Preparation of P/TiO2 fixed photocatalysts anddegradation of aqueous 4,4′-isopropylidene diphenol

• Main Authors: Yu-Ren Chen, 陳禹仁
• Other Authors: Chao-Yin Kuo
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/07443166873868441881

碩士 === 國立雲林科技大學 === 環境與安全衛生工程系碩士班 === 101 === Degradation of aqueous 4,4''-isopropylidene diphenol (BPA) using a column reactor with granular P-doped titanium dioxide (4 PT、2 PT、1 PT、0.5 PT、0.1 PT) under artificial light (365 and 410 nm) and sunlight was investigated. The result of UV-Visible spectra analysis indicated that P-doped TiO2 (P/Ti mol radio is 0.001; named 0.1PT) shifted absorption band to 413 nm near the visible light, resulting in the narrower band gap (3.00 eV) to enhance radicals on the surface of P-doped titanium dioxide. In addition, the FTIR and XPS results were found phosphorous bond on P-doped TiO2. In photocatalysis, when reacting 66.5 minutes, under 410 nm and sunlight irradiation, degradation effect of aqueous BPA using P-doped TiO2 (0.1PT) were 69.0 and 93.9%. This result indicated that P-doped TiO2 was suitable using under sunlight irradiation achieving energy-saving. Finally, P-doped TiO2 showed good ability in mineralization and five times repetitious reusing.