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1、单分散纳米二氧化硅的制备与表征（Preparationandcharacterizationofsingledispersednano-silica）Thefirst27rollsfirst1phasesilicatethroughVol.27No.1In2008,OnFebruaryBULLETINOFTHECHINESECERAMICSOCIETYFebruary,2008,Preparationandcharacterizationofsingledispersednano-silicaFuYuanXiang,SunYanhuiGeXingheartSouthChinanormalun
2、iversity,chemistryandenvironmentGuangzhou,510006).Inthispaper,:Stobersol2gelmethod,thecompositionisaboutthesize80~150nmsingledispersednano-silicamicrospheresAndthetemperatureandammoniaconcentrationarediscussedDegreeandTheinfluenceofTEOSconcentrationandotherfactorsonthesynthesisofsilica.usingThesamp
3、leswerecharacterizedbyXRD,IR,SEMandTEM.TheresultstableMing:theincreaseofhydrolysistemperatureacceleratesthematurationofsilicaparticlesinsolution;TheincreaseinammoniaconcentrationincreasesnucleationspeedHydrolysisvelocityplusDrama,TheparticlesizeofsilicondioxideincreasesAndthedegreeofreunionalsoincr
4、eases.TheincreaseofTEOSalsoresultsinaslightincreaseinthesilicaparticlesizeTheextentofreunionisdeepened.keywords:monodisperse;nanoSiO2.sol2gelmethodIntermediatenumber:TQ127FUYuan2xiang,SUNYan2hui,GEXing2xinDocumentidentificationcode:Aarticlenumber:100121625(2008)2008SynthesisandCharacterizationofMon
5、odisperseSiO2nanoparticles(SchoolofChemistryandEnvironmentSouthChinaNormalUniversity,Guangzhou510006,China)Abstract:AStOberSol2gelmethodhasbeenusedtopreparemonodisperseanduniform2sizefrom80Inthispaper,ThesilicaparticleswereobtainedbyhydrolysisoftetraethylInethanolmediumuseammoniumascatalystandadeta
6、iledstudywascarriedoutorthosilicate(TEOS)Ontheeffectofcompany'stemperature,theamountofammoniumandTEOSonparticlesizesandtheDispersion.ThestructureofThesamplewasexaminedbyXRDandThechemicalbondofThesampleSurfacewasexaminedbyFT2IR.TheparticlesizeandThedispersionwereexaminedunderscanningElectronmicrosco
7、pyandtransmissionelectronmicroscopyTheresultsobtainedinthisstudyshowedthatThehighhydrolysistemperaturespeeduptheSiO2conglomerationinthesolution.Moreover,theparticleSizeandthedispersionofSiO2obtainedwereincr
