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ID:35158595
大小:5.84 MB
页数:17页
时间:2019-03-20
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1、ViewOnlineTUTORIALREVIEWwww.rsc.org/csr
2、ChemicalSocietyReviewsElectrochemicalsurface-enhancedRamanspectroscopyofnanostructuresDe-YinWu,Jian-FengLi,BinRen*andZhong-QunTian*Received19thMarch2008FirstpublishedasanAdvanceArticleontheweb3rdApril2008DOI:10.1039/b707872mTh
3、istutorialreviewfirstdescribestheearlyhistoryofSERSasthefirstSERSspectrawereobtainedfromanelectrochemicalcell,whichledtothediscoveryoftheSERSeffectinmid-1970s.Uptodate,over500papershavebeenpublishedonvariousaspectsofSERSfromelectrochemicalsystems.Wethenhighlightimporta
4、ntfeaturesofelectrochemicalSERS(EC-SERS).Therearetwodistinctivelydifferentpropertiesofelectricfields,theelectromagneticfieldandstaticelectrochemicalfield,co-existinginelectrochemicalsystemswithvariousnanostructures.Bothchemicalandphysicalenhancementscanbeinfluencedtosome
5、extentbyapplyinganelectrodepotential,whichmakesEC-SERSoneofthemostcomplicatedsystemsinSERS.GreateffortshavebeenmadetocomprehensivelyunderstandSERSandanalyzeEC-SERSspectraonthebasisofthechemicalandphysicalenhancementmechanismsinordertoprovidemeaningfulinformationforre
6、vealingthemechanismsofelectrochemicaladsorptionandreaction.TheEC-SERSexperimentsandapplicationsarethendiscussedfrompreparationofnanostructuredelectrodestoinvestigationofSERSmechanismsandfromcharacterizationofadsorptionconfigurationtoelucidationofelectrochemicalreacti
7、onmechanisms.Finally,prospectivedevelopmentsofEC-SERSinsubstrates,methodsandtheoryarediscussed.1Historyofelectrochemicalsurface-enhancedelectrodesurfacesasaqueoussolutiondoesnotleadtonotableRamanspectroscopyinterferencetothesurfacesignal.However,theRamanpro-cesshasi
8、tsintrinsicdisadvantageowingtotheverylowThefirstsurface-enhancedRamanscattering(SERS)spectradetectionsensitivity.Therefore,electrochemicalRamanex-wereobtainedfromanelectrochemicalcell,whichledtotheperimentswithoutenhancementwasimpracticalandjustdiscoveryoftheSERSeffec
9、tinmid-1970s.Inlookingback,impossibleforapplications.onemaynotbetoosurprisedaboutwhytheSERSresearchInordertoovercomethefatallimitationinth
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