10.1186/2193-8865-3-10

Effect of 2-mercaptoethanol as capping agent on ZnS nanoparticles: structural and optical characterization

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  • Abbas Rahdar*1,
  1. Department of Physics, Faculty of Science, University of Zabol, Zabol, 98615538, IR
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Published in Issue 15-04-2013

How to Cite

Rahdar, A. (2013). Effect of 2-mercaptoethanol as capping agent on ZnS nanoparticles: structural and optical characterization. Journal of Nanostructure in Chemistry, 3(1 (December 2013). https://doi.org/10.1186/2193-8865-3-10
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Abstract

Abstract In this work, we report the effect of a capping agent on the structural and optical properties of nanocrystalline ZnS particles, which have been synthesized by co-precipitation method. The structural properties of ZnS nanoparticles have been characterized by X-ray diffraction (XRD) analysis. The XRD patterns show a hexagonal structure in the nanoparticles. The mean crystallite size calculated from the XRD patterns has been found to be in the range of 1.80 to 2.45 nm with the increase in molar concentration of the capping agent. Absorption spectra have been obtained using a UV-vis spectrophotometer to find the optical direct band gap. We also found that optical band gap ( E g ) increases with the increase in molar concentration of the capping agent. This behavior is related to size quantization effect due to the small size of the particles.

Keywords

  • ZnS nanoparticles,
  • Chemical co-precipitation method,
  • Capping agent,
  • Optical band gap
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