自下而上與自上而下法構(gòu)筑納米結(jié)構(gòu)及其物性研究.pdf

1、中國科學(xué)技術(shù)大學(xué)博士學(xué)位論文自下而上與自上而下法構(gòu)筑納米結(jié)構(gòu)及其物性研究姓名：張淑東申請學(xué)位級別：博士專業(yè)：無機化學(xué)指導(dǎo)教師：謝毅20100401AbstractABSTRACTInthisdissertation，ourgoalistoexploretoconstructhigherorderedmicro／nanostructureswithspecificsizes，shapes，andhierarchiesbyapplyinge

2、ither“top。down’’wayor“boRomup’’wayMoreoverbasedonunderstandingthemorphologyandcrystalstructuralcharacteristicsofthefinalproductthecorrespondingstructuredependentpropertiesoftheasobtainedinorganichierarchicalmicro‘／nanoma

3、terialswerealsoinvestigatedinourdissertationThemainpartsoftheresultsaresummarizedbrieflyasfollows：1Basedontheselfmodelingoftheproduct’Scrystalandthe“top—down’’wayonthebasisofanetchingprocess，wesuccessfullyrealizedthecons

4、tructionofPbSehierarchicalsuperstructuresTheformationprocessinvolvesthecompetitionbetweenprotectionof1，10phenandetchingofOH“inducedetchingincrystalfacetofPbSeThisfacile‘top—down’’wayonthebasisofanetchingprocesscouldalsob

5、eextendedtothepreparationofotherhierarchicalsuperstructuresoffunctionalinorganicmaterials2Forthefirsttime，theauthorsdevelopedanewandconvenientroutetoplanthighqualitycalciumoxalatedehydrate(COD)tetragonalprismsfromtheC204

6、2‘sourceofslowdecompositionofL—ascorbicacidFurthermore，theCODcrystalswhichwereobtainedintheabsenceofcommonlyusedpolymersorsurfactantsshowimpressivehigherorderedtetragonalprismsSubsequently，usingCODtetragonalprismsasanimp

7、ortantin—situtemplate，wereasonablydesignatopdownsolidphasestrategytosuccessfullyfabricatemacroscaledporousCaC03tetragonalprismswithdifferentporesizesTheasobtainedCaC03tetragonalprismswiththedifferentporesizesareoverallsa

8、feandenvironmentfriendlyandtheapplicationofnontoxicnanoarchitecturesassupportmatrixsuccessfullymitigatesthecommonproblemsforphasechangematerialsofinorganicsaltssuchasphaseseparationandsupercoolingeffect，showingtheprospec

9、tivesignsfortheapplicationofenergysavingfieldinthefuture“smarthouse”systems3Theauthorssuccessfullydevelopedthecombinationoftheanisotropicgrowthoftheproduct’Scrystalandthe“boaomup”routeonthebasisofselfassemblyprocesstorea