Facile synthesis of molybdenum disulfide micro-spheres and the tribological properties in liquid paraffin
In this paper, well-dispersed molybdenum disulfide micro-spheres with the diameters of 0.5～1.5 μm have been successfully synthesized via the extraction-solvothermal method. The + 2 2 MoO ions were extracted into gasoline by the extractant Cyanex 302 (di- (2, 4, 4- trimethylpentyl) monothiophosphinic acid) firstly, then the extracted solution was given solvothermal treatment in a Teflon-lined stainless autoclave at 150 ℃ for 24 h to synthesize MoS2 micro-spheres. The obtained MoS2 sample was characterized by (X-ray powder diffraction) XRD, (energy-dispersive X-ray spectra) EDS, (scanning electron microscopy) SEM, (transmission electron microscopy) TEM and (high resolution transmission electron microscopy) HRTEM, respectively. Results indicated that Cyanex 302 acted as phase transferring agent, reductant, sulfur source and morphology-controlling agent in the whole procedure. The reaction mechanism was proposed to explain the formation of the micro-spheres in organic solvent. Moreover, the tribological properties of liquid paraffin (LP) containing the as-prepared MoS2 micro-spheres were also evaluated on a four-ball machine and the chemical states of some typical elements on the worn surfaces were examined with an X-ray photoelectron spectroscopy (XPS), showing that the obtained MoS2 product was an excellent oil additive in LP with good anti-wear and friction-reducing properties.
Molybdenum disulfide Micro-spheres Extraction-solvothermal method Cyanex 302 Tribological properties improve the lubricating properties, the preparation of
石华强 周晓东 张绍琳 傅洵 焦奎
青岛科技大学化学与分子工程学院,山东青岛,266042 青岛科技大学化学与分子工程学院,山东青岛,266042;青岛科技大学化学与分子工程学院,山东青岛,266042
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）