|
| Titre : |
Synthesis, Characterization and Nuclear Applications of MCM-41 and MCM-48 Mesoporous Materials |
| Type de document : |
document électronique |
| Auteurs : |
Habiba Souiouet, Auteur ; Bouthaina Melab, Auteur ; hadjira Guerba, Directeur de thèse |
| Editeur : |
Setif:UFA |
| Année de publication : |
2025 |
| Importance : |
1 vol (55 f.) |
| Format : |
29 cm |
| Langues : |
Anglais (eng) |
| Catégories : |
Thèses & Mémoires:Physique
|
| Mots-clés : |
Synthesis
Characterization and Nuclear |
| Index. décimale : |
530 - Physique |
| Résumé : |
This study examines MCM-41 and MCM-48 mesoporous materials, focusing on their synthesis, analytical characterization, and potential applications in the nuclear sector. MCM-41 and MCM-48 are classified within the M41S family of systematically organized mesoporous silica materials, synthesized using surfactant templated sol-gel methodology. MCM-41 has a hexagonal configuration of cylindrical mesopores with diameters ranging from 2 to 50 nm, while MCM-48 has a cubic bicontinuous topology with interconnected three-dimensional pore networks. The materials were characterized using various techniques, including X-ray diffraction, SEM, TEM, EDS, BET analysis, FTIR, zeta potential assessments, laser granulometry, and differential thermal and thermogravimetric analysis. The materials exhibited remarkable attributes including elevated surface areas, consistent pore size distribution, substantial pore volumes, and outstanding thermal stability. |
| Note de contenu : |
Sommaire
List of Abbreviations
Introduction general ..................................................................................................................... 1
Part I: Bibliographic Study
Chapter I: Nuclear Waste and Types of Radiation
Introduction……………………………………………………………………………….…...4
I.1.Definition of Nuclear Waste ..................................................................................................... 4
I.2.Types of Nuclear Waste ............................................................................................................. 5
I.2.1.Low Level Waste (LLW)........................................................................................................ 5
I.2.2.Intermediate Level Waste (ILW) ........................................................................................... 5
I.2.3.High-Level Waste (HLW) ...................................................................................................... 5
I.3.Nuclear Waste Management Strategies .................................................................................... 5
I.3.1. Direct Disposal (DD) ............................................................................................................ 5
I.3.2. Reprocessing (RP) ................................................................................................................ 5
I.4. Environmental impact of Nuclear Waste ................................................................................ 6
I.5. Types of radiation ..................................................................................................................... 6
I.5.1. Gamma and X Radiation ....................................................................................................... 6
I.6. Conclusion ............................................................................................................................... 7
Chapter II: Mesoporous Materials
Introduction .................................................................................................................................... 8
II.1.Mesoporous Materials…………………………………………………….……….…...….8
IIII.3. Different Types of Mesoporous Materials ........................................................................... 10
II.4.Synthesis of Mesoporous Materials ...................................................................................... 10
II.5.Formation Mechanisms of Mesoporous Materials............................................................... 12
II.5.1.Cooperative Self-Assembly Mechanism (CTM) .............................................................. 12
II.5.2.LCT Transcriptional Mechanism ....................................................................................... 13
II.6. Role of Silica Precursors ...................................................................................................... 14
II.7. Application of mesoporous materials .................................................................................. 14
II.7.1.Adsorption .......................................................................................................................... 14
II.7.2.Catalysis.............................................................................................................................. 15
II.7.3.Catalyst support ................................................................................................................... 15
II.7.4.Environmental applications ................................................................................................ 15
II.8. Conclusion ............................................................................................................................ 16
Chapter III: Mesoporous materials in the field of nuclear industry:Applications
Introduction .................................................................................................................................. 17
III.1.Mesoporous materials in nuclear industry .......................................................................... 17
III.2.Methods to Synthesize Functional Mesoporous Materials ................................................ 18
III.2.1.Surfactant-Based Templating ............................................................................................ 18
III.2.2.Nanocasting and Non-Hydrolytic Sol-Gel ....................................................................... 18
III.3.Achievements of Mesoporous Solids in Nuclear Field ...................................................... 18
III.3.1.Separation chemistry ......................................................................................................... 19
III.3.2.Waste management ............................................................................................................ 20
III.3.3.Advanced fuel forms and transmutation targets .............................................................. 20
III.4.Use of mesoporous materials as model materials for behaviour under radiation studies……………. ...................................................................................................................... 21
III.5.Conclusion ............................................................................................................................. 25
.2. Classification of Mesoporous Materials .............................................................................. 10
Part II: Experimental section
Chapter I: Methods for synthesizing MCM-41 and MCM-48 mesoporous materials
Introduction……………………..………………………………………………..…..……..27
I.1Synthesis Principle ……………………………………………………………………...27
I.2. ProtocolSynthesis M41S ………………………….……………………………..............28
I.2.1. MCM-41 Synthesis ………………………..……………………………………..…..28
I.2.2. MCM-48 Synthesis………………………………………………………………..…...28
I.3.Characterization…………….………………………………..…………………...……....29
I.3.1. X-ray Diffraction (XRD) …………………….………………………………………..29
I.3.2. Scanning electron microscope (SEM) ………………………………………………...31
I.3.3. Infrared Spectroscopy ………………………………………………………………….35
I.3.4. Thermogravimetry (TGA) ………………………………………………………….…35
I.3.5. Specific Surface Area Measurement Using the BET Method……………………........36
I.3.6. Laser Particle Size Analysis…………………………………………………………....37
I.3.7. zeta potential…………………………………………………………………………...38
I.3.8. Determination of the zero-load point……………………………………………….…..38
I.3.9. Energy Dispersive Spectroscopy (EDS)…………………………………………….…39
I.4. Conclusion…………………………………………………………………………..……39
Chapter II: Results and discussion
Introduction .................................................................................................................................. 42
II.1. Isoelectric point of the supports MCM-41and MCM-48.................................................... 42
II.2. Zeta potential ......................................................................................................................... 43
II.3. Laser Particle Size Analysis ................................................................................................. 44
II.4. Infrared Spectroscopy ........................................................................................................... 45
II.5. The Differential Thermal Analysis (DTA) and Thermogravimetry (TGA) ......................
II.6. Specific surface area (BET method) .................................................................................... 48
II.7. X-ray Diffraction (XRD) ...................................................................................................... 49
II .7.1. DRX analysis of MCM-48 before ............................................................................ 49
II.8. Chemical and morphological analysis of MCM-48 ............................................................ 50
II.9. FT-IR spectra of MCM48 irradiated at different doses....................................................... 52
Conclusion General ………………………………………………………………………....54
References Bibliography |
| Côte titre : |
MAPH/0709 |
Synthesis, Characterization and Nuclear Applications of MCM-41 and MCM-48 Mesoporous Materials [document électronique] / Habiba Souiouet, Auteur ; Bouthaina Melab, Auteur ; hadjira Guerba, Directeur de thèse . - [S.l.] : Setif:UFA, 2025 . - 1 vol (55 f.) ; 29 cm. Langues : Anglais ( eng)
| Catégories : |
Thèses & Mémoires:Physique
|
| Mots-clés : |
Synthesis
Characterization and Nuclear |
| Index. décimale : |
530 - Physique |
| Résumé : |
This study examines MCM-41 and MCM-48 mesoporous materials, focusing on their synthesis, analytical characterization, and potential applications in the nuclear sector. MCM-41 and MCM-48 are classified within the M41S family of systematically organized mesoporous silica materials, synthesized using surfactant templated sol-gel methodology. MCM-41 has a hexagonal configuration of cylindrical mesopores with diameters ranging from 2 to 50 nm, while MCM-48 has a cubic bicontinuous topology with interconnected three-dimensional pore networks. The materials were characterized using various techniques, including X-ray diffraction, SEM, TEM, EDS, BET analysis, FTIR, zeta potential assessments, laser granulometry, and differential thermal and thermogravimetric analysis. The materials exhibited remarkable attributes including elevated surface areas, consistent pore size distribution, substantial pore volumes, and outstanding thermal stability. |
| Note de contenu : |
Sommaire
List of Abbreviations
Introduction general ..................................................................................................................... 1
Part I: Bibliographic Study
Chapter I: Nuclear Waste and Types of Radiation
Introduction……………………………………………………………………………….…...4
I.1.Definition of Nuclear Waste ..................................................................................................... 4
I.2.Types of Nuclear Waste ............................................................................................................. 5
I.2.1.Low Level Waste (LLW)........................................................................................................ 5
I.2.2.Intermediate Level Waste (ILW) ........................................................................................... 5
I.2.3.High-Level Waste (HLW) ...................................................................................................... 5
I.3.Nuclear Waste Management Strategies .................................................................................... 5
I.3.1. Direct Disposal (DD) ............................................................................................................ 5
I.3.2. Reprocessing (RP) ................................................................................................................ 5
I.4. Environmental impact of Nuclear Waste ................................................................................ 6
I.5. Types of radiation ..................................................................................................................... 6
I.5.1. Gamma and X Radiation ....................................................................................................... 6
I.6. Conclusion ............................................................................................................................... 7
Chapter II: Mesoporous Materials
Introduction .................................................................................................................................... 8
II.1.Mesoporous Materials…………………………………………………….……….…...….8
IIII.3. Different Types of Mesoporous Materials ........................................................................... 10
II.4.Synthesis of Mesoporous Materials ...................................................................................... 10
II.5.Formation Mechanisms of Mesoporous Materials............................................................... 12
II.5.1.Cooperative Self-Assembly Mechanism (CTM) .............................................................. 12
II.5.2.LCT Transcriptional Mechanism ....................................................................................... 13
II.6. Role of Silica Precursors ...................................................................................................... 14
II.7. Application of mesoporous materials .................................................................................. 14
II.7.1.Adsorption .......................................................................................................................... 14
II.7.2.Catalysis.............................................................................................................................. 15
II.7.3.Catalyst support ................................................................................................................... 15
II.7.4.Environmental applications ................................................................................................ 15
II.8. Conclusion ............................................................................................................................ 16
Chapter III: Mesoporous materials in the field of nuclear industry:Applications
Introduction .................................................................................................................................. 17
III.1.Mesoporous materials in nuclear industry .......................................................................... 17
III.2.Methods to Synthesize Functional Mesoporous Materials ................................................ 18
III.2.1.Surfactant-Based Templating ............................................................................................ 18
III.2.2.Nanocasting and Non-Hydrolytic Sol-Gel ....................................................................... 18
III.3.Achievements of Mesoporous Solids in Nuclear Field ...................................................... 18
III.3.1.Separation chemistry ......................................................................................................... 19
III.3.2.Waste management ............................................................................................................ 20
III.3.3.Advanced fuel forms and transmutation targets .............................................................. 20
III.4.Use of mesoporous materials as model materials for behaviour under radiation studies……………. ...................................................................................................................... 21
III.5.Conclusion ............................................................................................................................. 25
.2. Classification of Mesoporous Materials .............................................................................. 10
Part II: Experimental section
Chapter I: Methods for synthesizing MCM-41 and MCM-48 mesoporous materials
Introduction……………………..………………………………………………..…..……..27
I.1Synthesis Principle ……………………………………………………………………...27
I.2. ProtocolSynthesis M41S ………………………….……………………………..............28
I.2.1. MCM-41 Synthesis ………………………..……………………………………..…..28
I.2.2. MCM-48 Synthesis………………………………………………………………..…...28
I.3.Characterization…………….………………………………..…………………...……....29
I.3.1. X-ray Diffraction (XRD) …………………….………………………………………..29
I.3.2. Scanning electron microscope (SEM) ………………………………………………...31
I.3.3. Infrared Spectroscopy ………………………………………………………………….35
I.3.4. Thermogravimetry (TGA) ………………………………………………………….…35
I.3.5. Specific Surface Area Measurement Using the BET Method……………………........36
I.3.6. Laser Particle Size Analysis…………………………………………………………....37
I.3.7. zeta potential…………………………………………………………………………...38
I.3.8. Determination of the zero-load point……………………………………………….…..38
I.3.9. Energy Dispersive Spectroscopy (EDS)…………………………………………….…39
I.4. Conclusion…………………………………………………………………………..……39
Chapter II: Results and discussion
Introduction .................................................................................................................................. 42
II.1. Isoelectric point of the supports MCM-41and MCM-48.................................................... 42
II.2. Zeta potential ......................................................................................................................... 43
II.3. Laser Particle Size Analysis ................................................................................................. 44
II.4. Infrared Spectroscopy ........................................................................................................... 45
II.5. The Differential Thermal Analysis (DTA) and Thermogravimetry (TGA) ......................
II.6. Specific surface area (BET method) .................................................................................... 48
II.7. X-ray Diffraction (XRD) ...................................................................................................... 49
II .7.1. DRX analysis of MCM-48 before ............................................................................ 49
II.8. Chemical and morphological analysis of MCM-48 ............................................................ 50
II.9. FT-IR spectra of MCM48 irradiated at different doses....................................................... 52
Conclusion General ………………………………………………………………………....54
References Bibliography |
| Côte titre : |
MAPH/0709 |
|