Chemometric approach to study the influence of synthesis parameters on the size of CdTe quantum dots obtained from aqueous solutions

Emilio Navarrete S., Javier Román S., Víctor Rojas C., Rodrigo Henríquez N., Ricardo Schrebler G., Ricardo Córdova O., MANUEL ANDRES BRAVO MERCADO, Eduardo Muñoz C.

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This study reports CdTe quantum dots synthesis in an aqueous medium using cadmium chloride and sodium tellurite as precursors and sodium borohydride and mercaptosuccinic acid as reducing and capping agents, respectively. The synthesis process was optimized through experimental design, and particle characterization was carried out by UV-Vis spectroscopy and molecular fluorescence. In the first stage, a factorial design was used to establish the significance of each of the synthesis variables; i.e., the temperature, pH, reaction time and precursor molar ratios. In the second stage, a multivariate design was constructed to relate the synthesis variables with the maximum absorbance wavelengths, which allowed for predictions of the diameters of the CdTe quantum dots, which were compared with direct measurements of the particles analyzed by high-resolution transmission electron microscopy, HR-TEM and X-ray diffraction, XRD. Finally, there is a brief discussion regarding the existing models predicting particle sizes.

Original languageEnglish
Pages (from-to)5103-5110
Number of pages8
JournalArabian Journal of Chemistry
Volume12
Issue number8
DOIs
StatePublished - Dec 2019
Externally publishedYes

Keywords

  • Cadmium telluride
  • Experimental design
  • Quantum dots
  • Synthesis and characterization

Fingerprint Dive into the research topics of 'Chemometric approach to study the influence of synthesis parameters on the size of CdTe quantum dots obtained from aqueous solutions'. Together they form a unique fingerprint.

Cite this