介孔二氧化硅微球的制备

/[e-mail]510632PreparationofmesoporoussilicamicrosphereFANGXinshanDepartmentofMaterialscienceandEngineeringJinanUniversityGuangzhou510632AbstractUsingtetraethylorthosilicateTEOSassilicasourceandammoniaascatalystwhilevaryingtheinitialsurfac-tantdifferentsphericalmesoporoussilicaweresynthesizedinalkalicondition.Theparticleswerecharacterizedusingtrans-missionelectronmicroscopyTEM.Usingachargedtemplatecetyltrimethylammoniumbromideunderaqueouscon-ditionsparticlesofirregularsphericalshapeweresynthesisedwithhighlyorderedmesoporouschannels.Underethanol/watercosolventconditionsmoresmoothsphereswereyieldedwithamesoporestructure.Underhomogeneousconditionsusinganeutraltemplaten-dodecylaminemonodispersedregularsphereswithdisorderedchannelswereobtained.KeywordsmesoporoussphericalsilicatetraethylorthosilicateTEOS1992Kresge123-5200nmMCM-4112pH5401iquidcrystaltemplateLCT1.510am67//11.133220106JournalofChangchunUniversityofScienceandTechnologyNaturalScienceEditionVol.33No.2Jun.2010TEOSCTAB1.2S312-90KQ-100EEG10-2.4AC1mgJA2103DHG-9053A80-500~1200FEITecnai1.31.3.1StoberSi(OC2H5)4+4H2OSi(OH)4+4C2H5OH1.3.2500mlCTABTEOS12h5406h80-/2SDTGT8-131SDTGTCTAB2SDTGTCTAB/3SDTGT/5406h11Table.1Molarratioofreactantconcentrationinthe-preparationofmesoporoussilicamicrospheresNOH2ONH3TEOSCTAB01100030.210.125NOC2H3OHH2ONH3TEOSCTAB020350058150015330.23.85110.1250.3NOC2H3OHH2ONH3TEOSn-dodecylamine041173811.2610.29291Stober/11TEM..Fig.1TEMofmesoporousmicrosphereswithcetyltrimethylammoniumbromideassurfactantinaqueoussolution.Illustrationspartofasinglenano-particlestoenlargetheimagetohighlightthemesoporousstructureofparticles2a/TEMbFig.2aTEMofmesoporousmicrosphereswithcetyltrimethylammoniumbromideassurfactantinethanol/waterhomogeneousconditionsFig.2bIllustrationspartofasinglenano-particlestoenlargetheimagetohighlightthemesoporousstructureofparticles3/TEMTEOSCTABFig.3TEMofmesoporousmicrosphereswithcetyltrimethylammoniumbromideassurfactantinethanol/waterhomogeneousconditionsusingahigherconcentrationofTEOSandCTAB4/TEMFig.4TEMofmesoporousmicrosphereswithdodecylamineassurfactantinethanol/waterhomogeneousconditionsTEM/1242010921212TEM12/12CTAB133Stober//1KresgeCTLeonowiczMEVartuliWJetal.Orderedmesoporousmolecularsievessynthesizedbyaliquid-crys-taltemplatemechanismJ.Nature19923596397710-712.2BeckJSVartuliJCRothWJeta1ANewFamilyofMesoporousMolecularSievesPreparedwithLiquidCrys-talTemplatesJJAmChemSoc19921142710834-108433SchoemanBJHigbergHSterteJ.NanoparticlesofmicroporousmaterialsJNanostruct.Mater1999121-449.4LuYFanHStumpAetal.Aerosol-AssistedSelf-As-semblyofMesostructuredSphericalNanoparticlesJ.Nature19993986724223-226.5FowlerCEKhushalaniDLebeauBetal.NanoscaleMaterialswithMesostructuredInteriorsJAdvMater2001139649-652.6.J20044184-89.7.J2004182149-154.8AndersonMTMartinJEOdinekJGetal.Surfactant-TemplatedSilicaMesophasesFormedinWaterCosolventMixturesJChemMater1998101311-321.9CaiQLuoZPangWetal.DiluteSolutionRoutestoVari-ousControllableMorphologiesofMCM-41SilicawithaBasicMediumJChem.Mater2001132258263.10BuchelGGrunMUngerKKetal.TailoredsynthesesofnanostructuredsilicasControlofparticlemorphologyJSupramolecularSci199853-4253-259.11GrunMUngerKKMatsumotoAetal.Novelpath-waysforthepreparationofmesoporousMCM-41mater-ialscontrolofporosityandmorphologyMicroporousandMesoporousMater1999272-3207-216.12RobertINooneyDhanasekaranThirunavukkarasuYimeiChenetal.OstafinSynthesisofNanoscaleMes-oporousSilicaSphereswithControlledParticleSizeJ.ChemMater200214114721-4728.13.J.2004208895-900.293