正版 化学传感器:仿真与建模:第1卷:下册:金属氧化物的显微结构表

PREFACE
ABOUT THE EDITOR
CONTRIBUTORS
6 MODELING INTERACTION OF METAL OXIDE SURFACES WITH WATER
1 Introduction
2 Metal Oxide-Water Interactions and Their Study
2.1 General Oxide Properties and Surface Processes
2.2 Experimental Methods
2.3 Computer Simulations
2.4 Theoretical Models
3 Electronic Structure and Surface Reactions
3.1 TiO2
3.2 SnO2
3.3 ZnO
4 Thermodynamic and Structural Aspects of Adsorption
4.1 TiO2
4.2 SnO2
4.3 ZnO
5 Dynamics of Adsorbed Water
5.1 Fast Processes-Proton Motion
5.2 Slow Processes-Molecular Motion
6 Perspectives
7 Acknowledgments
References
7 DENSITY FUNCTIONAL THEORY STUDY OF WATER DISSOCIATVE CHEMISORPTION ON METAL OXIDE SURFACES
1 Introduction
2 Catalytic Water Dissociation on Metal Oxide Surfaces
2.1 Water Dissociative Chemisorption on Fe3O4(111) Surfaces
2.2 Water Dissociative Chemisorption on Rutile-TiO2(110) Surfaces
2.3 Water Dissociative Chemisorption on α-Al2O3(100) Surfaces
4 Summary
5 Acknowledgments
References
8 FIRST-PRINCIPLES STUDIES OF HYDROGEN SPILLOVER MECHANISMS ON METAL OXIDES
1 Introduction
2 General View of Spillover
2.1 Mechanism of Hydrogen Spillover on Metal Oxide
2.2 The Role of Noble Metals in the Spillover Effect
2.3 The Role of Spillover in Chemical Sensors
2.4 Experimental Confirmations of the Presence of Spillover Effect
3 Computational Approach
4 Hydrogen Spillover in MoO3
5 Hydrogen Spilloverin Al2O3
6 Hydrogen Spilloverin WO3
7 Summary
References
9 ADSORPTION AND DIFFUSION OF ADATOMS AND SMALL CLUSTERS ON METAL OXIDE SURFACES
1 Introduction
2 Theoretical Methods and Concepts in Metal/Oxide Interaction
2.1 Theoretical Methods
2.2 Concepts in Metal/Oxide Interaction
3 Diffusion of Isolated Adatoms
3.1 Energy Barriers for Isolated Adatoms on Flat MgO(001)
3.2 Long Jumps in Adatom Diffusion
3.3 Diffusion in the Presence of Defects
4 Diffusion of Dimers, Trimers, and Tetramers
4.1 Dimers
4.2 Trimers
4.3 Tetramers
5 Adsorption and Diffusion on Exotic (Ultrathin) Oxide Substrates
5.1 Adsorption
5.2 Diffusion
6 Conclusions
References
10 EFFECT OF SIZE ON THE PHASE STABILITY OF NANOSTRUCTURES
1 Introduction and Motivation
2 Phase Stability and Structural Phase Transition
2.1 Crystals and Crystalline Structures
2.2 Factors Triggering Phase Transitions
2.3 Size Effect on Phase-Transition Pressure and Temperature of Nanostructures
2.4 Research on the Thermodynamics of Solid Structural Nanophase Transitions
2.5 Effect of Surface: Surface Energy and Surface Stress
2.6 Effect of Shape on Phase Stability
3 Theoretical Methods for Size-Dependent Phase Stability
3.1 Simulation Techniques
3.2 Thermodynamics
3.3 Applications: Case Studies
4 Concluding Remarks
References
11 SEGREGATION-INDUCED GRAIN-BOUNDARY ELECTmCAL POTENTIAL IN IONIC OXIDE MATERIALS:SIMULATION APPROACHES AND PENDING CHALLENGES
1 Introduction: General Ideas About Segregation Effects in Oxide Materials
2 Modeling of Segregation to the Grain Boundaries: Analytical (or Continuum) Approach
3 Atomistic Approach: Molecular Dynamics Modeling
4 Mesoscopic Approach: Phase-Field Models
4.1 Topological Evolution of a Collective of Many Grains
4.2 Microstructural Evolution Coupled with Chemical Segregation
5 Pending Problems and Future Prospects
6 Acknowledgments
References
INDEX