本研究主要利用紫外光發光二極體為光源，在泥漿反應器進行甲酚水溶液光催化分解，並探討各種實驗操作因子(光強度、二氧化鈦添加量、酸鹼度、初始甲酚濃度和週期性照射)對光利用率及甲酚分解行為的影響。由實驗結果發現，較高的紫外線光強度、溶氧量及酸鹼度都有促進甲酚降解的效果，而初始濃度效應大致符合Langmuir-Hinshelwood模式。此外，以紫外光發光二極體週期性照射光觸媒，能有效降解甲酚及提升光利用率，達到節能的目的。
以光還原法將鉑和銀與二氧化鈦結合，製備鉑/二氧化鈦和銀/二氧化鈦兩種光觸媒。觸媒之物化特性分析項目包括：BET、XRD、 XPS、SEM、DRS、PL。結果發現鉑/二氧化鈦和銀/二氧化鈦皆能有效提高光觸媒之可見光的吸收。在薄膜反應器以鉑/二氧化鈦和銀/二氧化鈦進行甲酚水溶液光催化分解，並探討各種實驗操作因子(鉑和銀添加量、鍛燒溫度、酸鹼度、初始甲酚濃度)對光利用率及甲酚分解行為的影響。由結果顯示，不論在可見光或紫外光的照射下，以0.5％重量百分比的鉑和銀添加量之光觸媒有最佳的光活性。

UV-LED was used in this investigation as the light source for the photocatalytic decomposition of o-cresol in aqueous solution. The effect of various experimental parameters (light intensity, catalyst loading, pH level, initial o-cresol concentration and controlled periodic illumination) on the quantum yield and temporal decomposition behavior of o-cresol were investigated by UV-LED/TiO2 process in a slurry reactor. The photocatalytic decomposition of o-cresol with the UV-light emitting diodes light could be well modeled by the Langmuir-Hinshelwood kinetic equation.
Platinum and silver deposited TiO2 films were prepared on quartz substrates for the photodecomposition of o-cresol. Platinum and silver deposited on TiO2 photocatalysts were characterized by Brunauer-Emmett-Teller surface area measurement (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), diffuse reflectance UV-Vis spectra (DRS) and photoluminescence (PL) emission spectra. The results indicated that the deposition of Ag/TiO2 and Pt/TiO2 promoted the optical absorption in the visible region and made it possible to be excited by visible light. The characteristics of Ag/TiO2 and Pt/TiO2 and the temporal behavior of o-cresol decomposition by Ag/TiO2 and Pt/TiO2 photocatalysis under visible light irradiation were investigated. The study on the influence of content of platinum, silver, pH values, calcination temperature, the characteristics of Ag/TiO2 and Pt/TiO2 and temporal decomposition behavior of o-cresol under visible light irradiation have been investigated.

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