Abstract
Chain-like MoS2 assemblies consisting of hexagonal MoS2 nanoparticles (20–60 nm) have been successfully synthesized in a Triton X-100/cyclohexane/hexanol/water W/O reverse microemulsion in the presence of (NH4)2MoS4 as the molybdenum source and NH2OH·HCl as the reducing agent. The products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and UV-vis diffuse reflectance absorption spectra. The influence of synthetic parameters such as acidity, water/oil ratio (ω0), aging time and annealing temperature on the formation of MoS2 assemblies was investigated. TEM analysis showed that these synthetic factors played important roles in controlling the size of MoS2 nanoparticles and the length of the chain-like MoS2 assemblies. XRD analysis indicated that the well-crystallized MoS2 nanoparticles could be obtained by annealing the precursors at 700°C for 2 h under a flow of N2 atmosphere. In addition, the as-prepared chain-like MoS2 nanoparticles exhibited excellent photocatalytic H2 activity in Ru(bpy) 2+3 -MoS2-H2A three-component molecular systems under visible light irradiation.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Farag H, Al-Megren H. Textural characterizations and catalytic properties of quasispherical nanosized molybdenum disulfide. J Colloid Interface Sci, 2009, 332: 425–431
Li X L, Li Y D. MoS2 nanostructures: Synthesis and electrochemical Mg2+ intercalation. J Phys Chem B, 2004, 108: 13893–13900
Wang Q, Li J H. Facilitated lithium storage in MoS2 overlayers supported on coaxial carbon nanotubes. J Phys Chem C, 2007, 111: 1675–1682
Yang T T, Feng X, Tang Q L, et al. A facile method to prepare MoS2 with nanolameller-like morphology. J Alloys Compd, 2011, 509: 236–238
Zong X, Yan H J, Wu G P, et al. Enhancement of photocatalytic H2 evolution on CdS by loading MoS2 as cocatalyst under visible light irradiation. J Am Chem Soc, 2008, 130: 7176–7177
Zong X, Na Y, Wen F Y, et al. Visible light driven H2 production in molecular systems employing colloidal MoS2 nanoparticles as catalyst. Chem Commun, 2009, 4536-4538
Coehoorn R, Haas C, Dijkstra J, et al. Electronic structure of MoSe2, MoS2, and WSe2. I. Band-structure calculations and photoelectron spectroscopy. Phys Rev B, 1987, 35: 6195–6202
Pourabbas B, Jamshidi B. Preparation of MoS2 nanoparticles by a modified hydrothermal method and the photo-catalytic activity of MoS2/TiO2 hybrids in photo-oxidation of phenol. Chem Eng J, 2008, 138: 55–62
Zhan J H, Zhang Z D, Qian X F, et al. Solvothermal synthesis of nanocrystalline MoS2 from MoO3 and elemental sulfur. J Solid State Chem, 1998, 141: 270–273
Mdeleni M M, Hyeon T, Suslick K S. Sonochemical synthesis of nanostructured molybdenum sulfide. J Am Chem Soc, 1998, 120: 6189–6190
Boakye E, Radovic L R, Osseo-Asare K. Microemulsion-mediated synthesis of nanosized molybdenum sulfide particles. J Colloid Interface Sci, 1994, 163: 120–129
Chu G, Bian G, Fu Y, et al. Preparation and structural characterization of nano-sized amorphous powders of MoS2 by γ-irradiation method. Mater Lett, 2000, 43: 81–86
Wilcoxon J P, Newcomer P P, Samara G A. Synthesis and optical properties of MoS2 and isomorphous nanoclusters in the quantum confinement regime. J Appl Phys, 1997, 81: 7934–7944
Wilcoxon J P, Samara G A. Strong quantum-size effects in a layered semiconductor: MoS2 nanoclusters. Phys Rev B, 1995, 51: 7299–7302
Chikan V, Kelley D F. Size-dependent spectroscopy of MoS2 nanoclusters. J Phys Chem B, 2002, 106: 3794–3804
Xiong Y J, Xie Y, Li Z Q, et al. Micelle-assisted fabrication of necklace-shaped assembly of inorganic fullerene-like molybdenum disulfide nanospheres. Chem Phys Lett, 2003, 382: 180–185
Liu C G, Chai Y M, Zhao H J, et al. PRC Patent, CN1557697, 2004-02-13
Joensen P, Frindt R F, Morrison S R. Single-layer MoS2. Mater Res Bull, 1986, 21: 457–461
Li Q, Li M, Chen Z Q, et al. Simple solution route to uniform MoS2 particles with randomly stacked layers. Mater Res Bull, 2004, 39: 981–986
Pileni M P. Nanosized particles made in colloidal assemblies. Langmuir, 1997, 13: 3266–3276
Lopez-Quintela M A. Synthesis of nanomaterials in microemulsions: Formation mechanisms and growth control. Curr Opin Colloid Interface Sci, 2003, 8: 137–144
Zhang Z J, Zhang J, Xue Q J. Synthesis and characterization of a molybdenum disulfide nanocluster. J Phys Chem, 1994, 98: 12973–12977
Kiwi J, Gratzel M. Hydrogen evolution from water induced by visible light mediated by redox catalysis. Nature, 1979, 281: 657–658
Author information
Authors and Affiliations
Corresponding author
Additional information
This article is published with open access at Springerlink.com
Rights and permissions
This article is published under an open access license. Please check the 'Copyright Information' section either on this page or in the PDF for details of this license and what re-use is permitted. If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and re-use information, please contact the Rights and Permissions team.
About this article
Cite this article
Liu, M., Li, X., Xu, Z. et al. Synthesis of chain-like MoS2 nanoparticles in W/O reverse microemulsion and application in photocatalysis. Chin. Sci. Bull. 57, 3862–3866 (2012). https://doi.org/10.1007/s11434-012-5339-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11434-012-5339-0