Síntesis y caracterización de Ce1/2Cu3Ti4O12 sol-gel asistida por ácido cítrico

Sergio Eduardo Negrete-Durán; Edgar Giovanny Villabona-Leal; Javier Alanís-Pérez; Hugo Ricardo Navarro-Contreras; Mildred  Quintana-Ruíz; Hiram Joazet Ojeda-Galván

doi:10.29057/icbi.v9iEspecial2.8015

Authors

Sergio Eduardo Negrete-Durán Universidad Autónoma de San Luis Potosí https://orcid.org/0000-0003-1575-4801
Edgar Giovanny Villabona-Leal Universidad Autónoma de San Luis Potosí https://orcid.org/0000-0002-5464-814X
Javier Alanís-Pérez Universidad Autónoma de San Luis Potosí https://orcid.org/0000-0001-8457-7584
Hugo Ricardo Navarro-Contreras Universidad Autónoma de San Luis Potosí https://orcid.org/0000-0003-0333-0024
Mildred Quintana-Ruíz Universidad Autónoma de San Luis Potosí https://orcid.org/0000-0002-7036-8658
Hiram Joazet Ojeda-Galván Universidad Autónoma de San Luis Potosí https://orcid.org/0000-0001-8521-294X

DOI:

https://doi.org/10.29057/icbi.v9iEspecial2.8015

Keywords:

Ce1/2Cu3Ti4O12, Double Peorvskites, Sol-Gel, X-Ray Diffraction, Rare Earths

Abstract

In the present work, a synthesis methodology was made to produce Ce_1/2Cu₃Ti₄O₁₂ double perovskites by citric acid assisted Sol-Gel reaction, producing a metal-organic precursor with the stoichiometrically necessary ions to form the structure. Calcinations were made at different temperatures, varying from 670 °C to 1070 ° to optimize the thermal treatment. A two-cycles calcination at 1070 °C were standardized. X-Ray Diffraction (XRD), HRTEM, Infrared Spectroscopy (FTIR-ATR) and Diffuse Reflectance UV-Vis-NIR Spectroscopy were made to characterize the samples. XRD Diffractograms were analyzed using a Rietveld Refinement to identify the phases present in the samples, FTIR-ATR studies showed information about metallic bonds in the temperature evolution. Tauc plot method revealed a correlation between the presence of the phase and the band gap in every sample, associating a band gap with the Ce_1/2Cu₃Ti₄O₁₂structure.

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References

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