Title Page
Contents
Abstract 8
Chapter 1. Literature review 10
1.1. Introduction 10
1.2. Heterojunction between narrow bandgap semiconductors (NBSs) 14
1.2.1. p-n junction photocatalytic system 15
1.2.2. Z-scheme photocatalytic system 22
1.3. Heterojunction structures between WBS and NBS 33
1.3.1. Type-A heterojunction 36
1.3.2. Type-B heterojunction 43
1.3.3. Double heterojunction system 53
1.4. Perspectives 56
1.5. References 59
Chapter 2. Remarkable variation of visible light photocatalytic activities of M/Sn0.9Sb0.1O2/TiO2 heterostructures depending on the loaded metals[이미지참조] 80
2.1. Abstract 81
2.2. Introduction 81
2.3. Experimental Section 84
2.3.1. Preparation of ATO/TiO₂ heterostructures 84
2.3.2. Preparation of M/ATO/TiO₂ (M=Pt, Au, or Ag) 85
2.3.3. Characterizations 86
2.4. Results and Discussion 86
2.4.1. Characterization and individual components of M/ATO/TiO₂ 86
2.4.2. Photocatalytic properties of M/ATO/TiO₂ 91
2.4.3. Spectroscopic analysis for M/ATO/TiO₂ 95
2.4.4. Photocatalytic property of ATO/TiO₂/Pt 96
2.4.5. Photocatalytic property depending on the relative composition of ATO and TiO₂ in Pt/ATO/TiO₂ 97
2.5. Conclusions 99
2.6. References 100
2.7. Supporting Material 108
Chapter 3. Efficient photothermal catalytic property of RuOx/CuCr2O4 in converting CO₂ to CH₄[이미지참조] 118
3.1. Abstract 119
3.2. Introduction 119
3.3. Experimental Section 122
3.3.1. Materials 122
3.3.2. Catalyst preparation 122
3.3.3. Characterizations 123
3.3.4. Evaluation photocatalytic activities 124
3.3.5. TR-PL experiments 125
3.4. Results and Discussions 125
3.5. Conclusions 137
3.6. References 138
3.7. Supporting Materials 141