Titre :	Sol-gel synthesis of CaFe1-xCuxO3 perovskite for photocatalytic application
Type de document :	texte imprimé
Auteurs :	Ilyas Boudjadi, Auteur ; Khelifa Haddadi, Directeur de thèse
Année de publication :	2022
Importance :	1 vol (80 f.)
Format :	29 cm
Langues :	Anglais (eng)
Catégories :	Physique
Mots-clés :	Physique
Index. décimale :	530-Physique
Résumé :	In this work, CaFe1-xCuxO3 (where x ranged from 0 to 0.1) powders were successfully synthesized by the sol-gel method employing metal chloride as cations precursors and water as a solvent to study the effect of substitution in the B site on the structural characteristics of perovskite. Physico-chemical characterizations were inducted using different characterization techniques such as X-ray diffraction, FTIR spectroscopy, TGA/DTA analysis, and SEM. The study by X-ray diffraction allowed us to identify the formation of the pure CaFeO3 perovskite phase with an orthorhombic structure alongside the presence of detectable secondary phases. Infrared spectroscopy (FTIR) analysis showed that for the CaFe1-xCuxO3 system compositions, a broad characteristic band of absorption observed around 560 cm-1 was attributed to the Fe-O stretching vibration. The SEM images have shown high polydispersity in the sizes and shapes of particles for pure and doped 4% samples, and highly porous architecture for the samples doped 7% and 10% respectively. In the end, the adsorption of methylene blue on our powders was studied by applying different kinetic models. We found that (MB) adsorption on the synthesized samples is best described by the pseudo-second order model.
Côte titre :	MAPH/0541
En ligne :	https://drive.google.com/file/d/1ukoXS2Ykyal7EGJcyF7GLPaDZISBcMkE/view?usp=shari [...]
Format de la ressource électronique :	pdf

Sol-gel synthesis of CaFe1-xCuxO3 perovskite for photocatalytic application [texte imprimé] / Ilyas Boudjadi, Auteur ; Khelifa Haddadi, Directeur de thèse . - 2022 . - 1 vol (80 f.) ; 29 cm.
Langues : Anglais (eng)

Catégories :	Physique
Mots-clés :	Physique
Index. décimale :	530-Physique
Résumé :	In this work, CaFe1-xCuxO3 (where x ranged from 0 to 0.1) powders were successfully synthesized by the sol-gel method employing metal chloride as cations precursors and water as a solvent to study the effect of substitution in the B site on the structural characteristics of perovskite. Physico-chemical characterizations were inducted using different characterization techniques such as X-ray diffraction, FTIR spectroscopy, TGA/DTA analysis, and SEM. The study by X-ray diffraction allowed us to identify the formation of the pure CaFeO3 perovskite phase with an orthorhombic structure alongside the presence of detectable secondary phases. Infrared spectroscopy (FTIR) analysis showed that for the CaFe1-xCuxO3 system compositions, a broad characteristic band of absorption observed around 560 cm-1 was attributed to the Fe-O stretching vibration. The SEM images have shown high polydispersity in the sizes and shapes of particles for pure and doped 4% samples, and highly porous architecture for the samples doped 7% and 10% respectively. In the end, the adsorption of methylene blue on our powders was studied by applying different kinetic models. We found that (MB) adsorption on the synthesized samples is best described by the pseudo-second order model.
Côte titre :	MAPH/0541
En ligne :	https://drive.google.com/file/d/1ukoXS2Ykyal7EGJcyF7GLPaDZISBcMkE/view?usp=shari [...]
Format de la ressource électronique :	pdf