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Zeitschrift für Physikalische Chemie

International journal of research in physical chemistry and chemical physics

Editor-in-Chief: Rademann, Klaus


IMPACT FACTOR 2018: 0.975
5-year IMPACT FACTOR: 1.021

CiteScore 2018: 1.20

SCImago Journal Rank (SJR) 2018: 0.327
Source Normalized Impact per Paper (SNIP) 2018: 0.391

Online
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2196-7156
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Volume 232, Issue 1

Issues

Considerations about the Dependence of PEGylated ZnS Nanoparticles Properties on the Synthesis Method

Anca Dumbrava
  • Corresponding author
  • Ovidius University of Constanta, Department of Chemistry and Chemical Engineering, 124 Mamaia Blvd., Constanta 900527, Romania
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/ Daniela Berger
  • University Politehnica of Bucharest, Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Polizu Street 1-7, Bucharest 011061, Romania
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/ Gabriel Prodan
  • Ovidius University of Constanta, Electron Microscopy Laboratory, 124 Mamaia Blvd., Constanta 900527, Romania
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/ Florin Moscalu
  • Ovidius University of Constanta, Department of Physics, 124 Mamaia Blvd., Constanta 900527, Romania
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/ Aurel Diacon
  • University Politehnica of Bucharest, Department of Bioresources and Polymer Science, Polizu Street 1-7, Bucharest 011061, Romania
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Published Online: 2017-05-25 | DOI: https://doi.org/10.1515/zpch-2017-0005

Abstract

We studied the dependence between properties and synthesis method for PEGylated ZnS nanoparticles. Thus, we proposed the PEGylation of ZnS nanopowder, in non-aqueous medium, by a facile one-pot synthesis in very mild conditions, as an alternative for the chemical precipitation of PEGylated ZnS in an aqueous solution, and we compared the properties of zinc sulfide obtained by both methods. The structure and morphology of PEGylated ZnS nanopowders were investigated by X-ray diffraction and transmission electron microscopy, and the FTIR spectra confirmed the PEGylation of ZnS nanoparticles. The values for band gap energy are in good accordance with the quantum confinement effect for nanocrystals. The mean dimension of particles was calculated, on the basis of UV–Vis spectra, by using the Brus equation and it is in good agreement with the crystallites size, determined from X-ray diffraction. The photocatalytic properties of synthesized nanopowders were tested in the degradation of Congo red azo dye, demonstrating a faster bleaching of dye in the presence of PEGylated ZnS prepared in non-aqueous medium. The photoluminescence properties are also dependent on the synthesis method and can be correlated with the surface modifications by PEG.

Keywords: band gap energy; optical properties; PEG-capped zinc sulfide; photocatalytic activity; photoluminescence spectra; II–VI semiconductor

References

About the article

Received: 2017-01-05

Accepted: 2017-04-16

Published Online: 2017-05-25

Published in Print: 2017-12-20


Citation Information: Zeitschrift für Physikalische Chemie, Volume 232, Issue 1, Pages 61–77, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, DOI: https://doi.org/10.1515/zpch-2017-0005.

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