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Studies on the Synthesis, Characterization, Growth Mechanism and Properties of One-dimensional Metal Borates Nanostructures

摘要第5-6页
Abstract第6-7页
Chapter one Introduction第11-27页
    1.1 Background to nanotechnology第11页
    1.2 Concepts of nanotechnology and nanoscience第11-12页
    1.3 One-dimensional (1D) nanostructures第12-15页
        1.3.1 Nanowires based on bottom-up approach第13页
        1.3.2 Properties of Nanowires第13-15页
        1.3.3 Observing, imaging and growth of nanowires第15页
    1.4 Background to ceramics materials第15-17页
    1.5 Whiskers第17-18页
        1.5.1 Whiskers reinforced ceramic第18页
    1.6 Aluminum borate (Al_(18)B_4O_(33)) whiskers第18-19页
    1.7 Aluminum borates nanowires第19-22页
    1.8 Background to magnesium borates第22-25页
        1.8.1 One-dimensional magnesium borate nanostructures第22-25页
    1.9 Motivation and focus of this thesis第25-27页
Chapter two Instruments used in nanomaterials第27-32页
    2.1 Introduction第27页
    2.2 Scanning electron microscopy (SEM)第27-29页
        2.2.1 Energy dispersive X-ray (EDX)第28-29页
    2.3 Transmission Electron Microscopy (TEM)第29-30页
        2.3.1 Selected area electron diffraction (SAED)第29-30页
    2.4 X-Ray Diffraction (XRD)第30-32页
Chapter three Synthesis of aluminum borate nanowires via a novel flax method第32-45页
    3.1 Introduction第32-33页
    3.2 Experimental第33-35页
        3.2.1 Preparation of the precursor powder第33-34页
        3.2.2 Heating process第34-35页
        3.2.3 Characterization第35页
    3.3 Results and discussion第35-41页
        3.3.1 X-ray diffraction analysis第35-36页
        3.3.2 Scanning electron microscopy第36-39页
        3.3.3 Transmission electron microscopy第39-40页
        3.3.4 Energy dispersive x-ray spectrum第40页
        3.3.5 Statistics diameter distributions第40-41页
    3.4 The influence of the reaction temperature第41-44页
    3.5 Proposed growth mechanism for Al_(18)B_4O_(33) nanowires using this method第44-45页
Chapter four From Al_4B_2O_9 nanowires to Al_(18)B_4O_(33): Eu nanorods第45-60页
    4.1 Introduction第45页
    4.2 Fabrication of Al_4B_2O_9 nanowires第45-47页
        4.2.1 Synthesis of the precursor powder第45页
        4.2.2 Calcinations process第45-46页
        4.2.3 Characterization第46-47页
    4.3 Results and Discussion第47-51页
        4.3.1 X-ray diffraction analysis第47页
        4.3.2 Scanning electron microscopy第47-49页
        4.3.3 Transmission electron microscopy第49-51页
        4.3.4 Statistical distribution of the diameter第51页
    4.4 Proposed growth mechanism for as- synthesized products Al_4B_2O_9 nanowires第51-52页
    4.5 Luminescence study第52-53页
        4.5.1 Introduction第52-53页
    4.6 Al_4B_2O_9 converted to Al_(18)B_4O_(33): Eu第53页
        4.6.1 Experimental第53页
    4.7 Results and discussion第53-60页
        4.7.1 X-ray diffraction analysis第53-54页
        4.7.2 Scanning electron microscopy第54-55页
        4.7.3 Transmission electron microscopy第55-56页
        4.7.4 Photoluminescence properties of Al_(18)B_4O_(33): Eu nanowires第56-60页
Chapter five A facile-controllable route for synthesis single-crystalline Mg_2B_2O_5 nanowire bundles第60-68页
    5.1 Introduction第60页
    5.2 Experimental第60-61页
    5.3 Results and discussion第61-64页
        5.3.1 X-ray diffraction analysis第61-62页
        5.3.2 Energy-dispersive X-ray spectrum第62页
        5.3.3 Scanning electron microscopy第62-63页
        5.3.4 Transmission electron microscopy第63-64页
    5.4 The influence of citric acid on the morphology control第64-65页
    5.5 The influence of the reaction temperature第65-67页
    5.6 The growth mechanism of Mg_2B_2O_5 nanowire bundles第67-68页
Chapter six Synthesis and photoluminescence properties of magnesium borate (Mg_2B_2O_5) nanorods第68-79页
    6.1 Introduction第68页
    6.2 Experimental第68页
    6.3 Characterization第68-69页
    6.4 Results and discussion第69-73页
        6.4.1 X-my diffraction analysis第69页
        6.4.2 Scanning electron microscopy and EDX analysis第69-70页
        6.4.3 Transmission electron microscopy examination第70-72页
        6.4.4 Selected area electron diffraction第72-73页
    6.5 The growth mechanism of Mg_2B_2O_5 nanorods第73-74页
    6.6 Photoluminescence (PL) properties of Mg_2B_2O_5: Eu nanorods第74-79页
        6.6.1 Experimental第74-75页
        6.6.2 Results and discussion第75-79页
            6.6.2.1 X-ray diffraction analysis第75-76页
            6.6.2.2 Energy dispersive X-ray analysis第76页
            6.6.2.3 Transmission electron microscopy第76-77页
            6.6.2.4 Photoluminescence investigation第77-79页
Chapter seven Conclusion and future works第79-82页
    7.1 Conclusion第79-80页
    7.2 Suggestions for future works第80-82页
References第82-86页
Publishing papers第86-89页
Acknowledgements第89页

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