| Abstract | 第5-7页 |
| 摘要 | 第8-14页 |
| Chapter 1 Introduction | 第14-20页 |
| 1.1 Background and significance | 第14-16页 |
| 1.2 Objectives of the study | 第16页 |
| 1.3 Contents of the study | 第16-17页 |
| 1.4 The organization of this dissertation | 第17-18页 |
| 1.5 The innovation of this dissertation | 第18-20页 |
| Chapter 2 Literature review | 第20-34页 |
| 2.1 Introduction to EPFRs | 第20-25页 |
| 2.2 Occurrence of EPFRs in environment | 第25-26页 |
| 2.3 Toxicity and environmental effect of EPFRs | 第26-29页 |
| 2.4 Involving of EPFRs in degradation of organic chemicals in ambient environment | 第29-33页 |
| 2.5 Key issues need to be answered in the study | 第33-34页 |
| Chapter 3 Formation of environmentally persistent free radicals and the reducedcatechol degradation on hematite-silica surface under UV irradiation | 第34-58页 |
| 3.1 Introduction | 第34-35页 |
| 3.2 Materials and methods | 第35-38页 |
| 3.2.1 Preparation of solid particles | 第35-36页 |
| 3.2.2 Batch sorption experiments | 第36-37页 |
| 3.2.3 UV irradiation and in situ EPR measurement | 第37页 |
| 3.2.4 Quantification of catechol | 第37-38页 |
| 3.3 Results and discussion | 第38-56页 |
| 3.3.1 Characterization of particles | 第38-41页 |
| 3.3.2 Increased stability of catechol on hematite-loaded silica | 第41-44页 |
| 3.3.3 Free radicals detected in catechol degradation system | 第44-50页 |
| 3.3.4 The stability of free radicals on iron-loaded silica | 第50-52页 |
| 3.3.5 Possible reactions of catechol on iron-loaded silica | 第52-56页 |
| 3.4 Conclusions and environmental implications | 第56-58页 |
| Chapter 4 Fe(Ⅲ)/Fe(Ⅱ) cycles and their roles in catechol degradation andformation of environmentally persistent free radicals on hematite-silica surface | 第58-90页 |
| 4.1 Introduction | 第58-59页 |
| 4.2 Materials and methods | 第59-62页 |
| 4.2.1 Preparation of solid particles | 第59页 |
| 4.2.2 Catechol loading on solid particles | 第59页 |
| 4.2.3 Catechol degradation | 第59-60页 |
| 4.2.4 In situ EPR measurement | 第60页 |
| 4.2.5 Quantification of catechol | 第60-61页 |
| 4.2.6 Fe characterization | 第61-62页 |
| 4.2.7 GC-MS analyses | 第62页 |
| 4.3 Results and discussion | 第62-88页 |
| 4.3.1 Degradation of adsorbed catechol as affected by atmosphere composition | 第62-69页 |
| 4.3.2 Function of atmosphere on generation of free radicals in the catechol degradation system | 第69-77页 |
| 4.3.3 Fe(Ⅱ) on HMT-silica in catechol degradation systems | 第77-83页 |
| 4.3.4 Possible degradation pathways of the adsorbed catechol | 第83-88页 |
| 4.4 Conclusion and environmental implications | 第88-90页 |
| Chapter 5 The ubiquitous of EPFR formation and the generation of reactive oxygenspecies | 第90-106页 |
| 5.1 Introduction | 第90-91页 |
| 5.2 Materials and methods | 第91-94页 |
| 5.2.1 Preparation of solid particles | 第91页 |
| 5.2.2 Catechol loading on solid particles | 第91-92页 |
| 5.2.3 Catechol degradation | 第92页 |
| 5.2.4 EPR measurement | 第92页 |
| 5.2.5 Hydroxyl Radical capture | 第92-93页 |
| 5.2.6 Quantification of catechol and Fe(Ⅱ) | 第93-94页 |
| 5.3 Results and discussion | 第94-105页 |
| 5.3.1 Effect of the light wavelength on degradation of catechol | 第94-97页 |
| 5.3.2 The formation of EPFRs and the effect on catechol degradation in the dark | 第97-105页 |
| 5.4 Conclusion and environmental implications | 第105-106页 |
| Chapter 6 Conclusions and prospective | 第106-108页 |
| 6.1 Conclusions | 第106页 |
| 6.2 Prospective | 第106-108页 |
| Acknowledgements | 第108-110页 |
| Reference | 第110-128页 |
| Appendix A List of publications and prizes | 第128-132页 |
| Appendix B List of symbols and abbreviations | 第132-133页 |
