of super hydrophobic and super oleophylic strainer mesh[D].Dalian:Dalian University of Technology,2013.
[12]张云龙.ZnO纳米材料的疏水性调控及其在油水分离中的应用研[D].济南:山东大学,2014.ZHANG Yunlong.The investigation on the tunable hydrophobicity and application for oil/water seperation of Zno nanomaterial[D].Jinan:Shandong University,2014.
[13]杨洋洋,丁忠伟,刘丽英.超疏水/超亲油膜的制备及其油水分离性能[J].北京化工大学学报(自然科学版),2013,40(S1):21-25.YANG Yangyang,DING Zhongwei,LIU Liying.Fabrication of super-hydrophobic and super-oleophlic membranes and their separation of oil-water mixture[J].Journal of Beijing University of Chemical Technology(Natural Science Edition),2013,40(S1):21-25.