| 中文摘要 | 第1-6页 |
| Abstract | 第6-8页 |
| Contents | 第8-13页 |
| 1 Preface | 第13-46页 |
| ·Semiconductor Photocatalysis Review | 第13-18页 |
| ·Background of Photocatalysis | 第13页 |
| ·Mechanism of Photocatalysis | 第13-15页 |
| ·Application of Semiconductor Photocatalysis | 第15-18页 |
| ·Wastewater Treatment | 第16页 |
| ·Indoor Air Purification | 第16-17页 |
| ·Anti-bacterial and Deodorizing | 第17页 |
| ·Self-cleaning | 第17-18页 |
| ·Hydrogen Production | 第18页 |
| ·Investigation of the Active Species in Degradation of Organic Pollutants by Aqueous-Phase Photocatalysis | 第18-36页 |
| ·The Role of the Active Species in the Photocatalytic Process | 第18-27页 |
| ·Photogenerated Electrons | 第18-19页 |
| ·Photogenerated Holes | 第19页 |
| ·Hydroxyl Radicals ( OH) | 第19-20页 |
| ·Superoxide Radicals (O_2 ) | 第20-21页 |
| ·Dissolved Oxygen | 第21-22页 |
| ·Hydrogen Peroxide | 第22-23页 |
| ·The Combined Action of OH, O_2 and Excited Holes (h+) | 第23-24页 |
| ·Hydrated Electrons (eaq-) and H | 第24-27页 |
| ·The Detection Techniques of the Active Species | 第27-32页 |
| ·Electron Spin Resonance (ESR) Technique | 第27页 |
| ·Terephthalic Acid (TA)–Fluorescence (FL) Probe Method | 第27-28页 |
| ·Luminol Chemiluminescence (CL) Probe Method | 第28页 |
| ·The Transient Grating (TG) Technique | 第28-30页 |
| ·X-ray Absorption Near-edge Structural (XANES) | 第30页 |
| ·Single-molecule Fluorescence Imaging Technique | 第30页 |
| ·Different Types of Scavengers | 第30-32页 |
| ·Scavengers for OH Radicals | 第30-31页 |
| ·Scavengers for Holes | 第31页 |
| ·Scavengers for Electrons | 第31-32页 |
| ·Scavengers for O_2 Radicals | 第32页 |
| ·Scavengers for eaq-and H | 第32页 |
| ·Sources of the Active Species | 第32-35页 |
| ·Sources of OH Radicals | 第32-34页 |
| ·Sources of O_2 Radicals | 第34页 |
| ·Sources of eaq | 第34-35页 |
| ·Present Questions | 第35-36页 |
| ·Design of Photocatalysts with High Activity | 第36-43页 |
| ·Modification for Photocatalysts | 第36-41页 |
| ·Effect of Crystal Form | 第36-37页 |
| ·Effect of Particle Size | 第37页 |
| ·Composite of the Semiconductors | 第37-38页 |
| ·Metal and Nonmetal Ion Dopants | 第38-40页 |
| ·Surface Sensitization | 第40-41页 |
| ·Synthesis Method | 第41-43页 |
| ·Hydrothermal Synthesis | 第41页 |
| ·Microwave-assisted Hydrothermal Synthesis | 第41-42页 |
| ·Precipitation Method | 第42-43页 |
| ·Other Methods | 第43页 |
| ·Foundation of Dissertation and Research Scheme | 第43-46页 |
| 2 Experimental | 第46-59页 |
| ·Reagents and Apparatus | 第46-48页 |
| ·Reagents | 第46页 |
| ·Apparatus | 第46-48页 |
| ·Experimental Section | 第48-55页 |
| ·Preparation of Photocatalysts | 第48-50页 |
| ·Hydrothermal Synthesis of Zn_xCd_(1-x)S Nanoparticles | 第48页 |
| ·Microwave Synthesis of Zn_xCd_(1-x)S Nanorods | 第48-49页 |
| ·One Step Preparation of Zn_xCd_(1-x)S/TiO_2Nanocomposites | 第49-50页 |
| ·Preparation of Standard TiO_2-xNx | 第50页 |
| ·Characterizations of Photocatalysts | 第50-55页 |
| ·X-ray Diffraction (XRD) | 第50页 |
| ·N2Adsorption (BET) | 第50-51页 |
| ·UV-vis Diffuse Reflectance Spectroscopy (DRS) | 第51页 |
| ·Transmission Electron Microscopy (TEM) | 第51-52页 |
| ·Liquid Chromatography Mass Spectroscopy (LCMS) | 第52页 |
| ·X-ray Photoelectron Spectroscopy (XPS) | 第52页 |
| ·Total Organic Carbon (TOC) | 第52-53页 |
| ·Photoluminescence Technique using Terephthalic Acid (PL-TA) | 第53页 |
| ·Electron Spin Resonance (ESR) Technique | 第53-54页 |
| ·Fourier Transform Infrared Spectroscopy (FTIR) | 第54页 |
| ·1H Magnetic-angle Spinning (MAS) NMR Spectroscopy | 第54页 |
| ·Tests of Electrochemical Parameters | 第54页 |
| ·Determination of the Flat Band Potential (Vfb) | 第54-55页 |
| ·Aqueous-phase Photocatalytic Activity Measurements | 第55-59页 |
| ·Aqueous-phase Photocatalytic Activity Tests (Visible Light) | 第56-57页 |
| ·Aqueous-phase Photocatalytic Activity Tests (UV Light) | 第57-58页 |
| ·Detection of the Surface Density of Hydroxyl Groups on the Surface of TiO_2 | 第58-59页 |
| 3 Role of Main Active Species in Degradation of Methyl Orange on TiO_2 Photocatalyst | 第59-85页 |
| ·Introduction | 第59-60页 |
| ·Role of Surface Hydroxyl Groups in the Aqueous-phase Photocatalytic Activity of TiO_2 | 第60-73页 |
| ·Experimental Detection of Surface Hydroxyl Groups | 第60-66页 |
| ·Relationship between Hydroxyl Groups and OH Radicals | 第66-68页 |
| ·The Role of Hydroxyl Groups in the Photocatalytic Activity | 第68-73页 |
| ·Detection of the Active Species by Scavengers | 第73-76页 |
| ·The Generation of O_2 and OH Radicals during TiO_2Photocatalysis | 第76-77页 |
| ·The relationship between the active species and the degradation process | 第77-84页 |
| ·Brief Summary | 第84-85页 |
| 4 Specific Analysis of the Active Species on Zn_xCd_(1-x)S and TiO_2Photocatalysts in the Degradation of Dyes | 第85-126页 |
| ·Introduction | 第85-86页 |
| ·Preparation of Zn_xCd_(1-x)S Nanoparticles and Their Photocatalytic Performance under Visible Light Irradiation | 第86-97页 |
| ·XRD, TEM and DRS Investigations | 第86-89页 |
| ·Photocatalytic Activity Investigations | 第89-92页 |
| ·Stability Investigations (XRD, TEM and XPS) | 第92-94页 |
| ·Degradation of Other Dyes | 第94-96页 |
| ·Discussion of the Degradation Mechanism | 第96-97页 |
| ·Microwave Synthesis of Zn_xCd_(1-x)S Nanorods and Their Photocatalytic Activity under Visible Light Irradiation | 第97-109页 |
| ·XRD, TEM, BET and DRS Investigations | 第97-101页 |
| ·Photocatalytic Activity Investigations | 第101-105页 |
| ·Exploration of the Degradation Mechanism | 第105-109页 |
| ·Comparison of the Active Species on Zn_(0.28)Cd_(0.72)S and TiO_2Photocatalysts in the Degradation of Methyl Orange | 第109-124页 |
| ·Comparison of the Degradation Processes | 第109-114页 |
| ·Comparison of the Active Species during Zn_(0.28)Cd_(0.72)S and TiO_2 Photocatalysis | 第114-123页 |
| ·Detection of the Active Species by Scavengers | 第114-116页 |
| ·The Generation of OH Radicals | 第116-119页 |
| ·The Generation of O_2 Radicals and H2O_2 | 第119-121页 |
| ·The Sources of OH Radicals | 第121-123页 |
| ·Comparison of the Degradation Mechanisms | 第123-124页 |
| ·Brief Summary | 第124-126页 |
| 5 New Perspective on the Active Species in the Degradation of Methyl Orange over ZnO and TiO_2Photocatalysts | 第126-139页 |
| ·Introduction | 第126-127页 |
| ·Comparison of the Degradation Processes | 第127-128页 |
| ·Comparison of the Active Species during TiO_2and ZnO Photocatalysis | 第128-137页 |
| ·Detection of the Active Species by Scavengers | 第128-130页 |
| ·Comparison of the Hydroxyl Groups on the Surface of TiO_2and ZnO | 第130-132页 |
| ·The Generation of OH Radicals | 第132-133页 |
| ·The Generation of O_2 -and Role of DO | 第133-136页 |
| ·The Sources of OH Radicals | 第136-137页 |
| ·Brief Summary | 第137-139页 |
| 6 Novel Approach to Enhance Photosensitized Degradation of Rhodamine B under Visible Light Irradiation by the Zn_xCd_(1-x)S/TiO_2Nanocomposites | 第139-156页 |
| ·Introduction | 第139-140页 |
| ·Physicochemical Properties of ZCT Composites | 第140-144页 |
| ·Photocatalytic Activity of ZCT Nanocomposites | 第144-148页 |
| ·Mechanism of the Degradation Process | 第148-155页 |
| ·Brief Summary | 第155-156页 |
| 7 Conclusions and Prospects for Future Works | 第156-159页 |
| ·Main Conclusions of this Dissertation | 第156-158页 |
| ·Prospects for Future Research | 第158-159页 |
| References | 第159-181页 |
| Acknowledgements | 第181-182页 |
| Personal Resume | 第182-183页 |
| List of Publications | 第183-185页 |
