二硫化鉬的合成

1、The Synthesis of Molybdenum Disulfide 張瑩瑩 蘇建猛 彭春蕾 陳昊 鄭嬌 郭瑞妍 黃民松 饒澤鵬 黃綿吉 彭曉旭 陳克藝 張峰 洪慶旋Contents01Introduction 02Synthesis methods Contents01Introduction 02Synthesis methods IntroductionThe structure of transistor with 1-nanometer gate length IntroductionPropertiesGraphiteMolybdenum disulfideCrystal s

2、tructureLaminar hexagonalLaminar hexagonalDensity2.2 g/mL at 25 oC5.06 g/mL at 25 oCAppearanceMetallic blackMetallic steel grayHardnessMohs hardness:12Mohs hardness1.01.5StructureIF, nanotubeIF, nanotubeThe property comparison between graphite and MoS2IntroductionThe structure of MoS2 Contents01Intr

3、oduction 02Synthesis methods Synthesis MethodsThe synthesis methods of MoS2ContentsSolution exfoliation methodARTPONESolution ExfoliationSolution exfoliationIon intercalation exfoliationSolvent-based exfoliationSolvent-based Exfoliation Schematic diagram of solvent-based exfoliation Ion Intercalatio

4、n ExfoliationSchematic diagram of ion intercalation exfoliationBulk MoS2 crystalLixMoS2washed and driedcentrifugationdriedMoS2Schematic diagram of controlled solution exfoliation synthesisControlled Solution Exfoliation SynthesisXPS of LixMoS2 Controlled Solution Exfoliation SynthesisControlled Solu

5、tion Exfoliation Synthesis TEM images of exfoliated MoS2 nanosheets AFM images the lateral size distribution shown in (e) was counted from 509 nanosheets, and the thickness distribution is based on 261 nanosheets with lateral sizes over 500 nm ContentsSurfactant assisted synthesis methodARTPTWOSurfa

6、ctant Assisted SynthesisHydrochloric acid(NH4)2MoO4Na2SSurfactantMixed solutionPrecipitateSolution reductionMoS2The flow chart of surfactant assisted synthesis method CTACThe structure of CTAC micelle in waterSurfactant Assisted Synthesis(NH4)2MoO4+4Na2S+8HCl (NH4)2MoS4+8NaCl+4H2O(NH4)2MoS4+2CTAC (C

7、TA)2MoS4 +2NH4Cl(CTA)2MoS4+2NH2OHHCl MoS2 +N2 +2NH4Cl+2H2O+2H2S Surfactant Assisted SynthesisTEM of nano hollow sphere MoS2 Surfactant Assisted SynthesisHexagonal MoS2 nanopartical synthesized with anionic surfactant SDBS assistMicro hollow sphere MoS2 synthesized with low-concentration non-ionic su

8、rfactant PEG-2000 assistNano sphere MoS2 synthesized with low-concentration high-ionic surfactant PEG-2000 assistSurfactant Assisted SynthesisConclusion HybridModificationReferenceX Fan, P Xu, YC Li, D Zhou, Y Sun, et al. Controlled Exfoliation of MoS2 Crystals into Trilayer Nanosheets J. J. Am. Che

9、m. Soc. 2016, 138, 51435149.R Ganatra，Q Zhang. Few-Layer MoS2: A Promising Layered Semiconductor J. Acs Nano, 2014, 8(5):4074-99.D Dumcenco, D Ovchinnikov, K Marinov, M Gibertini, N Marzari et al. Large-Area Epitaxial Monolayer MoS2 J. Acs Nano, 2015, 9(4):4611-20.E Varrla，C Backes，KR Paton，A Harvey

10、，Z Gholamvand，et al. Large-scale production of size-controlled MoS2 nanosheets by shear exfoliation J. Chem. Mater. 2015, 27, 11291139E Borsella，S Botti，MC Cesile，S Martelli，A Nesterenko，et al. MoS2 nanoparticles produced by laser induced synthesis from gaseous precursors J. JOURNAL OF MATERIALS SCI

11、ENCE LETTERS 20,2001,187191.ZZ Wu. The Preparation and Properties of MoS2(WS2) D. Hu Nan: Zhong Nan University,2012E Pettersson，D Topgaard，P Stilbs，O Sderman. Surfactant/Nonionic polymer interaction. A NMR diffusometry and NMR electrophoretic investigation J. Langmuir, 2004, 20(4):1138-43.B Cabane，R

12、 Duplessix. Organization of surfactant micelles adsorbed on a polymer molecule in water : a neutron scattering study J. J. Physique 43 (1982) 1529-1542 .Thanks for All My Teammates Thanks for Your ListeningAnd Also Thanks for the One Who Always Backs Me Up - My Seat BackApplicationMinimal friction factorUltra low wearHigher chemical stability Solid state lubricantheavy crudes upgrading Ultra high specific surface areaunsupported catalystSupporting Information A