含有氧缺陷的钨基纳米材料的制备及其光催化和光致变色性能研究
发布时间：2021-01-07 09:13
Semiconductor photocatalysis technology emerges as a “green technology” to remedy the problems resulting from the increasing energy shortages and environmental degradation.Recent studies on introduction of oxygen vacancies in semiconductor photocatalysts have shown great promise towards the increase in photo-response range as well as improved photoactivity.Herein,we have prepared Zn WO4 sample with oxygen vacancies(denoted as ZnWO4-x)by the solvothermal treatment of Zn（NO3）...
【文章来源】：东华大学上海市 211工程院校 教育部直属院校
【文章页数】：77 页
【学位级别】：硕士
【文章目录】：
ABSTRACT
1. Introduction
1.1. Semiconductor Photocatalysis
1.2. Important Principles Central to Semiconductor Photocatalysis
1.3. Categories of Semiconductor Heterojunctions
1.3.1. Semiconductor-Semiconductor （denoted as S-S） Heterojunction
1.3.2. Semiconductor-Carbon Group （S-C） Heterojunction
1.3.3. Semiconductor-Metal Heterojunction
1.3.4. Multiconstituent Heterojunction
1.4. Types of Photocatalysis
2 Photocatalysis"> 1.4.1. CO2 Photocatalysis
1.4.2. Organic Pollutant Photocatalysis
1.4.3. Water Splitting Photocatalysis
1.5. Principles of Defect states
1.5.1. Oxygen Vacancies
1.6. Tungsten Nanomaterials
1.7. Photoreversible Color Switching of Semiconductor Nanomaterials
1.7.1. Mechanism
1.7.2. Parameters
1.8. Color Switching Categories
1.8.1. Oxygen Indicators
1.8.2. Rewritable paper
1.8.3. Intelligent Inks
1.8.4. Hydrogenation/Oxidative Hydrogenation System
1.8.5. Color Switching by Swelling
1.8.6. Color Switching by Utilizing an Exterior Voltage
4-x Nanorods with Oxygen Vacancy for Efficient Photocatalytic Degradation of Tetracycline">2. Synthesis of Zn WO4-x Nanorods with Oxygen Vacancy for Efficient Photocatalytic Degradation of Tetracycline
2.1. Introduction
2.2. Experimental Section
2.2.1. Materials and Chemicals
4-x and ZnWO4 Nanorods"> 2.2.2. Synthesis of ZnWO4-x and ZnWO4 Nanorods
2.2.3. Characterization
2.2.4. Photocatalytic Activity
2.3. Results and Discussion
2.3.1. Synthesis and Characterization
2.3.2. Optical Properties
2.3.3. Photocatalytic Performance
2.3.4. Photocatalytic Mechanism
2.4. Conclusion
2WO6 with Oxygen Vacancies">3. Photocatalytic Color Switching of Bi2WO6 with Oxygen Vacancies
3.1. Introduction
3.2. Experimental Section
3.2.1. Materials and Chemicals
2WO6 and Bi2WO6-x"> 3.2.2. Synthesis of Pristine Bi2WO6 and Bi2WO6-x
3.2.3. Characterization
3.3. Results and Discussions
3.4. Conclusion
4. Summary and Limitations of the Project as a Prospective for Future Studies
5. References
List of Publications
ACKNOWLEDGEMENT
本文编号：2962293
【文章来源】：东华大学上海市 211工程院校 教育部直属院校
【文章页数】：77 页
【学位级别】：硕士
【文章目录】：
ABSTRACT
1. Introduction
1.1. Semiconductor Photocatalysis
1.2. Important Principles Central to Semiconductor Photocatalysis
1.3. Categories of Semiconductor Heterojunctions
1.3.1. Semiconductor-Semiconductor （denoted as S-S） Heterojunction
1.3.2. Semiconductor-Carbon Group （S-C） Heterojunction
1.3.3. Semiconductor-Metal Heterojunction
1.3.4. Multiconstituent Heterojunction
1.4. Types of Photocatalysis
2 Photocatalysis"> 1.4.1. CO2 Photocatalysis
1.4.2. Organic Pollutant Photocatalysis
1.4.3. Water Splitting Photocatalysis
1.5. Principles of Defect states
1.5.1. Oxygen Vacancies
1.6. Tungsten Nanomaterials
1.7. Photoreversible Color Switching of Semiconductor Nanomaterials
1.7.1. Mechanism
1.7.2. Parameters
1.8. Color Switching Categories
1.8.1. Oxygen Indicators
1.8.2. Rewritable paper
1.8.3. Intelligent Inks
1.8.4. Hydrogenation/Oxidative Hydrogenation System
1.8.5. Color Switching by Swelling
1.8.6. Color Switching by Utilizing an Exterior Voltage
4-x Nanorods with Oxygen Vacancy for Efficient Photocatalytic Degradation of Tetracycline">2. Synthesis of Zn WO4-x Nanorods with Oxygen Vacancy for Efficient Photocatalytic Degradation of Tetracycline
2.1. Introduction
2.2. Experimental Section
2.2.1. Materials and Chemicals
4-x and ZnWO4 Nanorods"> 2.2.2. Synthesis of ZnWO4-x and ZnWO4 Nanorods
2.2.3. Characterization
2.2.4. Photocatalytic Activity
2.3. Results and Discussion
2.3.1. Synthesis and Characterization
2.3.2. Optical Properties
2.3.3. Photocatalytic Performance
2.3.4. Photocatalytic Mechanism
2.4. Conclusion
2WO6 with Oxygen Vacancies">3. Photocatalytic Color Switching of Bi2WO6 with Oxygen Vacancies
3.1. Introduction
3.2. Experimental Section
3.2.1. Materials and Chemicals
2WO6 and Bi2WO6-x"> 3.2.2. Synthesis of Pristine Bi2WO6 and Bi2WO6-x
3.3. Results and Discussions
3.4. Conclusion
4. Summary and Limitations of the Project as a Prospective for Future Studies
5. References
List of Publications
ACKNOWLEDGEMENT
本文编号：2962293
本文链接：https://www.wllwen.com/kejilunwen/cailiaohuaxuelunwen/2962293.html
