基于ZmO納米薄膜的貴金屬(Au,Ag)SERS基底的制備及SERS特性研究.pdf

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3、lAbstractInthisthesjs，wemain】ystudiedthesynthesisandapplicationofnoblemetal(M=Au，Ag)SERS(SurfaceE11llenceRamanScatting)substratesbasedonznOnanometerthinfilms，suchasAu／Znomace—l汰ehollowhierarchicalmicro—nanostructures，Au／

4、ZnOmnocompositemateriaS，andAg／Zn0nanosheetarraysThemajorcontentscanbesummarizedaSfollows1Zn0net—likenanosheetsweremstlypreparedthmughanelectrodepositionmethodAunanoparticleswereattachedtoonthesur自cesandedgesofZnonanoshee

5、tsthroughthesecondelectrodeposition，thesamplewasusedasnanocompositeSERSsubstrate，andthemo叩hology，structuralandRamane仃IectoftheSERSsubstratewerecharacterized，ExperimentalresultsshowthatZnOmnosheetsweremutuallyhmgedandVert

6、icallygr0、vnonITosubstrate，andAunanoparticlesweregrownalongthe(111)cryStalorientation，theAu／ZnOnanocompositematerialhasbetterRamanactiVity2ZnOnanoroda11rayswerefirstlypreparedt11roughaneletrodepositionmethod，a11dthen，the

7、preparedZn0nanomdarrayswereemployedasworkingelectrodeAgraphitenake、VasusedaSanodeThesecondelectrodepositionwascarriedoutinthecenainconcentrationelectml”eunderthecollStantcurrentdenSityatroomtemperatureA刖ZnOmace—lil(eh01l

8、owhierarchicalmicronanostructuresandAg／Zn0mnosheetarrayswereconsequemlyobtailledTheeXperimentalresultsshowthatthegoldcatalyZedetchingismorefaVorableforZnOmnorodarraysdecoratedwithnoblemetal(M2Au，Ag)nanopaniclesEspecially

9、，forA∥ZnOnanosheetarrays，tllisphenomenonofthegoJdcatalyzedetch協(xié)gtoZnOwaSveryserious，alrI】ostaUZn0nanorodswereetchedAtthesametiITlesolutionconcentrationcancontrolthemorphologiesofnanocompositeSERSsubstratesTherefore，i11or

10、dertopreparemo印hologycomrollableSERSsubstrates，theappropriateelectrolyteconcentrationandAucatalyticconditionSareessentialITheRamanpropertiesofthepr印aredM／’ZnonanocompositeSERSsubstrateswerestudied，whichshowthattheM／ZnOna