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4893069 
Journal Article 
Synthesis of tungsten nanoparticles by reverse micelle method 
Khani, AH; Rashidi, AM; Kashi, G 
2017 
Yes 
Journal of Molecular Liquids
ISSN: 0167-7322 
Elsevier B.V. 
241 
897-903 
English 
WOS:000407535000108 
Tungsten nanoparticles have been successfully synthesized via reverse micelle method in two micellar systems include n-hexane-SDS (Sodium dodecyl sulfate) and Cyclohexane-TritonX-100. The inter-micellar space has been used for the reaction of sodium tungstate with two reducing agents containing Iron(II) chloride and sodium borohydride. The effects of parameters such as temperature, pH, micelle type, water to surfactant molar ratio (K omega), annealing and type of the co-surfactant on the reduction process and size of the particles were investigated. The as-synthesized and heat treated products were characterized by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and X-ray diffraction. SEM analyze showed spherical tungsten nanoparticles with narrow size distribution and size (13 nm) and both alpha & structures of tungsten were observed in XRD patterns. (C) 2017 Elsevier B.V. All rights reserved. 
Tungsten nanoparticles; Reverse micelle; n-Hexane-SDS; Cyclohexane-TritoneX100