具有表面拉曼增强活性的银纳米材料的合成和表征.pdf

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1、第30卷第2期无机化学学报V01．30No．22014年2月CHINESEJOURNALOFIN0RGANICCHEMISTRY442．450具有表面拉曼增强活性的银纳米材料的合成和表征黄庆if,1朱霞石(扬州大学化学化X--学院，扬州225009)摘要：利用简易无模板湿化学法合成了由纳米片组装的具有j维分级结构的银纳米材料。场发射扫描电子显微镜表明柠檬酸氢二铵在这种结构形成过程中起到很重要的作用。X射线衍射和透射电子显微镜表征进一步证明了这种结构的形成。此外本文还对这种分级结构进行了紫外和拉曼表征。这种新型的银纳米结构有望作为一种高灵敏度的表面拉

2、曼增强基底。关键词：湿化学法；银；表面拉曼增强；罗丹明中图分类号：O614．12文献标识码：A文章编号-1001—4861(2014)02—0442—09DOI：10．11862／CJIC．2014．019SynthesisandCharacterizationOfSERS—ActiveSilverNanomaterialHUANGQing—LiZHUXia—Shi(CollegeofChem~tu&ChemicalEngineering,YangzhouUniversity,Yangzhou，Jiangsu225009，China)Abstrac

3、t：Three—dimensional(3D)hierarchicalsilvernanomaterialsfHSNs)werepreparedbyasimplesurfactantfreewet—chemicalmethodatroomtemperature．Theas．preparedHSNsexhibitsphericalmorphologiesandareconstructedwithmany2Dnanoflakesasbuildingblocks．Fieldemissionscanningelectronml’crose0pvfFESEM

4、)studiesshowthatdiammonium2一(carboxymethy1)一2一hydroxysuccinate(diammoniumhydrogencitrate)(C6Hl4N207)playsakeyroleintheformationofsuchHSNs．X-raydiffractionfXRD)andtransmissionelectronmicroscOpv(TEM)resultsconfirmtheformationofHSNs．Theopticalpropertiesandsurface-enhancedRamansca

5、ttering(SERS)effectwerealsoinvestigatedbyUV—VisandRamanspectra．TheHSNsCOUldbeservedashighlvsensitivesurface—enhancedRamanscattering(SERS)substratesforchemicaldetection．Keywords：wet—chemicalmethod；silver；surface—enhancedRamanscattering(SERS)；Rhodamine(R6GandRB)0Introductionprim

6、arycrystals．Theseprimaryunitsmaystackinanorientedfashiontoproducealargerstructure，inInrecentyears，muchattentionhasbeenpaidtowhichtheadjacentprimaryunitsareself-assembledthreedimensional(3D)hierarchicalnanostructuresbysharingacommoncrystallographicorientation．Toduetotheirpromis

7、ingcomplexfunctionsanddate，awidevarietyofinorganicmaterialsincludingwidespreadpotentialapplicationsingassensor，drugmetal，metaloxide，sulfide，hydrateandothermineralsdelivery，photocatalysisandotherapplications．havebeensuccessfullypreparedwithhierarchicalHierarchicalnanostructures

8、canbepreparedbyself-shapesbyvariousselgassemblymethods[一．Howe