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Title: Nanoparticles synthesis of tungsten disulfide via AOT-based microemulsions

Abstract

Graphical abstract: A controlled synthesis of WS2 nanoparticles (most probably inorganic fullerene (IF)) via microemulsion was applied for the first time to prepare WS2 (7–12 nm) by acidification of the water cores of the AOT reverse microemulsion. Highlights: ► An innovative reverse microemulsion technique was developed for WS{sub 2} synthesis. ► WS{sub 2} nanoparticles were obtained with narrow size distribution in range of 7–12 nm. ► Operating cost of microemulsion was lower in contrast to quartz reactor method. ► WS{sub 2} morphology could be controlled to obtain highly active and selective catalysts. ► Lower size of WS{sub 2} in this study overcomes the shortcoming of quartz reactor method. -- Abstract: The tungsten disulfide (WS{sub 2}) 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 (W{sub 0}), aging time and reagent concentration. The synthesized WS{sub 2} nanoparticles were characterized by zetasizer, UV–visible spectrophotometers and transmission electron microscopy (TEM). The WS{sub 2} 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 molarmore » ratio of water/surfactant. Doubling W{sub 0} increased the amount and particle size of WS{sub 2} 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 WS{sub 2} formation with 100% conversion of reactant ((NH{sub 4}){sub 2}WS{sub 4}) in the batch reactor.« less

Authors:
 [1];  [2];  [1]
  1. Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111 (Iran, Islamic Republic of)
  2. Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111 (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22215109
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 6; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; DISTRIBUTION; FULLERENES; INORGANIC COMPOUNDS; MICROEMULSIONS; NANOSTRUCTURES; PARTICLE SIZE; PARTICLES; SPECTROPHOTOMETERS; SURFACTANTS; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; TUNGSTEN SULFIDES

Citation Formats

Ghoreishi, S.M., E-mail: ghoreshi@cc.iut.ac.ir, Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Meshkat, S. S., Department of Chemical Engineering, Urmia University of Technology, Urmia 57155-419, Ghiaci, M., and Dadkhah, A. A. Nanoparticles synthesis of tungsten disulfide via AOT-based microemulsions. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.02.042.
Ghoreishi, S.M., E-mail: ghoreshi@cc.iut.ac.ir, Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Meshkat, S. S., Department of Chemical Engineering, Urmia University of Technology, Urmia 57155-419, Ghiaci, M., & Dadkhah, A. A. Nanoparticles synthesis of tungsten disulfide via AOT-based microemulsions. United States. doi:10.1016/J.MATERRESBULL.2012.02.042.
Ghoreishi, S.M., E-mail: ghoreshi@cc.iut.ac.ir, Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Meshkat, S. S., Department of Chemical Engineering, Urmia University of Technology, Urmia 57155-419, Ghiaci, M., and Dadkhah, A. A. Fri . "Nanoparticles synthesis of tungsten disulfide via AOT-based microemulsions". United States. doi:10.1016/J.MATERRESBULL.2012.02.042.
@article{osti_22215109,
title = {Nanoparticles synthesis of tungsten disulfide via AOT-based microemulsions},
author = {Ghoreishi, S.M., E-mail: ghoreshi@cc.iut.ac.ir and Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111 and Meshkat, S. S. and Department of Chemical Engineering, Urmia University of Technology, Urmia 57155-419 and Ghiaci, M. and Dadkhah, A. A.},
abstractNote = {Graphical abstract: A controlled synthesis of WS2 nanoparticles (most probably inorganic fullerene (IF)) via microemulsion was applied for the first time to prepare WS2 (7–12 nm) by acidification of the water cores of the AOT reverse microemulsion. Highlights: ► An innovative reverse microemulsion technique was developed for WS{sub 2} synthesis. ► WS{sub 2} nanoparticles were obtained with narrow size distribution in range of 7–12 nm. ► Operating cost of microemulsion was lower in contrast to quartz reactor method. ► WS{sub 2} morphology could be controlled to obtain highly active and selective catalysts. ► Lower size of WS{sub 2} in this study overcomes the shortcoming of quartz reactor method. -- Abstract: The tungsten disulfide (WS{sub 2}) 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 (W{sub 0}), aging time and reagent concentration. The synthesized WS{sub 2} nanoparticles were characterized by zetasizer, UV–visible spectrophotometers and transmission electron microscopy (TEM). The WS{sub 2} 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 W{sub 0} increased the amount and particle size of WS{sub 2} 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 WS{sub 2} formation with 100% conversion of reactant ((NH{sub 4}){sub 2}WS{sub 4}) in the batch reactor.},
doi = {10.1016/J.MATERRESBULL.2012.02.042},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 6,
volume = 47,
place = {United States},
year = {2012},
month = {6}
}