Nanoparticles synthesis of tungsten disulfide via AOT-based microemulsions |
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| Authors: | SM Ghoreishi SS Meshkat M Ghiaci AA Dadkhah |
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| Affiliation: | 1. College of Chemistry, Chemical Engineering and Materials Science & Key Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, SIP, Suzhou 215123, China;2. College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China;3. Nanocom Inc., Suzhou 215011, China;4. Department of Chemical Engineering, University of Waterloo, Waterloo, ON, N2L 3G1 Canada |
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| Abstract: | The tungsten disulfide (WS2) nanoparticles (most probably inorganic fullerene (IF)) with a narrow size distribution were synthesized by a reverse micelle technique for the first time. The particle size was controlled by varying water-to-surfactant molar ratio (W0), aging time and reagent concentration. The synthesized WS2 nanoparticles were characterized by zetasizer, UV–visible spectrophotometers and transmission electron microscopy (TEM). The WS2 nanoparticles with particle diameter size of 7–12 nm were obtained via 24 h aging time. The particle size was controlled by changing the aging time and molar ratio of water/surfactant. Doubling W0 increased the amount and particle size of WS2 by 22 and 26%, respectively. The effect of aging time in the range of 6–24 h was investigated and the complete disappearance of yellowish color at 24 h resulted in an optically clear solution, which was the indication of WS2 formation with 100% conversion of reactant ((NH4)2WS4) in the batch reactor. |
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