Ultrasonic wave and Ph enhanced the formation of TiO2 nanotube structure / Nur Aimi Jani … [et al.]

The rapid development in the field of nanostructure semiconducting oxides has stimulated intensive research efforts to understand comprehensively the properties of microstructure titanium dioxide (TiO2) are significantly different as compared to the properties of nanostructure TiO2. It is well known that the properties of TiO2 are further enhanced when they are in nanosize. TiO2 is considered as the most interesting metal oxides for the aforementioned application. The synthesis and characterization of TiO2 nanostructure have received a great attention in recent years. TiO2 is well known as a semiconductor with photocatalytic activities and has great potential in many areas, including environmental purification, gas sensors, photovoltaics, immobilization of biomolecules, and generation of hydrogen gas. Nanotubes are a great interest due to their high surface to volume ratio and size dependent properits. Several recent studies have indicated that TiO2 nanotubes have improved properties compared to any other form of TiO2 for application in photocatalysts, sensing, photoelectrolysis and photovoltaics. nanotube arrays of TiO2 have been produced by a variety of methods including deposition into a nanoporous alumina template, seeded growth and hydrothermal processes. However, this nanotube fabrication routes’ most remarkable properties are highly ordered nanotube arrays made by anodization of titanium in fluoride-based baths the dimension of which can be precisely controlled. Uniform TiO2 nanotube arrays of various pore size, length and wall thickness are easily formed by tailoring electrochemical conditions. Instead of using conventional electrochemical anodization process by magnetic stirring, an alternative method known as sonoelectrochemical process was used in this work due to its simple and cost effectiveness. The significance of using ultrasonic wave is that it has potential to enhance the mobility of ions in electrolyte. This process also can save time and energy. The structural and morphological properties will be discussed in details during poster presentation.