ABSTRACT
TiO2 nanostructures have a wide range of environmental and energy applications. Nanostructured TiO2 is a promising original production material for many applications because of its high specific area and electronic semiconductor properties, including photocatalytic, photochromic, photovoltaic, electroluminescence, electrochromic devices and sensors. The antifogging, antibacterial, and self-cleaning functions of TiO2-coated materials are obtained without using any chemicals, but with only UV sunlight and rainwater. The construction of practical purification systems for wastewater from agriculture and polluted soil has been successful with volatile organic compounds, which were based on TiO2 photocatalysts and use only solar light. The TiO2 nanotube provides excellent matrices for the co-adsorption of horseradish peroxidase (HRP) and thionine, where the adsorbed HRP effectively retains its bioactivity on these TiO2 nanotube arrays. Moreover, the titanium dioxide thin film has shown an ability to decompose organic compounds, including Escherichia coli cells in water treatment.
