University Sétif 1 FERHAT ABBAS Faculty of Sciences
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Auteur Racha Selmi |
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Ajouter le résultat dans votre panier Affiner la rechercheCharacterization of new ionic-liquid and solid materials, study of their structural and electrical properties and investigation of corrosion and inhibition activities. / Racha Selmi
Titre : Characterization of new ionic-liquid and solid materials, study of their structural and electrical properties and investigation of corrosion and inhibition activities. Type de document : document électronique Auteurs : Racha Selmi, Auteur ; Riadh Bourzami, Directeur de thèse Editeur : Setif:UFA Année de publication : 2024 Importance : 1 vol (29 f.) Format : 29 cm Langues : Anglais (eng) Catégories : Thèses & Mémoires:Physique Mots-clés : Physique Index. décimale : 530 - Physique Résumé :
This work reports the study of the structural and physical chemical properties of some synthetized ionic liquids and ionic hybrid materials. The structures have been studied experimentally by single crystal XRD. The IR spectroscopy results of ionic liquids were confirmed and explained via DFT calculations, which a good matching was found. In addition, the DFT calculates on the ionic liquids, the orbitals, partial charges and the MEP, discussing through these lasts the reactivity and the stability of the studied compounds. The corrosion inhibition of the ionic liquids and hybrid materials was studied experimentally by the method of the weight loss measurements. Furthermore, the optoelectronic properties have been studied experimentally by UV-Visible spectroscopy, while the electronic-transport property has been studied adopting the method of the carbon past electrode (CPE), and the measurements were performed by electrochemical way.Note de contenu : Sommaire
Introduction
Chapter I Bibliography
1) Definition and classification of hybrid materials ............................................................ 4
a) Definition ..................................................................................................................... 4
b) Classification ............................................................................................................... 4
2) Common hybrids families ............................................................................................... 5
a) Hybrid porous materials .............................................................................................. 5
b) Hybrid lamellar materials ............................................................................................ 5
c) Supramolecular hybrid materials ................................................................................. 5
3) Definition and classes of ionic liquids ............................................................................ 6
a) Definition of ionic liquids ............................................................................................ 6
b) Classes of ionic liquids ................................................................................................ 6
4) Ionic molecular conductivity ........................................................................................... 6
5) Definition of carbon paste electrodes (CPEs) and their components .............................. 7
a) Definition of carbon paste electrode (CPE) ................................................................. 7
b) Definition of graphite .................................................................................................. 7
c) Definition of binder (pasting liquid) ............................................................................ 7
d) Definition of modified CPE ......................................................................................... 8
6) Definition of corrosion and inhibition of corrosion ........................................................ 8
a) Definition of corrosion ................................................................................................ 8
b) Definition of inhibition ................................................................................................ 8
Chapter II Material and methods
1) Synthesis and crystallization of hybrid materials .......................................................... 11
2) Spectroscopic analysis ................................................................................................... 11
3) Weight loss measurements ............................................................................................ 11
4) Optimized molecular structure ...................................................................................... 12
5) Quantum calculation of ionic liquids ............................................................................ 12
6) Global Quantum Physical-Chemical Descriptors (GQCDs) of ionic liquids ................ 12
7) Electrode preparation .................................................................................................... 13
8) Electrochemical measurements ..................................................................................... 13
Chapter III Results and discussion
1) Hybrid materials structure ............................................................................................. 15
2) FT-IR spectroscopy of hybrid material ......................................................................... 16
3) UV visible spectroscopy ................................................................................................ 18
4) Optimized molecular structures..................................................................................... 18
5) FT-IR spectroscopy of ionic liquids .............................................................................. 19
6) The geometries of ionic liquids ..................................................................................... 20
7) Molecular orbital energy of ionic liquids ...................................................................... 21
8) Global Quantum Chemical Descriptors (GQCDs) ........................................................ 22
9) MEP and charge distribution ......................................................................................... 22
Chapter IV Applications
1) Weight loss measurements ............................................................................................ 25
a) Hybrid material (1/3) ................................................................................................. 25
b) Hybrid material (1/7) ................................................................................................. 25
2) AFM results ................................................................................................................... 25
3) Electrochemical measurements ..................................................................................... 26
a. Cycle voltammetry of the carbon past electrode (CPE) ............................................ 26
b. Current as function of the potential of modified and unmodified electrode (IV curve) 28
c. Impedance of modified and unmodified electrode .................................................... 28Côte titre : MAPH/0637 Characterization of new ionic-liquid and solid materials, study of their structural and electrical properties and investigation of corrosion and inhibition activities. [document électronique] / Racha Selmi, Auteur ; Riadh Bourzami, Directeur de thèse . - [S.l.] : Setif:UFA, 2024 . - 1 vol (29 f.) ; 29 cm.
Langues : Anglais (eng)
Catégories : Thèses & Mémoires:Physique Mots-clés : Physique Index. décimale : 530 - Physique Résumé :
This work reports the study of the structural and physical chemical properties of some synthetized ionic liquids and ionic hybrid materials. The structures have been studied experimentally by single crystal XRD. The IR spectroscopy results of ionic liquids were confirmed and explained via DFT calculations, which a good matching was found. In addition, the DFT calculates on the ionic liquids, the orbitals, partial charges and the MEP, discussing through these lasts the reactivity and the stability of the studied compounds. The corrosion inhibition of the ionic liquids and hybrid materials was studied experimentally by the method of the weight loss measurements. Furthermore, the optoelectronic properties have been studied experimentally by UV-Visible spectroscopy, while the electronic-transport property has been studied adopting the method of the carbon past electrode (CPE), and the measurements were performed by electrochemical way.Note de contenu : Sommaire
Introduction
Chapter I Bibliography
1) Definition and classification of hybrid materials ............................................................ 4
a) Definition ..................................................................................................................... 4
b) Classification ............................................................................................................... 4
2) Common hybrids families ............................................................................................... 5
a) Hybrid porous materials .............................................................................................. 5
b) Hybrid lamellar materials ............................................................................................ 5
c) Supramolecular hybrid materials ................................................................................. 5
3) Definition and classes of ionic liquids ............................................................................ 6
a) Definition of ionic liquids ............................................................................................ 6
b) Classes of ionic liquids ................................................................................................ 6
4) Ionic molecular conductivity ........................................................................................... 6
5) Definition of carbon paste electrodes (CPEs) and their components .............................. 7
a) Definition of carbon paste electrode (CPE) ................................................................. 7
b) Definition of graphite .................................................................................................. 7
c) Definition of binder (pasting liquid) ............................................................................ 7
d) Definition of modified CPE ......................................................................................... 8
6) Definition of corrosion and inhibition of corrosion ........................................................ 8
a) Definition of corrosion ................................................................................................ 8
b) Definition of inhibition ................................................................................................ 8
Chapter II Material and methods
1) Synthesis and crystallization of hybrid materials .......................................................... 11
2) Spectroscopic analysis ................................................................................................... 11
3) Weight loss measurements ............................................................................................ 11
4) Optimized molecular structure ...................................................................................... 12
5) Quantum calculation of ionic liquids ............................................................................ 12
6) Global Quantum Physical-Chemical Descriptors (GQCDs) of ionic liquids ................ 12
7) Electrode preparation .................................................................................................... 13
8) Electrochemical measurements ..................................................................................... 13
Chapter III Results and discussion
1) Hybrid materials structure ............................................................................................. 15
2) FT-IR spectroscopy of hybrid material ......................................................................... 16
3) UV visible spectroscopy ................................................................................................ 18
4) Optimized molecular structures..................................................................................... 18
5) FT-IR spectroscopy of ionic liquids .............................................................................. 19
6) The geometries of ionic liquids ..................................................................................... 20
7) Molecular orbital energy of ionic liquids ...................................................................... 21
8) Global Quantum Chemical Descriptors (GQCDs) ........................................................ 22
9) MEP and charge distribution ......................................................................................... 22
Chapter IV Applications
1) Weight loss measurements ............................................................................................ 25
a) Hybrid material (1/3) ................................................................................................. 25
b) Hybrid material (1/7) ................................................................................................. 25
2) AFM results ................................................................................................................... 25
3) Electrochemical measurements ..................................................................................... 26
a. Cycle voltammetry of the carbon past electrode (CPE) ............................................ 26
b. Current as function of the potential of modified and unmodified electrode (IV curve) 28
c. Impedance of modified and unmodified electrode .................................................... 28Côte titre : MAPH/0637 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MAPH/0637 MAPH/0637 Mémoire Bibliothéque des sciences Anglais Disponible
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