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Kinetics of Oxygen Adsorption on Zns Nanoparticles Synthesized by Precipitation Process Publisher



Ahmadi R1 ; Sadrnezhad SK2 ; Zangeneh RN3 ; Oghabian MA4
Authors
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Authors Affiliations
  1. 1. Department of Materials Engineering, Imam Khomeini International University, Qazvin, Iran
  2. 2. Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
  3. 3. School of Chemistry, University College of Science, University of Tehran, Tehran, Iran
  4. 4. Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran

Source: Materials Science- Poland Published:2016


Abstract

ZnS nanoparticles were synthesized through a one-step precipitation process. Effect of time and temperature on the formation reaction was investigated. The synthesized samples were characterized by X-ray diffraction (XRD), ultraviolet (UV) visible absorption and photoluminescence (PL) spectrophotometry. Based on XRD and UV-Vis data, the particles produced at 70 °C had a mean particle size of about 5 nm. Increasing time and temperature of the synthesis reaction resulted in photoluminescence intensification. PL spectroscopy helped understanding the adsorption kinetics of oxygen on ZnS nanoparticles during the precipitation synthesis process. Fabrication of ZnS structures with appropriate oxygen adsorption capacity was suggested as a means of PL emission intensity control. © 2016 Wroclaw University of Technology.