声明
Abstract
摘要
Acknowledgements
List of Figures
Table of Contents
Chapter 1 Introduction
1．1 Fabrication of TiO2 nanotube arrays by anodization
1．1．1 Evolution of fabrication of TiO2 nanotubes by anodization
1．1．2 Chemical reactions during TiO2 nanotube formation by anodization
1．1．3 Generation of the gap between nanotubes
1．2 Ti3+surface defects on the surface of TiO2 nanomaterials
1．2．1 Generation of Ti3+ surface defects
1．2．2 Properties of Ti3+ surface defects
1．2．3 Ti3+ effect in energy related applications
1．3 Applications of TiO2 nanotube arrays
1．3．1 TiO2 nanotube arrays used as photocatalyst
1．3．2 TiO2 nanotube arrays used as rechargeable batteries and switchable electrochromic devices
1．4 Motivation and scope of this thesis
References
Chapter 2 Morphology Control of Anodic TiO2 Nanomaterials via Cold Work Pretreatment of Ti Foils
2．1 Introduction
2．2 Experimental section
2．2．1 Cold work of Ti substrates
2．2．2 Thermal treatment
2．2．3 Preparation of anodic TiO2
2．2．4 Photocatalytic degradation test of anodic TiO2
2．2．5 Materials characterization
2．3．Results and discussion
2．3．1 Structure study
2．3．2 Mechanism proposal
2．3．3 Anodization current study
2．3．4 Photocatalytic efficiency study
2．4 Conclusion
References
Chapter 3 Gradient TiO2 Nanotube Arrays via Asymmetric Anodization
3．1 Introduction
3．2 Experimental
3．2．1 Asymmetrical experimental system for anodization
3．2．2 Characteristics of the anodic TiO2 nanotubes
3．3 Results and discussion
3．3．1 Oxide Voltage control during the asymmetric TiO2 nanotube
3．3．2 Conductivity of the different electrolytes
3．3．3 The effect of cold work on asymmetrical anodization
3．4 Conclusions
References
Chapter 4 Selective Removal of the Outer Shells of Anodic TiO2 Nanotubes
4．1 Introduction
4．2 Experimental
4．2．1 Fabrication of conventional anodic TiO2 nanotubes
4．2．2 “Parallel’’etching treatment of anodic TiO2 nanotubes
4．2．3 Characterization
4．2．4 Study on photocatalytic efficiency
4．3 Results and discussion
4．3．1 Morphology study
4．3．2 General forming mechanism of anodic TiO2 nanotubes
4．3．3 Etching mechanism of PE
4．3．4 Photocatalytic efficiency study
4．3．5 Prolonged PE
4．3．6 Alternating VA and PE for fabricating multilayers
4．4 Conclusions
References
Chapter 5 Electrochemical Doping of Anatase TiO2 in Organic Electrolytes for High-performance Supercapacitors and Photocatalysts
5．1 Introduction
5．2 Experimental
5．2．1 Fabrication of anatase TiO2 nanotubes
5．2．2 Electrochemical doping
5．2．3 Characterization
5．2．4 Photoconversion efficiency and conductivity measurements
5．2．5 Photocatalvtic measurements
5．2．6 Electrochemical measurements for supercapacitor applications
5．3 Results and discussion
5．3．1 Morphology characteristics of anatase black TiO2 nanotubes
5．3．2 The mechanism of obtaining stable black TiO2
5．3．3 Conductivity measurement
5．3．4 Photoconversion efficiency
5．3．5 Photocatalyst performance
5．3．6 Supercapacity performance
5．4 Conclusions
References
Chapter 6 Conclusions and Suggestions for Future Work
6．1 Conclusions
6．2 Suggestions for future work
Publications
