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1、Large-ScaleSynthesisofNovelTe3DDendriticSuperstructuresviaaBiphasicSolvothermalInterfaceReactionRouteNano-materials&ChemistryKeyLaboratory,WenzhouUniversity,Wenzhou325027,P.R.Chinacorrespondingauthor:shunwang@wzu.edu.cn,fax86-577-88373111ABSTRACTHighlyuniformTe3Ddendriticsuperstru
2、cturesweresuccessfullypreparedinlargequantitiesusingabiphasicsolvothermalinterfacereactionroute.Diethyldithiocarbamatotellurium(IV)(TDEC)usedasTesourceand2,2’-dithiodibenzoicacid(DSTA)usedasreducingagentweredissolvedintwoimmisciblesolventschloroformandNH4Cl-NH3buffersolution(pH=10
3、)respectively.ThecrystalstructureandmorphologicalstructureswerecharacterizedbyX-raydiffraction(XRD),scanningelectronicmicroscopy(SEM),transmissionelectronicmicroscopy(TEM),andselectedareaelectronicdiffraction(SAED).TheindividualTedendriteiscomposedofalongcentraltrunkwithsecondaryb
4、ranches,whichpreferentiallygrewinaparalleldirectionwithadefiniteangletothetrunk.Severalfactors,includingthereactiontemperature,volumeratiooftwosolvents,andpHvaluewereidentifiedtobeimportantandinvestigatedindetail.Thepossiblegrowthprocessisproposedbyarrestingthegrowthataseriesofint
5、ermediatemorphologystagesduringtheshapeevolutionofTe3DdendriticsuperstructuresbasedonSEMobservations.Theresultsimpliedthattheformationof3Dhierarchicalstructureswascontrolledbythekineticconditions.1.IntroductionInorganicmicro/nanocrystalshaveexhibitedmanyinterestingnovelsize-andsha
6、pe-dependentproperties.[1-2]Inthepastfewdecades,therehasbeenanincreasingnumberofreportsonthesynthesisof1-3Dinorganiccrystals,suchasrods,[3]wires,[4]plates,[5]tubules,[6]dendrites,[7]andcubes.[8]2Dor3Dstructuresaremoreattractivethan1Drodsorwiresbecausetheycannotonlytransportholesor
7、electronsmoreeffectivelyviatheinterconnectednetworksinthe2Dand3Dscaffoldsbutalsoprovideboththeelectricallinksandahighsurface/volumeratio.[9]Inparticular,synthesisofcomplexmicro/nanostructures,includingfractalpatterns,dendrites,andotherhierarchicalstructures,hasattractedgreatattent
8、ionbecausestudiesonthesehyperbran
