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基于电荷分离及光吸收调控的高可见光活性的g-C3N4基纳米光催化剂的合成

Abstract in English第4-6页
Abstract in Chinese第7-18页
Chapter 1 Introduction第18-41页
    1.1 Research background第18-19页
    1.2 Basic principles of semiconductor photocatalysis第19-24页
        1.2.1 Mechanism for photocatalytic degradation of pollutants第21页
        1.2.2 Mechanism for photocatalytic water splitting第21-22页
        1.2.3 Mechanism for photocatalytic CO_2 reduction第22-24页
    1.3 Graphitic carbon nitride as a photocatalyst第24-31页
        1.3.1 Preparation第25-26页
        1.3.2 Advantages第26-27页
        1.3.3 Applications第27-30页
        1.3.4 Shortcomings第30-31页
    1.4 Strategies for improving the photoactivities of g-C_3N_4第31-37页
        1.4.1 Band gap engineering第31-33页
        1.4.2 Coupling metal oxide semiconductors第33-34页
        1.4.3 Co-catalyst loading第34-35页
        1.4.4 Surface sensitization第35-37页
    1.5 Topic motivation and thesis scope第37-39页
    1.6 Aims and objectives of the present study第39-41页
Chapter 2 Experimental Part第41-54页
    2.1 Chemical reagents and apparatus第41-45页
        2.1.1 Chemical reagents第41-43页
        2.1.2 Instruments and apparatus第43-45页
    2.2 Characterization techniques第45-51页
        2.2.1 X-ray powder diffractometry第45页
        2.2.2 UV-vis diffuse reflectance spectroscopy第45-46页
        2.2.3 X-ray photoelectron spectroscopy第46-47页
        2.2.4 Transmission electron microscopy第47-48页
        2.2.5 Steady-state surface photovoltage spectroscopy第48-49页
        2.2.6 Transient-state surface photovoltage spectroscopy第49页
        2.2.7 Fourier transform infrared spectroscopy第49-50页
        2.2.8 Photoluminescence spectroscopy第50-51页
        2.2.9 Kelvin probe measurement第51页
    2.3 Measurement tests第51-54页
        2.3.1 Photoelectrochemical measurement第51-52页
        2.3.2 Photocatalytic activities for pollutants degradation第52页
        2.3.3 Measurement of the amount of hydroxyl free radicals第52-53页
        2.3.4 Active radical trapping experiments第53页
        2.3.5 Liquid chromatography tandem mass spectrometry第53-54页
Chapter 3 Synthesis of Au-(TiO_2/g-C_3N_4) nanophotocatalysts for pollutants degradation第54-78页
    3.1 Introduction第54-55页
    3.2 Effect of TiO_2 on the photoactivity of g-C_3N_4第55-61页
        3.2.1 Preparation of TiO_2/g-C_3N_4 nanophotocatalysts第55-56页
        3.2.2 Structural characterization of TiO_2/g-C_3N_4 nanophotocatalysts第56-58页
        3.2.3 Photoactivities for 2,4-DCP and BPA degradation第58-59页
        3.2.4 Photogenerated charge transfer and separation第59-61页
    3.3 Effect of SPR Au on the photoactivity of TiO_2/g-C_3N_4 nanophotocatalysts第61-77页
        3.3.1 Deposition of Au nanoparticles on TiO_2/g-C_3N_4第61页
        3.3.2 Structural characterization of Au-(TiO_2/g-C_3N_4)第61-65页
        3.3.3 Photoactivities for 2,4-DCP and BPA degradation第65-67页
        3.3.4 Photogenerated charge transfer and separation第67-72页
        3.3.5 Investigation of the active degrading species第72-73页
        3.3.6 Photocatalytic degradation mechanism第73-77页
    3.4 Brief summary第77-78页
Chapter 4 Synthesis of plasmonic Au/SnO_2/g-C_3N_4 nanophotocatalysts for hydrogen evolution第78-101页
    4.1 Introduction第78-79页
    4.2 Experimental part第79-81页
        4.2.1 Synthesis of g-C_3N_4 nanosheets第79页
        4.2.2 Preparation of SnO_2 nanoparticles第79-80页
        4.2.3 Preparation of SnO_2/g-C_3N_4 nanophotocatalysts第80页
        4.2.4 Photodeposition of Au nanoparticles on SnO_2/g-C_3N_4 nanophotocatalysts第80-81页
    4.3 Results and discussion第81-91页
        4.3.1 Structural characterization of Au/SnO_2/g-C_3N_4 nanophotocatalysts第81-84页
        4.3.2 Photoactivities of Au/SnO_2/g-C_3N_4 nanophotocatalysts for H2 evolution第84-86页
        4.3.3 Separation and transfer of photogenerated charges第86-91页
    4.4 Discussion on mechanism第91-100页
    4.5 Brief summary第100-101页
Chapter 5 Synthesis of cobalt phthalocyanine modified g-C_3N_4 nanophotocatalysts for pollutants degradation第101-119页
    5.1 Introduction第101-102页
    5.2 Effect of cobalt phthalocyanine on the photoactivity of g-C_3N_4 nanophotocatalysts第102-107页
        5.2.1 Preparation of Co Pc/g-C_3N_4 nanophotocatalysts第102页
        5.2.2 Structural characterization of Co Pc/g-C_3N_4第102-104页
        5.2.3 Photocatalytic activity for 2,4,6-TCP degradation第104页
        5.2.4 Photogenerated charge transfer and separation第104-107页
    5.3 Effect of phosphate on the photoactivity of g-C_3N_4第107-118页
        5.3.1 Preparation of photocatalysts第107-108页
        5.3.2 Structural characterization and surface composition第108-110页
        5.3.3 Photocatalytic activities for 2,4,6-TCP degradation第110-112页
        5.3.4 Photogenerated charge transfer and separation第112-116页
        5.3.5 Investigation of the active degrading species第116-117页
        5.3.6 Photocatalytic degradation mechanism第117-118页
    5.4 Brief summary第118-119页
Conclusions第119-121页
结论第121-123页
References第123-146页
Acknowledgements第146-147页
Papers published during Ph.D. study第147-148页

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