ZG客户在国际期刊上发表的文章4

文档简介PreparationandcharacterizationofnovelCe-dopednonstoichiometricnanosilica/polysulfonecompositemembranesYuqingZhang,LiboShan,ZhengyuTu,YahuiZhangPolysulfone（PSF）isakindofmembranematerialwithbetterperformanceandbroadlyappliedinwaterpurification,biochemistryseparation,Chinesetraditionalherbdrugsextractionandconcentration,etc.ButPSFmembranehasatendencytobecontaminatedforitshydrophobicity,whichcanresultindecliningoffluxandlifeofthemembrane.ToenhancethecapabilityofPSFmembrane,suchastensilestrength,hydrophilicproperty,anti-fou领ability,novelorganicinorganiccompositemembraneswerepreparedbyaprocessofaddingmodifiednanosilicawithhigheractivityandhydrophilicpropertytotheporousmatrixofPSF.Ce-dopednonstoichiometricnanosilica（modifiednanosilica）wassynthesizedbydopingtherareearthCeelement.Compositemembraneswerepreparedbysolgelprocessandcharacterizedbytestoftensilestrength,contactangel,porosity,infraredspectroscope（IR）,environmentscanningelectronmicroscope（ESEM）andperformanceforoilwaterseparation.Theresultsshowthattensilestrengthisimprovedtoalargeextentandcontactangelreducesfrom78.6to41.7;porosityreaches75%.IRspectrumofthecompositemembraneindicatesthattheceriumelementhasenteredintotheframeworkofnanosilica.ESEMmicrographsindicatethatthecompositemembraneowningtheasymmetrystructurehastwolayersofcompactlayerandporouslayerandthatmodifiednanosilicaisuniformlydispersedinPSF.Thefluxintreatmentofwastewatercontainingoilisgreatlyincreased,soitindicatesthattheantifou领abilityissignificantlyenhancedandtreatmentofwastewatercontainingoilusingthecompositemembranedevelopedisfeasibleanddesirable.