•21•【表面技术/SurfaceTechnology】DOI:10.19289/j.1004-227x.2023.14.003超疏水金属基膜的制备及其在气隙式膜蒸馏中的应用唐浩铭1,2，孙国富1，潘高峰2,*，徐静莉1,**1.许昌学院化工与材料学院，河南许昌4610002.吉林化工学院石油化工学院，吉林吉林132022摘要：通过铜电沉积+原位氧化+化学修饰的方法在2000目不锈钢网基体上制备了超疏水不锈钢基膜(SH-SSM)，并应用于气隙式膜蒸馏(AGMD)。采用扫描电镜、接触角测量仪、X射线衍射仪和X射线能谱仪对所制备的疏水表面进行表征。探究了最佳的化学修饰条件及所制备的SH-SSM在气隙式膜蒸馏中的运行情况。结果表明，当正十二硫醇用量为2μL/cm2时能够制备出水接触角为164°、滚动角为1.7°的超疏水表面。SH-SSM在气隙式膜蒸馏组件处理30g/LNaCl溶液的过程中显示出良好的稳定性和耐用性，运行10h内的膜通量维持在4.5kg/(m2·h)左右，盐的截留率大于98.5%。关键词：气隙式膜蒸馏；不锈钢网；超疏水表面；铜电沉积；原位氧化；化学修饰；膜通量中图分类号：TQ028.8;TB333文献标志码：A文章编号：1004–227X(2023)14–0021–09Preparationofsuperhydrophobicmetal-basedmembraneanditsapplicationinair-gapmembranedistillationTANGHaoming1,2,SUNGuofu1,PANGaofeng2,*,XUJingli1,**1.CollegeofChemicalandMaterialsEngineering,XuchangUniversity,Xuchang461000,China2.SchoolofPetrochemicalEngineering,JilinInstituteofChemicalTechnology,Jilin132022,ChinaAbstract:Asuperhydrophobicstainlesssteelbasedmembrane(SH-SSM)waspreparedona2000-meshstainlesssteelsubstratebycopperelectrodeposition,in-situoxidation,andchemicalmodificationsuccessively,andthenappliedtoair-gapmembranedistillation(AGMD).Thehydrophobicsurfacepreparedwascharacterizedbyusingscanningelectronmicroscope,contactanglemeter,X-raydiffractometer,andenergy-dispersivespectrometer.TheoptimalconditionsforchemicalmodificationandtheAGMDprocesswithSH-SSMwerestudied.Theresultsshowedthatasuperhydrophobicsurfacewithacontactangleof164°andaslidingangleof1.7°againstwatercouldbepreparedwhenthedosageofn-dodecanethiolwas2μL/cm2.TheSH-SSMshowedgoodstabilityanddurabilityduringtheAGMDtestwitha30g/LNaClsolutionasfeed,andthemembranefluxwasmaintainedatabout4.5kg/(m2·h)andthesaltrejectio...
