"Owing to possession of idiosyncratic physical attributes together with inherent magnetism, superconductivity and charge-density-wave order leads to potential usage over diverse domains, e.g., high-end microelectronic strategies, energy conversion and storage, catalysis, etc. 2D metallic TMDs have clutched extensive contemplation in the current time. Upon a thorough revisitation of a great deal of relevant literature, a visible dearth of a comprehensive compendium regarding such substances has been deeply realized. This edited book is aimed at filling such a gap via the presentation of eight different chapters devoted to systematically discussing fundamentals and applications of 2D metallic TMDs, so as to enable the readers to attain an inclusive conceptand adequate knowledge regarding such materials"--
Author(s): Chandra Sekhar Rout, Brahmananda Chakraborty
Series: Physics Research and Technology
Publisher: Nova Science Publishers
Year: 2022
Language: English
Pages: 320
City: New York
Contents
Preface
Acknowledgements
Chapter 1
Introduction to TMDs and Metallic TMDs
References
Chapter 2
Structure and Properties of Metallic TMDs
Abstract
2.1. Introduction
2.2. Crystal Structures
2.2.1. Organizational Categories
2.2.1.1. H and T Phases
2.2.1.2. Extended Structures
2.2.1.3. Allied Compounds
2.3. Electronic Structures
2.3.1. Typical Illustrations
2.3.1.1. 1T-TiS2 and 1T-TiSe2
2.3.1.2. 1T-VSe2
2.3.1.3. 1T- and 2H-NbSe2
2.3.1.4. 1T-, 2H- and 4H-TaS2
2.3.2. Layer Reliance of the Band Structure
2.4. Periodic Lattice Distortion or Charge Density Wave
2.4.1. The Phenomenon
2.4.2. Mechanism for PLD Transformation
2.4.3. Characterization of CDW
2.4.4. Tailoring CDW Transition for Superconductivity Phase Generation
2.5. Optical Properties
2.6. Magnetism in Metallic TMDs
2.6.1. Ferromagnetism
2.6.2. Strain Effect on Magnetism
2.6.3. Effect of Foreign Atoms on Magnetism
2.7. Weyl Semimetal
2.8. Combination with Foreign Atoms
2.8.1. Doping
2.8.2. Intercalation
2.8.3. Heterojunction
Conclusion
References
Chapter 3
Theoretical and DFT Related Studies of Metallic TMDs
Abstract
3.1. Introduction
3.2. Density Functional Theory: An Overview
3.2.1. Born Oppenheimer Approximation
3.2.2. The Hohenberg and Kohn Theorems
3.2.3. Kohn - Sham Equations
3.3. Structural and Electronic Properties of Various TMDs
3.3.1. Structural Analysis
3.3.2. Electronic Structure
3.3.3. Band Structure
3.3.4. A Journey through DFT Studies in Other TMDs
3.4. Chemical Applications of TMDs
3.5. Biosensing Applications of TMDs
3.6. Supercapacitor and Water Splitting Applications of TMDs
3.6.1. Water Splitting Applications
Conclusion
References
Chapter 4
Strategies for the Growth of Metallic TMDs and Their Characterizations
Abstract
4.1. Introduction
4.2. Top-Down Approaches
4.2.1. Mechanical Exfoliation and Liquid-Phase Exfoliation
4.3. Bottom-Up Approach
4.3.1. Chemical Vapour Deposition (CVD)
4.3.2. Molecular Beam Epitaxy (MBE)
4.3.3. Hydrothermal/Solvothermal Method
4.4. Characterization Methods for Metallic TMDs
Conclusion
References
Chapter 5
Chemical, Gas and Bio Sensors Based on Metallic 2D TMDs
Chemical, Gas and Bio Sensors Based on Metallic 2D TMDs
Abstract
5.1. Introduction
5.1.1. Two-Dimensional Transition Metal Dichalcogenides as the Sensing Material
5.2. Gas Sensing Applications
5.2.1. The Sensing Mechanism
5.2.2. Gas Sensing Properties of 2D TMDs
5.3. Chemical Sensing Applications
5.3.1. Vapor Sensing
5.3.2. Humidity Sensor
5.3.3. Electrochemical Sensing
5.3.4. Biosensing Applications
5.4. Conclusion and Future Perspective
References
Chapter 6
Energy Storage and Energy Conversion Applications of Transition Metal Chalcogenides
Abstract
6.1. Introduction
6.2. Energy Storage Devices and Their Storage Mechanisms
6.2.1. 2D TMDCs for Supercapacitor
6.2.1.1. MoS2 Hybrid
6.2.1.2. 2D/2D TMDCs//MXene Hybrid
6.3. Energy Conversion Applications
6.3.1. Solar Cells
6.3.2. Properties of 2D TMDCs Suitable for Solar Cell Efficiency
6.3.3. 2D TMDCs for Solar Cell
6.3.3.1. MoS2
6.3.3.2. MoSe2
6.3.3.3. WS2
6.3.3.4. WSe2
Conclusion
References
Chapter 7
Fuel Cell and Catalysis Applications
Abstract
7.1. Introduction to Catalysis and Fuel Cells
7.2. Applications of 2D TMDCs in Catalysis
7.2.1. Transition Metal Dichalcogenides in Hydrogen Evolution Reaction (HER)
7.2.1.1. Active Sites for HER Electrocatalysis
7.2.1.2. Role of Defects in HER Electrocatalysis
7.2.1.3. Hybrid Structures as Excellent HER Electrocatalysts
7.2.1.4. Importance of Phases
7.2.2. Applications of 2D-TMDCs as Electrocatalysts in Oxygen Evolution Reactions (OER)
7.2.2.1. Introduction to Oxygen Evolution Reaction
7.2.2.2. Background and Figures of Merit
7.2.2.3. Evaluation of Electrocatalytic Performance of Some 2D TMDC Catalysts for OER
7.2.3. 2D TMDCs as Potential Photocatalysts
7.2.3.1. Introduction to Photocatalysis
7.2.3.2. Photocatalysis for Water-Splitting Reaction Using 2D TMDCs
Mechanism
Review of Recent Work in the Field of Photocatalysis Using 2D TMDCs
Use of Plasmons and Phase Engineering in 2D TMDC Photocatalytic Applications
Preparation of 2D-2D Heterostructures Using 2D TMDCs for Photocatalytic Applications
Fabrication of vdW Heterostructures Using 2D TMDCs for Photocatalytic Applications
7.2.3.3. Applications in Dye Sensitized Solar Cells (DSSCs)
7.3. Applications of 2D TMDCs for Fuel Cell Applications
Conclusion
References
Chapter 8
Field Emission Applications of Metallic 2D TMDs
Abstract
8.1. Introduction
8.1.1. Field Electron Emission Process
8.1.2. Fowler Nordheim (F-N) Equation
8.1.3. Fowler Nordheim (F-N) Plot
8.1.4. Calculation of Effective Emission Area
8.1.5. Field Emission Microscope (FEM)
8.1.6. Total Energy Distribution (TED)
8.2. Importance of Field Enhancement Factor in Nanometric Field Emitter
8.3. Applications of Field Emission Microscope
8.3.1. Field Emission Cathode as a Current Source
8.3.2. Field Emission Displays
8.3.3. Field Emitter Arrays
8.4. Field Emission from Nanomaterials
8.5. Importance of 2D Metallic Materials for Field Emission Based Devices
Conclusion
References
Chapter 9
Conclusion and Future Directions
Introduction
References
About the Editors
List of Contributors
Index
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