TheSynthesisMethodsandApplicationsofMoS2

WeiGan,WeiyuXu,XiaozhiSu,ZhenYu,HuJin,WeiLi,XinWang,YiRen,JiafangXie,YancaiYao,ZhuonengBi12AboutthepresentationLiteraturecollectanddataanalysisWeiGan,XiaozhiSu,ZhenYu,HuJin,WeiLi,XinWang,YiRen,JiafangXie,YancaiYao,ZhuonengBiPPTprepareWeiGan,WeiyuXuPresenterWeiyuXu3AboutthepresentationIntroductionSynthesismethodsApplicationsIntroductionHighon/offratios~about108ExcellentopticalpropertiesSizeabledirectbandgap~1.9eVHigh2Delasticmoduli～170N/mElectroneffectivemobilityrangingfrom1to480cm2/V·s4SyntheticmethodsMoS2Top-downBottom-upMicromechanicalexfoliationSolutionexfoliationCVDWetchemicalmethodHydrothermalsynthesis5Top-downmethods67ScotchtapemethodRepeatpeelingoffMoS2tofindthinflakesTransferthesethinMoS2flakesontotheSiO2/SisubstrateRepeatpeelingtheMoS2onScotchtapeObservelightgreencolorofMoS2flakesontheScotchtapeLiuK.etal.NanoLett.2012,12,1538.Micromechanicalexfoliation8DisadvantageHardtoappliedinlarge-scalesynthesisPoorrepeatabilityLowyieldAdvantageFreefromcomplicateddeviceEasy&quickoperationFewlayersHighexfoliatedefficiencySolutionexfoliation9ValeriaNicolosi,etal.Science,2013,340(6139)Schematicdescriptionofthemainsolutionexfoliationmechanisms10CharacterizationTechniquesTEMoffewlayermolybdenumdisulfide.(B)Low-resolutionTEMimagesofflakesofMoS2.(E)High-resolutionTEMimagesofMoS2monolayers.(Insets)FastFouriertransformsoftheimages.(H)Butterworth-filteredimagesofsectionsoftheimagesin(E).

Bottom-upmethods11Hydrothermalsynthesis12Synthesisprocedureofhydrothermalmethod13IllustrationoftheformationprocessLinMa,etal.MaterialsLetters132(2014)291–294Wetchemicalmethod

synthesis2DMoS2@oleylaminenanosheetClaudiaAltavilla.Etal.ChemMater2011,23(17),3879-3885Schemeoftheapparatusforthesynthesisof2DMS2@oleylaminenanosheetsbythermaldecompositionofthio-saltsofMoandWinthepresenceofoleylamine14CharacterizationTechniques15ClaudiaAltavilla.Etal.ChemMater2011,23(17),3879-3885CVD16KaiLiu.etal.NanoLett.2014,14,5097?5103ApplicationsBiomedicalEnergyStorageGassensorsElectrodeMemorydevicesField-effecttransistorsPhotocatalyticsPhototransistorsMoS217DrugDeliverywithPEGylatedMoS2

Nano-sheetsTheextraordinaryspecificsurfaceratioofMoS2

nanosheetsresultedfromtheiratomically-thin2DstructureenableshighlyefficientloadingoftherapeuticmoleculesTengLiu.etal.Adma.

2014,26,343318ChangbaoZhu.etal.Angew.Chem.

2014,53,2152ExcellentElectrochemicalperformanceforLithiumandSodiumstorageCapacity/mAhg-1Highrateperformanceofsuchacomposite19YifeiYu.NanoLett.2014,14,553ElectrocatalysisofMoS2forHydrogenEvolutionReaction2021MikaiChen.etal.ACSNano,

2014,

8

(4),4023MultibitDataStorageStatesFormed

inPlasma-TreatedMoS2TransistorsIllustrationofaback-gatedMoS2memoryFETcreatedbyasimpleplasmatreatmentItisestimatedthatthese4datastatescanbewelldiscerniblewithin10yearsoftheinitialapplicationsofprogrammingVG

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