Synthesis and Characterization of ZnS Nanoparticles and Effects of Nanoparticle Size on Optical Properties

Authors

  • Maria Elena Aguilar Jauregui Instituto Politécnico Nacional
  • José Abraham Balderas López Instituto Politécnico Nacional
  • Eduardo San Martín-Martinez Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada-Legaria

DOI:

https://doi.org/10.13053/cys-26-2-4292

Keywords:

Nanomaterials, nanoparticles, quantum dots, transition metal, lanthanide ions, passivation agent, luminescence

Abstract

This research presents a methodology for obtaining ZnS nanoparticles (NZnS). Doped with transition metal ions (MnCl2) and use of rare earth EuCl3 to improve their photoluminescence properties. Semiconductor nanoparticles were synthesized using the nanoprecipitation technique. The characterization of the ZnS nanoparticles was carried out using Dynamic Light Scattering (DLS), Powder X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), High-Resolution Transmission Electron Microscopy (HRTEM), and Luminescence Spectroscopy (PL) technique. A cubic zinc crystalline structure could be observed considering the position and intensity of the characteristic peaks in the XRD pattern.  Also, taking the width at half height of the main peak and using the Debye-Scherrer equation, it is possible to obtain the average size of the nanoparticles, which for the samples analyzed was between 2-4 nm. SEM micrograph revealed a morphology with aggregated nanoparticles. High-Resolution Transmission Electron Microscopy showed the crystalline structure of the doped nanomaterial. PL characterization showed an increase in the luminescent intensity of doped NZnS compared to NZnS doped with the lowest concentration of the coating agent. These results confirm the effectiveness of the methodology for possible application in bioimaging diagnosis of PL in nanomedicine.

Author Biographies

Maria Elena Aguilar Jauregui, Instituto Politécnico Nacional

Centro de Investigación en Computación

José Abraham Balderas López, Instituto Politécnico Nacional

Unidad Profesional Interdisciplinaria de Biotecnología

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Published

2022-06-28

Issue

Vol. 26 No. 2 (2022): Emerging Issues and Applications of Fuzzy Systems, Neural Networks and Metaheuristics (Castillo, Melin, Montiel, Valdez)

Section

Articles

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