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1、ARTICLEINPRESSJournalofCrystalGrowth306(2007)390–394www.elsevier.com/locate/jcrysgroAfacilehydrothermalroutetosynthesisofnonporousandporoushierarchicalcopperdendritesChaoquanHu,ZhenghongGao,XiaoruiYangDepartmentofChemistry,InstituteofScience,TianjinUniversity,Tianjin300072,Peo
2、ple’sRepublicofChinaReceived23September2006;receivedinrevisedform29May2007;accepted29May2007CommunicatedbyB.A.KorgelAvailableonline2June2007AbstractNonporousandporoushierarchicalcopperdendritesweresynthesizedbyafacilehydrothermaltreatmentofcopper–glycinecomplexinsolution.X-rayd
3、iffraction(XRD),field-emissionscanningelectronmicroscopy(FESEM),andtransmissionelectronmicroscopy(TEM)havebeenusedtoinvestigatethedendriticstructures.Apossiblegrowthprocessisproposedbyarrestingthegrowthataseriesofintermediatemorphologystagesduringtheshapeevolutionofcopperdendrit
4、esbasedonFESEMobservations.Theinfluenceofglycineonthemorphologydevelopmentwasexperimentallyinvestigated,andtheexperimentalresultsshowthatglycinemoleculeshaveasignificantmodifyingeffectonthebranchinggrowthofcoppercrystal.Thishydrothermalmethodmaygenerallybeappliedtosynthesisofothe
5、rface-centeredmetalcrystalswithdendriticstructure.r2007ElsevierB.V.Allrightsreserved.Keywords:A1.Dendrites;A2.Growthfromsolution;A2.Hydrothermalcrystalgrowth;B1.Copper1.IntroductionAmongallmetals,copperhasattractedmuchinterestbecauseoftheirwiderolesinelectronics,catalysts,resin
6、sInrecentyears,fabricationofnano-tomicroscopic-scaleandthermalconducting[15–18].Thoughdendriticstruc-metalswithspecialsizeandmorphologyareofgreattureofcoppercanbecreatedbyanelectrodepositioninterestformaterialschemistryduetotheirimportanceinprocess,thetrunkandbranchesinthedendr
7、iticstructurebasicscientificresearchandpotentialtechnologicalappli-areoftenunstabletosupporttheweightofsub-branches,cations[1–5].Metalcrystalswithdifferentshapes,suchasleadingtocollapses.Strategiesforfabricationbasedonplates[6],dendrites[7],cubes[8],wires[9]andflowers[10],growthi
8、nsolutionprovideaneffectiveroutetogeneratehavebeenrepo
