納米TiO-,2-的表面改性及機理研究.pdf

1、重慶大學碩士學位論文納米TiO的表面改性及機理研究姓名：鄒建申請學位級別：碩士專業(yè)：材料學指導教師：高家誠20040401重壅奎堂堡主蘭堡堡莖墨苧苧塑ABSTRACTNanoTi02hasattractedmuchattentionintheresentyearsaSanewtypeofinorganicfimctionmaterial，becauseofitsexcelledpropertyHoweveragglomeratingin

2、organicsolventandphotocatalysislimititsapplicationAccordinglythekeythatnano—Ti02callbeappliedwidelyliesinthatnauoTi02iscoatedwithinorganicandorganiccompoundforthepurposeofshieldingitsphotocatalysisanddispersingitwellinth

3、eorganicsolventThispaperreportsthatnanoTi02iscoatedwithA1203，Si02orbothtogetherbychemicalliquiddepositionThecoatingischaracterizedbyRamanspectroscopy，X—raydiffractionspectroscopy(XRD)，F(xiàn)ouriertransforminfraredspectroscopy

4、(FT一鰳andTransmissionelectronmicroscope(TEM)ThecontentofcoatingcompoundandantiultravioletcapacityofllanoZi02aremeasuredbyXrayfiuorescence(XRF)andUVVisspectrophometerNano—Ti02coated、撕也inorganiccompoundismodifiedwimsilaneco

5、uplereagent，andthecontentofcoatingcompoundCallbecalculatedfromthedifferenceofsamplesweightlessnessaftertheyarecalcinedat850。CThewettingcapacityandthedispersingofdiversespecimensareinvestigatedTheinorganiccoatingonthesurf

6、aceofnKno—TitaniaisnoncrystalSi02iscoatedonthesurfaceofnano—Ti02toformsilicagelpolymerwithaTi—O—Sibind，andA1compoundexists、以nlAIOOHandpartAI(OH)3Accordingtodifferentreactioncondition，threecoatinginorganicmorpholo百esCallb

7、eacquired：partcoatingnucleuscoatingandintegratefilmcoating，andtheintegrateanddensefilmcatlshieldeffectivelyphotocatalysisofnanoTi02Theacquirementofmorphologiesisdeterminedofsupersaturationofcoatingcompound，anditcanbedrew

8、aconclusionfromthethermodynamicstheorythatthesupersaturationforformingnucleusinthesamesubstanceishigherthanoneinthedifferentsubstancethatisAc’Ac：Besides，developingoffilmhavenoenergybarrierThedenseandintegratefilmofSicomp

9、ound，correspondingto5％Si02callbeachievedinmefollowingtechnologyconditionthatis，mixingtheslurryroundfullyatpH=10，addingthecoatingreagentandneutralizationreagentintotheslurryatthesanletimeinthe60minutesat85“C954CatpH9～10，f