| Summary: | 碩士 === 臺北市立教育大學 === 地球環境暨生物資源學系(含環境教育與資源碩士班) === 100 === The research by means of the concept of Life Cycle Assessment (LCA) is based on the different material fabricated processing by both organic dye photocatalytic
decomposition and antibacterial abilities. With the aspect of environmental friendliness, the researcher collects complete processes of different doping modified
Titania nanotubes to estimate the pollution emissions and environmental impacts on both producing processes and the using stages as the references of environmental designs. With LCA, the concepts of environmental designs can be emerged during the products research and development process, in order to develop and design green
products, which are environmentally friendly and conformed to environmental concepts and achieve the targets of environmental action and the ability of problems
solving, which are taken seriously by governments and the multitude. The researcher adopts anodic titanium oxidization method to modify the material processing with TiO2 nanotubes. Adopting different methods of modified TiO2 nanotubes is intended to increasing and absorbing the wavelength range of visible light irradiation and raised the usage efficiencies of sunlight and photocatalytical reaction. In the meantime, the researcher establishes life cycle inventory (LCI) with LCA tool to comprehend the environmental friendliness of different doping modifies
material processing on TiO2 nanotube thinfilms. Nowadays, many researches on doping with Titania dioxide mainly focus on photocurrent effect, however infrequently probing into abilities of their photocatalytic decomposition and
antibacterial properties. In the using stages for the fabricated doping materials, the researcher focuses on analysis and comparison with the abilities of photocatalytic
decomposition and antibacterial properties.
The results demonstrate that platinum (Pt) certainly could shift the absorption range from ultraviolet to visible light area and raises up the decay abilities of methylene blue and antibacterial properties. The rates of methylene blue
decomposition on different doping methods of TiO2 nanotubes are Pt、N、Ag and Tungsten (W), respectively. The best materials for antibacterial properties under the
sunlight illuminated in 30 minutes are TiO2 nanotubes doped with Ag and N, which the efficiencies of antibacterial properties can be over 99%. According to the analysis results from LCA software SimaPro, the most environmentally friendly photocatalytic material is Titanium dioxide thinfilms which doped with Pt, and the next is doped with nitrogen. Nevertheless the worst environmentally friendly photocatalytic material is Ag-doped and the environmental
impact is higher than the other two doping methods.
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