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1、J.Phys.Chem.C2007,111,5331-53365331AnchoringofSilverNanoparticlesonGraphiteandIsomorphousLatticesRitaPatakfalvi,²DavidDiaz,*,²PatriciaSantiago-Jacinto,³GeonelRodriguez-Gattorno,²,
2、andRobertoSato-Berru§FacultaddeQuõÂmica,InstitutodeFõÂsica,yCentrodeCienciasAplicadasyDesarrolloTecnoloÂgico,UniVers
3、idadNacionalAutoÂnomadeMeÂxico,CoyoacaÂn,04510,MeÂxicoD.F.,MeÂxico,andDepartamentodeFõÂsicaAplicada,CentrodeInVestigacionesAVanzadasdelIPN,MeÂrida97310,YucataÂn,MeÂxicoReceiVed:December14,2006;InFinalForm:February9,2007Recently,multiwalledN-dopedcarbonnanotubesweredecoratedwithAgnanoparticles(NP
4、s)byasimpleprocedure.Now,asacontinuationofourearlierwork,AgNP-graphiteandAgNP-molybdenitecompositeswerepreparedwiththiseasy,fast,andinexpensivemethod.Graphiteormolybdenite(MoS2)powderwassuspendedinN,N¢-dimethylformamide(DMF)inthepresenceofdifferentsilversalts.AsDMFisagoodreducingagentofsilvercat
5、ions,insituformationofAgNPstookplaceinthesuspension.WesupposedthattheAgNPformationispossibleonthesurfaceofthesupportsduetotheinteractionbetweentheunoccupiedsilverorbitalsandtheð-electronsofgraphiteorthe3psulfurorbitalsofMoS2.ThisisthefirstreportabouttheAgNP-MoS2nanocompositessynthesis.Acompletes
6、pectralandstructuralcharacterizationofthesecompositeswasaccomplishedbyUV-visandRamanspectroscopy,X-raydiffraction,high-resolutiontransmissionelectronmicroscopy,andparticlechargedetector.Accordingtothesemeasurements,nanocom-positeswereformeddependingontheoriginalsilversalt,support,surfacecharge,a
7、ndstabilizingagent.IntroductionMetallicNP-graphitecompositeshavevariousapplicationsascatalysts.4,5,9-11Differenttypesofgraphitenanofibers,asRecently,Agnanoparticles(NPs)havebeenanchoredsuc-supportforNiparticles,werestudiedinthecatalytichydrogena-cessfullyontothesurfaceofnitrogen-dopedmultiwalled
8、carbon51tionofcrotonaldehydetocrotylalcohol.Enhancedactivitynanotubesbyourgroup.Since,therearenoanysimpleandselectivitywasobservedusingagraphitesupportinsynthesesofmetallicNP-graphitecomposites,wedecidedtocomparisonwithNi/al
