Preparation and characterisation of ball-like MoS₂ nanoparticles

Abstract

Molybdenum sulphide (MoS x ) particles were prepared from Na 2 MoO 4 and CH 3 CSNH 2 by the quick homogenous precipitation method within 5 min in alcohol-water solution at 82uC and normal pressure. The prepared MoS x particles were studied by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM). The results showed that the as prepared product was ball-like amorphous MoS x (x53 . 20) nanoparticles. The resultant amorphous ball-like MoS x nanoparticles were then calcined under hydrogen flow at a selected temperature for 50 min. The results of XRD, TEM and HRTEM confirmed that the ball-like MoS 2 nanoparticles with fullerene structure were prepared by calcining the amorphous MoS x nanoparticles at 780uC. The resultant ball-like nano-MoS 2 particles were transformed into polyhedron like nano-MoS 2 particles as the calcining temperature was increased to 960uC.

Formation of an adsorption film of MoS2 nanoparticles and dioctyl sebacate on a steel surface for alleviating friction and wear

“…The XRD pattern of the resultant MoS 2 was similar to that of the nano-MoS 2 reported in literature [18,35]. These findings confirmed that the nano-MoS 2 was successfully synthesized.…”

The Effect of Morphology on the Tribological Properties of MoS2 in Liquid Paraffin

“…In previous articles, a quick precipitation method was designed to prepare molybdenum trisulfide (MoS 3 ) precursors in different shapes from sodium molybdate and sulfides [19,20]. Heating the precursors could conveniently produce a hollow ball-like or slice-like nano-MoS 2 at 780°C in H 2 .…”

Aqueous Medium Synthesis Route for Randomly Stacked Molybdenum Disulfide

“…The same group has also reported the formation of single layered MoS 2 with short fringes, when processed in presence of an organic surfactant in the reaction mixture [28]. Similarly, Hu et al [29] have prepared the ball-like MoS 2 nanoparticles on calcining the amorphous molybdenum sulfide (MoS ), obtained through precipitation from the solution of Na 2 MoO 4 and thioacetamide in water and alcohol. Recently, Wu et al [30] have reported the preparation of poorly crystalline MoS 2 nanospheres through calcination of MoS 3 precursor obtained through precipitation in an aqueous medium in presence of polyethylene glycol.…”