7th IMRMPT

Abstract

Abstract information

English title:	Mesoporous PrCoO3 doped Sr (0.1<x<0.5) nanostructures: Synthesis, and structural and optical characterization
Spanish title:	Nanoestructuras mesoporosas de Sr dopado con PrCoO3 (0.1<x<0.5): S�ntesis y caracterizaci�n estructural y �ptica
English abstract:	Mesoporous nanostructures of the Pr1-xSrxCoO3 system were synthesized via sol gel using Cetyltrimethylammonium bromide (CTAB), as surfactant, and two different solvents, ethanol and ethylene glycol. To determine the effect of the synthesis process on the characteristics of the nanostructures, these were characterized using FTIR and UV-Vis diffuse reflectance (DRS) spectroscopies, photoluminescence, X-ray diffraction (XRD), nitrogen adsorption-desorption isotherms and transmission electron microscopy (TEM). The Pr1-xSrxCoO3 powders were found to have nanometric-sized monocrystalline primary particles (50-100 nm) and their adsorption-desorption isotherms showed the type H1 hysteresis loops characteristic of mesoporous solids, a nature confirmed by the TEM micrographs. The obtained mesoporous Pr1-xSrxCoO3 (0.1<x<0.5) nanostructures showed changes in their electric behavior. The electrical resistivity curves as a function of temperature showed a semiconductor behavior was present which depended on the Sr content.
Spanish abstract:	Se sintetizaron nanoestructuras mesoporosas del sistema Pr1-xSrxCoO3 (0.1<x<0.5) v�a sol gel utilizando bromuro de cetiltrimetilamonio (CTAB), como surfactante, y dos solventes diferentes, etanol y etilenglicol. Para determinar el efecto del proceso de s�ntesis sobre las caracter�sticas de las nanoestructuras, estas se caracterizaron mediante espectroscop�as de reflectancia difusa (DRS) FTIR y UV-Vis, fotoluminiscencia, difracci�n de rayos X (XRD), isotermas de adsorci�n-desorci�n de nitr�geno y microscop�a electr�nica de transmisi�n. (TEM). Se encontr� que los polvos de Pr1-xSrxCoO3 ten�an part�culas primarias monocristalinas de tama�o nanom�trico (50-100 nm) y sus isotermas de adsorci�n-desorci�n mostraban los bucles de hist�resis tipo H1 caracter�sticos de los s�lidos mesoporosos, una naturaleza confirmada por las micrograf�as TEM. Las nanoestructuras mesoporosas Pr1-xSrxCoO3 (0.1<x<0.5) obtenidas mostraron cambios en su comportamiento el�ctrico. Las curvas de resistividad el�ctrica en funci�n de la temperatura mostraron un comportamiento semiconductor que depend�a del contenido de Sr.
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Authors

Name	Institution	Email
Andrea Moreno	Fundaci�n Universitaria de Popay�n	jakanem@hotmail.com
Carol Aguilar	Universidad Del Valle- Universidad del Cauca	carola@unicauca.edu.co

Presentation

Room:	Principal Room
Date:	June 8, 2023
Hour:	09:20 - 09:40

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7^th IMRMPT
Seventh International Meeting for Researchers in Materials and Plasma Technology

Previous editions:

        1st IMRMPT 2011
        2nd IMRMPT 2013
        3rd IMRMPT 2015
        4th IMRMPT 2017
        5th IMRMPT 2019
        5+1 IMRMPT 2021

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