本文研究了鎳和鈷共觸媒對TiO2奈米顆粒光催化性質的影響。在本研究中，以初濕含浸法製備具有 Ni 和 Co 摻雜 的 TiO2 ，並通過紫外光照射 金屬還原 。 光觸媒透過 X 光繞射儀 、 穿透式電子顯微鏡 和 高解像能電子顯微鏡 觀察金屬改質後顆粒的變化。 光催化活性反應之鑑定 是 以 10 ppm 亞甲基藍水 溶液 ( 為光反應標準物 光降解樣品取樣利用紫外 可見光分光光譜儀分析亞甲基藍濃度。由結果表明， 0.05 wt 的 Ni 和 Co 為所有樣品中 活性最高，因此Ni和Co含量會影響催化劑的活性。而 Ni和Co金屬原子可能會 覆蓋在TiO2的表面並導致活性降低 。 鍛燒溫度和反應溫度也 會影響 光催化活性。當催化劑在25度C下以真空烘箱乾燥時， Ni和Co摻雜的 TiO2具有最高的活性。當催化劑在 0℃ 反應時，Ni 和 Co 摻雜的TiO2兩者 有最高的活性。;This thesis highlights the effects of nickel and cobalt cocatalyst on the photocatalytic properties of the TiO 2 nanopowders. In this study, the Ni and Co doped TiO 2 with various amounts of dopants were prepared through incipient wetness impregnation m ethod and reduced by ultraviolet light irradiation. The catalysts were characterized by X ray diffraction, transmission electron microscopy and high resolution transmission electron microscopy, to observe the changes of particles after metal modification . The degradation rate of methylene blue (MB) was used to identify the photocatalytic activity under ultraviolet light (UVC) irradiation and the concentration of MB was analyzed by Ultraviolet Visible spectrophotometer . The results show that the N i and Co am ount could influence the activity of the catalyst. The 0.05 wt. % of Ni and Co showed the highest activity among all samples. Overdoes Ni and Co would cover the surface of TiO 2 and resulted in low activity. The calcination temperature and reaction temperat ure also influenced the photocatalytic activity. Ni and Co doped TiO 2 had the highest activity when the catalyst was dri ed at 30 °C in the vacuum oven . Both of Ni and Co doped TiO 2 had the highest activity when the catalyst reacted at 0 °C. The bared TiO2 had the highest activity when the catalyst reacted at 40 °C.
