PbS nanostructures synthesized via surfactant assisted mechanochemical route |
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Authors: | Peter Baláž Parviz Pourghahramani Erika Dutková Martin Fabián Jaroslav Kováč Alexander Šatka |
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Institution: | (1) Institute of Geotechnics, Slovak Academy of Sciences, 043 53 Kosice, Slovakia;(2) Mining Engineering Department, Sahand University of Technology, P.O.Box 51, 335/1996 Tabriz, Iran;(3) Department of Microelectronics, Slovak University of Technology and International Laser Centre, 812 19 Bratislava, Slovakia |
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Abstract: | PbS nanocrystals using surfactant assisted mechanochemical route has been successfully prepared. The methods of XRD, SEM,
surface area and particle size measurements were used for nanocrystals characterization. The XRD patterns confirmed the presence
of galena PbS (JCPDS 5–592) whatever treatment conditions were applied. The strong observable peaks indicate the highly crystalline
nature in formation of PbS nanostructures where preferential crystal growth in the (200) direction after chelating agent (EDTANa2•2H2O) addition has been observed. The mean volume weighted crystallite size 4.9 nm and 35 nm has been calculated from XRD data
using Williamson-Hall method for PbS synthesized without and/or with chelating agent, respectively corresponding with surface
weighted crystallites sizes of 2.9 and 18.8 nm. The sample prepared without surfactant yields the smaller crystallites and
the higher microstrain compared with surfactant assisted synthesis. The obtained results illustrate a possibility to manipulate
crystal morphology by combining effect of milling and surfactant application.
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Keywords: | Lead sulphide Mechanochemistry Nanostructure Surfactant |
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