| Summary: | 碩士 === 國立高雄應用科技大學 === 化學工程與材料工程系 === 98 === Recently, many efforts have devoted to investigate titanium dioxide, due to it has the advantages of high chemical stability, nontoxicity, and relatively low-price. This study lies in the preparation of titanium dioxide photocatalyst with high performance. The impregnation method was employed to synthesize modification of phosphorus doped titanium dioxide in this study. The photocatalytic activity was measured by the degradation of methylene blue, methyl orange and Rhodamine B, expected the improvement of photocatalytic activity after doped phosphorus.
Phosphorus doped commercial TiO2 photocatalyst (Degussa P-25) were characterized by Fourier Transform Infrared Spectrometer (FTIR), Wide Angle X-ray Diffraction (WA-XRD), and Thermo Gravimetric Analysis (TGA). The morphology of synthesized product was observed by Scanning Electron Microscopy (SEM) The photocatalytic activity of synthesized product (P-Degussa P-25) was evaluated by measuring the degradation of methylene blue and methyl orange and Rhodamine B, under UV irradiation. the variation of methylene blue, methyl orange and Rhodamine B concentration was measured by Ultraviolet and Visible Spectroscopy (UV-VIS).
The results show that the modification titanium dioxide (P- Degussa P-25) can degrade the methylene blue, the methyl orange and the rhodamine dye more efficient than unmodified P-25.
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