文摘
英文文摘
声明
Chapter one Introduction
1.1 Background to nanotechnology
1.2 Concepts of nanotechnology and nanoscience
1.3 One-dimensional (1D) nanostructures
1.3.1 Nanowires based on bottom-up approach
1.3.2 Properties of Nanowires
1.3.3 Observing, imaging and growth of nanowires
1.4 Background to ceramics materials
1.5 Whiskers
1.5.1 Whiskers reinforced ceramic
1.6 Aluminum borate (Al18B4O33) whiskers
1.7 Aluminum borates nanowires
1.8 Background to magnesium borates
1.8.1 One-dimensional magnesium borate nanostructures
1.9 Motivation and focus of this thesis
Chapter two Instruments used in nanomaterials
2.1 Introduction
2.2 Scanning electron microscopy (SEM)
2.2.1 Energy dispersive X-ray (EDX)
2.3 Transmission Electron Microscopy (TEM)
2.3.1 Selected area electron diffraction (SAED)
2.4 X-Ray Diffraction (XRD)
Chapter three Synthesis of aluminum borate nanowires via a novel flux method
3.1 Introduction
3.2 Experimental
3.2.1 Preparation of the precursor powder
3.2.2 Heating process
3.2.3 Characterization
3.3 Results and discussion
3.3.1 X-ray diffraction analysis
3.3.2 Scanning electron microscopy
3.3.3 Transmission electron microscopy
3.3.4 Energy dispersive x-ray spectrum
3.3.5 Statistics diameter distributions
3.4 The influence of the reaction temperature
3.5 Proposed growth mechanism for Al18B4O33 nanowires using this method
Chapter four From Al4B2O9 nanowires to Al18B4O33: Eu nanorods
4.1 Introduction
4.2 Fabrication of Al4B2O9 nanowires
4.2.1 Synthesis of the precursor powder
4.2.2 Calcinations process
4.2.3 Characterization
4.3 Results and Discussion
4.3.1 X-ray diffraction analysis
4.3.2 Scanning electron microscopy
4.3.3 Transmission electron microscopy
4.3.4 Statistical distribution of the diameter
4.4 Proposed growth mechanism for as-synthesized products Al4B2O9 nanowires
4.5 Luminescence study
4.5.1 Introduction
4.6 Al4B2O9 converted to Al18B4O33: Eu
4.6.1 Experimental
4.7 Results and discussion
4.7.1 X-ray diffraction analysis
4.7.2 Scanning electron microscopy
4.7.3 Transmission electron microscopy
4.7.4 Photoluminescence properties of Al18B4O33: Eu nanowires
Chapter five A facile-controllable route for synthesis single-crystalline Mg2B2O5 nanowire bundles
5.1 Introduction
5.2 Experimental
5.3 Results and discussion
5.3.1 X-ray diffraction analysis
5.3.2 Energy-dispersive X-ray spectrum
5.3.3 Scanning electron microscopy
5.3.4 Transmission electron microscopy
5.4 The influence of citric acid on the morphology control
5.5 The influence of the reaction temperature
5.6 The growth mechanism of Mg2B2O5 nanowire bundles
Chapter six Synthesis and photoluminescence properties of magnesium borate (Mg2B2O5) nanorods
6.1 Introduction
6.2 Experimental
6.3 Characterization
6.4 Results and discussion
6.4.1 X-ray diffraction analysis
6.4.2 Scanning electron microscopy and EDX analysis
6.4.3 Transmission electron microscopy examination
6.4.4 Selected area electron diffraction
6.5 The growth mechanism of Mg2B2O5 nanorods
6.6 Photoluminescence (PL) properties of Mg2B2O5: Eu nanorods
6.6.1 Experimental
6.6.2 Results and discussion
Chapter seven Conclusion and future works
7.1 Conclusion
7.2 Suggestions for future works
References
Publishing papers
Acknowledgements
