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Table of Contents
Intro
Foreword
Preface
Contents
Abbreviations
1 Understanding Semiconducting Metal Oxide Gas Sensors
1.1 Development of Semiconducting Metal Oxide Gas Sensors
1.1.1 Kinds of Metal Oxides Used in Gas Sensors
1.2 Application of Semiconducting Metal Oxide Gas Sensors
1.2.1 Use of Semiconductor Metal Oxide (SMO) Sensors in Outdoor Air Quality Assessment
1.2.2 Use of Semiconductor Metal Oxide (SMO) Sensors in Indoor Air Quality Assessment
1.2.3 Use of Semiconductor Metal Oxide (SMO) Sensors in Disease Diagnosis
1.2.4 Use of Semiconductor Metal Oxide (SMO) Sensors in Food Safety
1.2.5 Use of Semiconductor Metal Oxide (SMO) Sensors in Agricultural Production
1.3 Physicochemical Properties of Semiconducting Metal Oxides
1.3.1 Definition of Semiconducting Metal Oxides
1.3.2 Potential Performances
1.3.3 Physical Fundamental of Semiconducting Metal Oxides
References
2 Sensing Mechanism and Evaluation Criteria of Semiconducting Metal Oxides Gas Sensors
2.1 Pure Metal Oxides Semiconductors
2.1.1 N-type Metal Oxides
2.1.2 P-type Metal Oxides
2.2 Metal Oxide Heterojunctions
2.2.1 n-n Heterojunctions
2.2.2 p-p Heterojunctions
2.2.3 p-n Heterojunctions
2.3 Doped Metal Oxides Semiconductors
2.3.1 The Doping of the Main Group Metal Elements
2.3.2 The Doping of the Transition Metal Elements
2.4 Noble Metal Sensitized Metal Oxides
2.5 The Effect of the Crystallite Size
2.6 Gas Sensor Evaluation Criteria
2.6.1 Sensitivity
2.6.2 Operating Temperature
2.6.3 Selectivity
2.6.4 Stability
2.6.5 Response-Recovery Time
2.6.6 Limit of Detection
References
3 Semiconducting Metal Oxides: Morphology and Sensing Performance
3.1 The Effect of Morphology and Structure on Gas Sensing
3.1.1 Grain Size
3.1.2 Grain Phase
3.1.3 Surface Geometry
3.1.4 Grain Networks, Porosity, and the Area of Intergrain Contacts
3.1.5 Agglomeration
3.2 Synthesizing Approaches to Metal Oxides Sensing Materials
3.2.1 Sol-Gel
3.2.2 Hydro- and Solvothermal Methods
3.2.3 Self-assembly Methods
3.2.4 Microemulsion-Mediated Synthesis
3.2.5 Chemical Vapor Deposition (CVD)
References
4 Semiconducting Metal Oxides: Composition and Sensing Performance
4.1 Binary Oxides Heterojunctions
4.1.1 p-n Heterojunctions
4.1.2 n-n Heterojunctions
4.1.3 p-p Heterojunctions
4.2 Noble Metal Modification
4.3 Doping with Heteroatom
4.3.1 Doping with Non-metallic Elements
4.3.2 Doping with Metallic Elements
4.3.3 Doping with Rare Earth Elements
4.4 Composite with Carbon Materials (Graphene, Carbon Nanotubes)
References
5 Semiconducting Metal Oxides: Microstructure and Sensing Performance
5.1 Potential Features of Semiconducting Metal Oxides
5.2 Structure Type and Typical Architectures
5.3 Grain Size and Porous Structure
Foreword
Preface
Contents
Abbreviations
1 Understanding Semiconducting Metal Oxide Gas Sensors
1.1 Development of Semiconducting Metal Oxide Gas Sensors
1.1.1 Kinds of Metal Oxides Used in Gas Sensors
1.2 Application of Semiconducting Metal Oxide Gas Sensors
1.2.1 Use of Semiconductor Metal Oxide (SMO) Sensors in Outdoor Air Quality Assessment
1.2.2 Use of Semiconductor Metal Oxide (SMO) Sensors in Indoor Air Quality Assessment
1.2.3 Use of Semiconductor Metal Oxide (SMO) Sensors in Disease Diagnosis
1.2.4 Use of Semiconductor Metal Oxide (SMO) Sensors in Food Safety
1.2.5 Use of Semiconductor Metal Oxide (SMO) Sensors in Agricultural Production
1.3 Physicochemical Properties of Semiconducting Metal Oxides
1.3.1 Definition of Semiconducting Metal Oxides
1.3.2 Potential Performances
1.3.3 Physical Fundamental of Semiconducting Metal Oxides
References
2 Sensing Mechanism and Evaluation Criteria of Semiconducting Metal Oxides Gas Sensors
2.1 Pure Metal Oxides Semiconductors
2.1.1 N-type Metal Oxides
2.1.2 P-type Metal Oxides
2.2 Metal Oxide Heterojunctions
2.2.1 n-n Heterojunctions
2.2.2 p-p Heterojunctions
2.2.3 p-n Heterojunctions
2.3 Doped Metal Oxides Semiconductors
2.3.1 The Doping of the Main Group Metal Elements
2.3.2 The Doping of the Transition Metal Elements
2.4 Noble Metal Sensitized Metal Oxides
2.5 The Effect of the Crystallite Size
2.6 Gas Sensor Evaluation Criteria
2.6.1 Sensitivity
2.6.2 Operating Temperature
2.6.3 Selectivity
2.6.4 Stability
2.6.5 Response-Recovery Time
2.6.6 Limit of Detection
References
3 Semiconducting Metal Oxides: Morphology and Sensing Performance
3.1 The Effect of Morphology and Structure on Gas Sensing
3.1.1 Grain Size
3.1.2 Grain Phase
3.1.3 Surface Geometry
3.1.4 Grain Networks, Porosity, and the Area of Intergrain Contacts
3.1.5 Agglomeration
3.2 Synthesizing Approaches to Metal Oxides Sensing Materials
3.2.1 Sol-Gel
3.2.2 Hydro- and Solvothermal Methods
3.2.3 Self-assembly Methods
3.2.4 Microemulsion-Mediated Synthesis
3.2.5 Chemical Vapor Deposition (CVD)
References
4 Semiconducting Metal Oxides: Composition and Sensing Performance
4.1 Binary Oxides Heterojunctions
4.1.1 p-n Heterojunctions
4.1.2 n-n Heterojunctions
4.1.3 p-p Heterojunctions
4.2 Noble Metal Modification
4.3 Doping with Heteroatom
4.3.1 Doping with Non-metallic Elements
4.3.2 Doping with Metallic Elements
4.3.3 Doping with Rare Earth Elements
4.4 Composite with Carbon Materials (Graphene, Carbon Nanotubes)
References
5 Semiconducting Metal Oxides: Microstructure and Sensing Performance
5.1 Potential Features of Semiconducting Metal Oxides
5.2 Structure Type and Typical Architectures
5.3 Grain Size and Porous Structure