| Summary: | 碩士 === 明道大學 === 材料科學與工程學系碩士班 === 102 === TiO2 exhibit photocatalyst and anti-bacterial effects in gaseous and liquid environments. However, TiO2 also have wide band gaps, making the effects only work under the UV light. Also, the use of UV light is harmful to many organics and life forms, further limiting the use of TiO2. Moreover, the electron and hole transports in TiO2 are low. Therefore, increasing the very undesirable electron/hole recombination, which in turn reduces the photocatalyst and anti-bacteria efficiency is important. As a result, doping TiO2 with metallic and/or non-metallic element is being extensive studied to vary the band gap widths and to enhance the separation of the electron/hole.
Unlike the conventionally used methods, in this study research, we will use a microwave-assisted hydrothermal method to dope element into TiO2 beads. Ag will be used for the single element doping. Effects of synthesis conditions on the material characteristics of the resulting doped TiO2 will be studied. The photocatalyst and anti-bacteria effect of the resulting doped TiO2 will be investigated.
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