This thesis focuses on the hydrothermal synthesis of different ZnO nanostructures where rational control over their morphology allows for the optimization of the ยท different morphologies for a range of sensing applications. ZnO nanostructures with different dimensionalities have been synthesized through low temperature hydrothermal techniques. One dimensional ZnO NW s have been synthesized with and without the assistance of a seed layer, with a higher degree of control over their structure, morphology, density and dimensions. The large scale production of two dimensional ZnO nanodisks with a high fi.-action of exposed polar mcets have also been produced through using zinc counter ions with preferential capping capabilities on defined mcets. Furthermore, using a multistage hydrothermal synthesis, a range of three dimensional hierarchical ZnO nanostructures grown from initial mono-morphological ZnO nanostlUctmes/seeds has been reported. The growth parameters, such as the nutlient concentration, quantity of polyethylenirnine, growth time, and zinc counter ions have had a substantial impact on the morphological properties of the grown structures.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:616927 |
| Date | January 2014 |
| Creators | Alenezi, Mohammad Rabia |
| Publisher | University of Surrey |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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