Formation of self-organized ZrO2 nanotubes by electrochemical process

Alibediri, Nurazreen (2015) Formation of self-organized ZrO2 nanotubes by electrochemical process. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This project studies is the formation of self-organized ZrO2 nanotubes by electrochemical process. The title of this research has stated clearly, the main purpose of this work. The study of ZrO2 nanotubes is chosen due to their various promising application of ZrO2 nanotubes that have widely investigated by many researchers in over the world. The study of nanomaterials is recommended as their development is parallel to the requirement demand in technology and processes. In this thesis, there are three stated research objectives; to synthesize ZrO2 nanotubes by electrochemical process, to investigate the effects of anodic parameters on ZrO2 nanotubes hence to obtain an optimum anodization condition and last but not least to study the photocatalytic properties in ZrO2 nanotubes produced. Generally, anodization involve of electrochemical process to make an oxide layer of thin film under anodization condition. The characterization methods used to investigate the morphology and structure of the formed nanotubes are by using Scanning Electron Microscope (SEM), X-ray diffraction and Energy Dispersive X-ray spectrometer. Then, the photodegradation test by degradation of Methyl Orange is done to evaluate the photocatalytic properties of the ZrO2 nanotubes. The results of the structures are in formed of spongy-like nanoporous structure. The optimum carbonate content in aqueous and organic electrolyte is 0.3 and 0.5 g of Na2CO3 respectively. After annealed, the crystallization increased for both samples. Last but not least, the highest degradation rate of methyl orange is showed when used annealed sample of 0.3 g of Na2CO3 formed in aqueous electrolyte.

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