印染（2024No.2）yira.cbpt.cnki.net聚乙烯醇/ZIF-8复合膜的制备及吸附性能杨亮1，孔韩韩1，李韦霖1，孟存飞2，王琴2，张天芸1，王雪梅1，李文全3，吕庄元3æèççöø÷÷1.兰州理工大学机电工程学院，甘肃兰州730050；2.甘肃省金昌生态环境监测中心，甘肃金昌737100；3.兰州三毛实业有限公司，甘肃兰州730316摘要：通过溶液流延法制备了聚乙烯醇/ZIF-8复合膜，采用SEM、FT-IR、XRD、TGA、BET等对聚乙烯醇/ZIF-8复合膜进行表征，并探究了复合膜的水稳定性、机械性能，以及对刚果红（CR）的吸附性能。结果表明：聚乙烯醇与ZIF-8材料复合后能改善聚乙烯醇的热稳定性，增加膜表面粗糙度；吸附过程以化学吸附为主，通过内部扩散控制吸附速率，符合准二级吸附动力学模型和Langmuir吸附曲线；ZIF-8质量分数为10%时制备的聚乙烯醇/ZIF-8复合膜，在温度20℃、刚果红溶液质量浓度95mg/L时，对刚果红的最大吸附量达159.63mg/g，使用4次后仍能保持93%的吸附效率。关键词：聚乙烯醇；ZIF-8；复合膜；吸附中图分类号：TS199；TB383.2文献标志码：BDOI：10.3969/j.yinran.202312009Preparationandadsorptionperformanceofpolyvinylalcohol/ZIF-8compositefilmYANGLiang1,KONGHanhan1,LIWeilin1,MENGCunfei2,WANGQin2,ZHANGTianyun1,WANGXuemei1,LIWenquan3,LYUZhuangyuan3æèççöø÷÷1.SchoolofMechanicalandElectronicalEngineering,LanzhouUniversityofTechnology,Lanzhou730050,China;2.GansuProvinceJinchangEcologicalEnvironmentMonitoringCenter,Jinchang737100,China;3.LanzhouSanmaoIndustrialLLC,Lanzhou730316,ChinaAbstract:Polyvinylalcohol/ZIF-8compositefilmispreparedbysolutioncastingmethod,andischaracterizedbySEM,FT-IR,XRD,TGA,BET,etc.Inaddition,thewaterstability,mechanicalpropertiesandadsorptionperformanceforCongoRed(CR)withthecompositefilmareinvestigated.Thethermalstabilityofpolyvinylalcohol/ZIF-8compositefilmisimprovedandthesurfaceroughnessisincreasedcomparedwiththepolyvinylalcoholfilm.Theadsorptionprocessismainlychemicaladsorption,andtheadsorptionrateiscontrolledthroughinternaldiffusion,whichismoreinlinewiththequasisecond-orderadsorptionkineticmodelandLang⁃muiradsorptioncurve.ThemaximumadsorptioncapacityforCRcanreach159.63mg/gattheconcentrationof95mg/Landthetemperatureof20...
