| Summary: | 碩士 === 國立雲林科技大學 === 環境與安全衛生工程系 === 102 === A high photoactivity of iodine doped titanium dioxide (I-doped TiO2) photocatalysts was synthesized to degrade aqueous bisphenol A (BPA) under visible light(410 nm), ultraviolet light(365 nm) and sunlight has been investigated. The prepared I-doped TiO2 were characterized by scanning electron microscopy(SEM), X-ray diffraction(XRD), UV-visible absorption spectroscopy, and Fourier transform infrared(FTIR) to indicate the mechanism of reaction. The degradation effect of aqueous BPA using I-doped titanium dioxide (I/T = 0.5 mole %) were 86 and 99.7 % under two irradiations of visible and UV light. Similarly, the effects of degradation BPA was 100% under sunlight irradiation. I doped TiO2 with surface dominant I–O–I and I–O–Ti structures, and that act as a electron scavenger capable of inhibiting the rapid recombination of electron–hole pairs. The Recycling test was maintained effectively after ten repeated experiments, which indicate the stability and reusability.
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