氧化鋅-二氧化鈦納米復(fù)合體系的制備、表征及性能.pdf

1、分類號：密級天津理工大學(xué)研究生學(xué)位論文Y3116358氧化鋅一二氧化鈦納米復(fù)合體系的制備、表征及性能(申請碩士學(xué)位)學(xué)科專業(yè)：凝聚態(tài)物理研究方向：納米材料與納米結(jié)構(gòu)作者姓名：崔永鋒指導(dǎo)教師：袁志好教授2006年5月AbstractDuetothequantumsizeeffect，minordimensioneffect，andinterfaceeffect，nanomaterialhasshownaseriesofexcellentp

2、roperties，includingelectronic，magneticoptics，mechanical，optoelectronicandSOonNanocompositematerialnotonlycanexhibitthepropertiesofthesingleonebutalsocanenlargeandenhancedithasreceivedagreatinterestinginrecentyearsZnOandT

3、i02areboththeimportantsemiconductormaterial，basedonthedifferentpropertiesoftheirbandgapstucture，thephotoelectmicpropertiescanbeimprovedandenhancedbytheircouplinginnanoscaleInthisletterwewillstudysynthesismethodandoptical

4、propertiesoftheZnOTi02compositesystemFirstlyUsingZi(OCaH9)4asrawmaterial，basedOilthesolgelmethodtosynthesistheTi02colloid，ThefactoraffectthepropertiesofthecolloidandthebestconditiontopreparethecolloidwasstudiedAndbydippi

5、ngtechniquetheextrafineZi02thinfilmwassynthesisthloughthecolloidSamelyUsingZn(Ac)2asrawmaterial，ZnOthinfilm，znonanorodwerepreparedusingZnOcolloidsynthesisbysol—gelmethodThesampleswereinvestigatedbyXRD，SEM，Uv—vis，respecti

6、velyThecharacterizationandopticalpropertieswerestudiedandthereasonoftheopticalemissionofZnOwasdiscussedFinallybasedontheformerwork，threedifferentnanocompositesystemwereprepared，including：ZnOTiOznanocompositefilms，ZnOTi02

7、multi—naocompositefilms，systemofZnOnanorodandTi02ThesampleswerecharacterizedbyXRD，TEM，UvvisrespectivelyItwasfoundthattheopticalabsorptionbandedgeofTi02andopticalemissionintensityofZnOwereaffectedKeywords：nanocompositemat