二硫化钼的合成

Solid state lubricant
unsupported catalyst
Ultra high specific surface area
heavy crudes upgrading
Supporting Information
AFM of the first step on the Si substrate
Nano sphere MoS2 synthesized with lowconcentration high-ionic surfactant PEG-2000 assist
Conclusion
Hybrid
Modification
Reference
1. 2. 3. 4. X Fan, P Xu, YC Li, D Zhou, Y Sun, et al. Controlled Exfoliation of MoS2 Crystals into Trilayer Nanosheets [J]. J. Am. Chem. Soc. 2016, 138, 5143−5149. 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，Z Gholamvand，et al. Large-scale production of size-controlled MoS2 nanosheets by shear exfoliation [J]. Chem. Mater. 2015, 27, 1129−1139 E 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 SCIENCE LETTERS 20,2001,187–191. ZZ Wu. The Preparation and Properties of MoS2(WS2) [D]. Hu Nan: Zhong Nan University,2012 E Pettersson，D Topgaard，P Stilbs，O Söderman. Surfactant/Nonionic polymer interaction. A NMR diffusometry and NMR electrophoretic investigation [J]. Langmuir, 2004, 20(4):1138-43. B Cabane，R Duplessix. Organization of surfactant micelles adsorbed on a polymer molecule in water : a neutron scattering study [J]. J. Physique 43 (1982) 1529-1542 .
Synthesis Methods
The synthesis methods of MoS2
Contents
P
ART
ONE
Solution exfoliation method
Solution Exfoliation
Solution exfoliation
Solvent-based exfoliation
(NH4)2MoS4+2CTAC (NH4)2MoO4+4Na2S+8HCl (NH4)2MoS4+8NaCl+4H2O
(CTA)2MoS4 +2NH4Cl
(CTA)2MoS4+2NH2OH· HCl
MoS2 +N2 +2NH4Cl+2H2O+2H2S
Surfactant Assisted Synthesis
Contents
P
ART
TWO
Surfactant assisted synthesis method
Surfactant Assisted Synthesis
(NH4)2MoO4
Na2S
SБайду номын сангаасrfactant
Mixed solution Precipitate Solution reduction MoS2
Ion intercalation exfoliation
Solvent-based Exfoliation
Schematic diagram of solvent-based exfoliation
Ion Intercalation Exfoliation
Schematic diagram of ion intercalation exfoliation
02
Synthesis methods
Introduction
The structure of transistor with 1-nanometer gate length
Introduction
Properties Crystal structure Density
Graphite Laminar hexagonal 2.2 g/mL at 25 oC
Molybdenum disulfide Laminar hexagonal 5.06 g/mL at 25 oC
Appearance
Hardness Structure
Metallic black
Moh's hardness: 1～2 IF, nanotube
Metallic steel gray
The Synthesis of Molybdenum Disulfide
张莹莹 苏建猛 彭春蕾 陈昊 郑娇 郭瑞妍 黄民松 饶泽鹏 黄绵吉 彭晓旭 陈克艺 张峰 洪庆旋
Contents
01
Introduction
02
Synthesis methods
Contents
01
Introduction
5.
6. 7.
8.
Thanks for Your Listening Thanks for All My Teammates And Also Thanks for the One Who Always Backs Me Up
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Application
Minimal friction factor Ultra low wear Higher chemical stability
Supporting Information
Laser induced synthesis
The flow chart of laser induced synthesis method
Laser induced synthesis
SEM image of the as synthesized MoS2 power
Hydrochloric acid
The flow chart of surfactant assisted synthesis method
Surfactant Assisted Synthesis
CTAC
The structure of CTAC micelle in water
Surfactant Assisted Synthesis
Moh's hardness 1.0～1.5 IF, nanotube
The property comparison between graphite and MoS2
Introduction
The structure of MoS2
Contents
01
Introduction
02
Synthesis methods
Controlled Solution Exfoliation Synthesis
Bulk MoS2 crystal
washed and dried
centrifugation
dried
LixMoS2
MoS2
Schematic diagram of controlled solution exfoliation synthesis
TEM of nano hollow sphere MoS2
Surfactant Assisted Synthesis
Hexagonal MoS2 nanopartical synthesized with anionic surfactant SDBS assist
Micro hollow sphere MoS2 synthesized with low-concentration non-ionic surfactant PEG2000 assist
Controlled Solution Exfoliation Synthesis
XPS of LixMoS2
Controlled Solution 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