文摘
英文文摘
Chapter 1 Introduction
1.1 Applications of TiO2
1.1.1 Pigment materials
1.1.2 Solar cells
1.1.3 Photocatalysts
1.1.4 Gas sensors
1.2 Characters of TiO2
1.3 Synthesis of TiO2 nano-sized powders
1.3.1 Sulfate process and chloride process
1.3.2 Sol-gel method
1.3.3 Hydrothermal crystallization
1.4 Aim of this research
1.4.1 Synthesis of ultrafine TiO2 nano-sized powders by precipitating methods
1.4.2 Phase transformation
1.5 The contents of this thesis
Chapter 2 Experimental
2.1 Fabrication of TiO2 nano-sized powders
2.1.1 Preparing the stock solution
2.1.2 Synthesis of ultrafine crystalline TiO2 nano-sized powders
2.2 Phase transformation to rutile
2.3 Measurement devices
2.3.1 PH meter
2.3.2 FT- Infrared (FT-IR) Spectrophotometer
2.3.3 X-ray diffractometer (XRD)
2.3.4 Differential scanning calorimeter (DSC)
2.3.5 Transmission electronic microscopic (TEM) system
Chapter 3 Synthesis of TiO2 Nano-Sized Powders
3.1 Hydrolysis in aqueous titanium tetrachloride (TiCl4) solution
3.1.1 Literature review of hydrolysis in aqueous TiCl4 solution
3.1.2 Thermodynamics
3.1.3 FT-IR spectra
3.2 Influence of pH value of reaction solutions on the phase of TiO2 products
3.2.1 Thermodynamic analysis
3.2.2 XRD
3.2.3 FT-IR
3.2.4 DSC
3.3 Influence of drying temperature on the particle size
3.4 The influence of temperature on the phase of TiO2 products
3.4.1 Theory of homogenous nucleation
3.4.2 Calculation of the critical morlar
3.5 Influence of pH value on the phase of TiO2 products
3.6 Influence of pH and concentration on the particle size
3.7 Summary
Chapter 4 Anatase-rutile Phase Transformation
4.1 Brief literature review of anatase-brookite-rutile phase transformation
4.2 Influence of calcination temperature and time on anatase-rutile phase transformation
4.3 Unknown phase in the calcination products
4.4 Summary
Conclusions(in Chinese)
References
哈尔滨工业大学硕士学位论文原创性声明
哈尔滨工业大学硕士学位论文使用授权书
Acknowledgement
致谢
