Abstract
Molybdenum disulfide (MoS2) has attracted a great deal of attention to its unique properties in recent years. In this work, a scalable and green method was developed for the production of high-quality MoS2 nanosheets using shear-assisted supercritical CO2 exfoliation. Our experiments indicate that high temperature, pressure, and shearing speed are favorable to the exfoliation of MoS2. It is found that over 95% of the exfoliated MoS2 nanosheets are less than 10 layers, among which about 50% are 1–4 layers. Raman spectra and XRD patterns reveal that few-layer MoS2 nanosheets with high planar crystal structure are successfully prepared. Moreover, the produced MoS2 has a better stability in N-methyl-pyrrolidone (NMP) than the bulk MoS2. The concentration of the exfoliated MoS2 in NMP after sedimentation for 7 days is as high as 0.97 mg/ml.
Similar content being viewed by others
References
Geim AK (2009) Graphene: status and prospects. Science 324:1530–1534
Novoselov KS, Fal’ko VI, Colombo L, Gellert PR, Schwab MG, Kim K (2012) A roadmap for graphene. Nature 490:192–200
Wang QH, Kalantar-Zadeh K, Kis A, Coleman JN, Strano MS (2012) Electronics and optoelectronics of two-dimensional transition metal dichalcogenides. Nat Nanotechnol 7:699–712
Late DJ, Liu B, Matte HR, Dravid VP, Rao C (2012) Hysteresis in single-layer MoS2 field effect transistors. ACS Nano 6:5635–5641
Lembke D, Bertolazzi S, Kis A (2015) Single-layer MoS2 electronics. Acc Chem Res 48:100–110
Radisavljevic B, Radenovic A, Brivio J, Giacometti V, Kis A (2011) Single-layer MoS2 transistors. Nat Nanotechnol 6:147–150
Lukowski MA, Daniel AS, Meng F, Forticaux A, Li L, Jin S (2013) Enhanced hydrogen evolution catalysis from chemically exfoliated metallic MoS2 nanosheets. J Am Chem Soc 135:10274–10277
Wang X, Xing W, Feng X, Song L, Hu Y (2017) MoS2/polymer nanocomposites: preparation, properties, and applications. Polym Rev 57:440–466
Novoselov K, Jiang D, Schedin F, Booth T, Khotkevich V, Morozov S, Geim A (2005) Two-dimensional atomic crystals. Proc Natl Acad Sci USA 102:10451–10453
Radisavljevic B, Kis A (2013) Mobility engineering and a metal–insulator transition in monolayer MoS2. Nat Mater 12:815–820
Kang K, Xie S, Huang L et al (2015) High-mobility three-atom-thick semiconducting films with wafer-scale homogeneity. Nature 520:656–660
Chen S-M, Lin Y-J (2018) Controlled growth of MoS2 nanopetals on the silicon nanowire array using the chemical vapor deposition method. J Cryst Growth 481:18–22
Nguyen EP, Carey BJ, Daeneke T, Ou JZ, Latham K, Zhuiykov S, Kalantar-zadeh K (2014) Investigation of two-solvent grinding-assisted liquid phase exfoliation of layered MoS2. Chem Mater 27:53–59
Wang D, Wu F, Song Y, Li C, Zhou L (2017) Large-scale production of defect-free MoS2 nanosheets via pyrene-assisted liquid exfoliation. J Alloys Compd 728:1030–1036
Ramakrishna Matte HSS, Gomathi A, Manna AK, Late DJ, Datta R, Pati SK, Rao CNR (2010) MoS2 and WS2 analogues of graphene. Angew Chem 122:4153–4156
Li H, Wu J, Yin Z, Zhang H (2014) Preparation and applications of mechanically exfoliated single-layer and multilayer MoS2 and WSe2 nanosheets. Acc Chem Res 47:1067–1075
Lee YH, Zhang XQ, Zhang W et al (2012) Synthesis of large—area MoS2 atomic layers with chemical vapor deposition. Adv Mater 24:2320–2325
Coleman JN, Lotya M, O’Neill A et al (2011) Two-dimensional nanosheets produced by liquid exfoliation of layered materials. Science 331:568–571
Grayfer ED, Kozlova MN, Fedorov VE (2017) Colloidal 2D nanosheets of MoS2 and other transition metal dichalcogenides through liquid-phase exfoliation. Adv Colloid Interface Sci 245:40–61
Brent JR, Savjani N, O’Brien P (2017) Synthetic approaches to two-dimensional transition metal dichalcogenide nanosheets. Prog Mater Sci 89:411–478
Zerda AS, Caskey TC, Lesser AJ (2003) Highly concentrated, intercalated silicate nanocomposites: synthesis and characterization. Macromolecules 36:1603–1608
Rangappa D, Sone K, Wang M et al (2010) Rapid and direct conversion of graphite crystals into high-yielding, good-quality graphene by supercritical fluid exfoliation. Chemistry 16:6488–6494
Zheng X, Xu Q, Li J, Li L, Wei J (2012) High-throughput, direct exfoliation of graphite to graphene via a cooperation of supercritical CO2 and pyrene-polymers. RSC Adv 2:10632–10638
Li L, Zheng X, Wang J, Sun Q, Xu Q (2012) Solvent-exfoliated and functionalized graphene with assistance of supercritical carbon dioxide. ACS Sust Chem Eng 1:144–151
Sathish M, Mitani S, Tomai T, Honma I (2014) Supercritical fluid assisted synthesis of N-doped graphene nanosheets and their capacitance behavior in ionic liquid and aqueous electrolytes. J Mater Chem A 2:4731–4738
Song N, Jia J, Wang W, Gao Y, Zhao Y, Chen Y (2016) Green production of pristine graphene using fluid dynamic force in supercritical CO2. Chem Eng J 298:198–205
Gao H, Zhu K, Hu G, Xue C (2017) Large-scale graphene production by ultrasound-assisted exfoliation of natural graphite in supercritical CO2/H2O medium. Chem Eng J 308:872–879
Rangappa D, Sone K, Wang M et al (2010) Rapid and direct conversion of graphite crystals into high—yielding, good—quality graphene by supercritical fluid exfoliation. Chem-A Eur J 16:6488–6494
Xu S, Xu Q, Wang N, Chen Z, Tian Q, Yang H, Wang K (2015) Reverse-micelle-induced exfoliation of graphite into graphene nanosheets with assistance of supercritical CO2. Chem Mater 27:3262–3272
Wang N, Wei F, Qi Y, Li H, Lu X, Zhao G, Xu Q (2014) Synthesis of strongly fluorescent molybdenum disulfide nanosheets for cell-targeted labeling. ACS Appl Mater Interfaces 6:19888–19894
Wang N, Xu Q, Xu S, Qi Y, Chen M, Li H, Han B (2015) High-efficiency exfoliation of layered materials into 2D nanosheets in switchable CO2/surfactant/H2O system. Sci Rep 5:16764
Thangasamy P, Sathish M (2016) Rapid, one-pot synthesis of luminescent MoS2 nanoscrolls using supercritical fluid processing. J Mater Chem C 4:1165–1169
Thangasamy P, Partheeban T, Sudanthiramoorthy S, Sathish M (2017) Enhanced superhydrophobic performance of BN-MoS2 heterostructure prepared via a rapid, one-pot supercritical fluid processing. Langmuir 33:6159–6166
Qi Y, Wang N, Xu Q, Li H, Zhou P, Lu X, Zhao G (2015) A green route to fabricate MoS2 nanosheets in water-ethanol-CO2. Chem Commun (Camb) 51:6726–6729
Wang Y, Zhou C, Wang W, Zhao Y (2013) Preparation of two dimensional atomic crystals BN, WS2, and MoS2 by supercritical CO2 assisted with ultrasound. Ind Eng Chem Res 52:4379–4382
Grossiord N, Loos J, Meuldijk J, Regev O, Miltner HE, Van Mele B, Koning CE (2007) Conductive carbon-nanotube/polymer composites: spectroscopic monitoring of the exfoliation process in water. Compos Sci Technol 67:778–782
Sun Y, Tang B, Huang W et al (2016) Preparation of graphene modified epoxy resin with high thermal conductivity by optimizing the morphology of filler. Appl Therm Eng 103:892–900
Xiao J, Choi D, Cosimbescu L, Koech P, Liu J, Lemmon JP (2010) Exfoliated MoS2 nanocomposite as an anode material for lithium ion batteries. Chem Mater 22:4522–4524
Li L, Xu J, Li G et al (2016) Preparation of graphene nanosheets by shear-assisted supercritical CO2 exfoliation. Chem Eng J 284:78–84
Liu L, Shen Z, Yi M, Zhang X, Ma S (2014) A green, rapid and size-controlled production of high-quality graphene sheets by hydrodynamic forces. RSC Adv 4:36464–36470
Li H, Zhang Q, Yap CCR, Tay BK, Edwin THT, Olivier A, Baillargeat D (2012) From bulk to monolayer MoS2: evolution of raman scattering. Adv Funct Mater 22:1385–1390
Qi Y, Xu Q, Wang Y, Yan B, Ren Y, Chen Z (2016) CO2-induced phase engineering: protocol for enhanced photoelectrocatalytic performance of 2D MoS2 nanosheets. ACS Nano 10:2903–2909
Joensen P, Frindt R, Morrison SR (1986) Single-layer MoS2. Mater Res Bull 21:457–461
Joensen P, Crozier E, Alberding N, Frindt R (1987) A study of single-layer and restacked MoS2 by X-ray diffraction and X-ray absorption spectroscopy. J Phys C: Solid State Phys 20:4043
Acknowledgements
This work was financially supported by the Science Foundation of China University of Petroleum, Beijing (No. 2462016YJRC007), the National Natural Science Foundation of China (Grant Nos. 21776308, 21576289), Science Foundation of China University of Petroleum, Beijing (Grant No. C201603), Science Foundation Research Funds Provided to New Recruitments of China University of Petroleum, Beijing (Grant No. 2462014QZDX01), and Thousand Talents Program.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Rights and permissions
About this article
Cite this article
Tian, X., Wu, J., Li, Q. et al. Scalable production of few-layer molybdenum disulfide nanosheets by supercritical carbon dioxide. J Mater Sci 53, 7258–7265 (2018). https://doi.org/10.1007/s10853-018-2053-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10853-018-2053-6