臺灣博碩士論文加值系統

利用微胞水熱法製備不同比例多孔性Ni(II)/TiO2光觸媒，經由XRD測定，發現其結晶型態皆以銳鈦礦為主。並探討對RB5及RO16偶氮染料進行光降解之研究，實驗結果顯示，1%之Ni(II)/TiO2光降解最佳。因此選用1%之Ni(II)/TiO2光觸媒進行平衡等溫吸附及光降解動力學之實驗。平衡等溫吸附實驗，顯示對RB5及RO16染料皆符合Langmuir平衡等溫單層吸附模式。照射不同波長580nm和254nm，對RB 5和RO 16偶氮染料降解率分別從18%提升至99%及由12%提升至87%；改變Ni(II)/TiO2劑量由0.1 mg/mL至0.5 mg/mL，對RB 5和RO 16偶氮染料降解率分別從44%提升至81%及由42%提升至68%；改變染料初濃度由0.1 mM至0.3 mM，對RB 5和RO 16偶氮染料降解率分別從97%下降至80%及由96%下降至74%；在染料pH 10.0降至pH 2.0時，對RB 5和RO 16偶氮染料降解率分別從35%提升至93%及由33%提升至90%，其降解動力學皆符合二級動力學模式。並在添加受質實驗，結果顯示添加受質(KBrO3、(NH4)2S2O8) 對RB 5及RO 16染量降解率分別從12%提升至80%、12%提升至75%及由10%提升至89%、10%提升至83%，因此添加受質有助於光觸媒對偶氮染料之降解率。

Mesoporous Ni(II)/TiO2 photocatalysts were synthesized by using the micelle hydrothermal process with different molar ratio of Ni/Ti. It was found by XRD that the crystalline states were main anatase type, The results showed that 1% Ni(II)/TiO2 had higher of photodegradation for RB5 and RO16 dyes. Therefore, 1% Ni(II)/TiO2 was used for adsorption and photodegradation of RB5 and RO16 dyes. Adsorption isotherm experiments of RB5 and RO16 dyes were in compliance with Langmuir monolayer adsorption process. Radiation at different wavelengths of 580 and 254nm, the degradation of RB 5 and RO 16 increased from 18% to 99% and from 12% to 87%, respectively. With the increase of 1% Ni(II)/TiO2 dose from 0.1 mg/mL to 0.5 mg/mL, the degradation of RB 5 and RO 16 increased from 44% to 81% and from 42% to 68%, respectively; with the increase of initial dye concentration from 0.1 mM to 0.3 mM, the degradation of RB 5 and RO 16 decreased from 97% to 80% and from 96% to 74%, respectively; when pH reduced from 10.0 to pH 2.0, the photodegradation of RB 5 and RO 16 dyes increased from 35% to 93% and 33% to 90%, respectively. The results of kinetic study showed to follow the second-order kinetic model. In addition of electron acceptors (KBrO3 and (NH4)2S2O8), the degradation of RB 5 and RO 16 increased from 12% to 80%, 12% to75% and from 10% to 89%, 10% to 83%, respectively.

摘要 I
英文摘要 II
目次 III
表目錄 VI
圖目錄 VII
第一章 前言 1
1.1 研究起源 1
1.2 研究動機與內容 1
1.2.1 研究動機 1
1.2.2 研究內容 2
第二章 文獻回顧 4
2.1 奈米光觸媒 4
2.1.1 光觸媒催化原理 4
2.1.2 二氧化鈦簡介 4
2.2 光觸媒之製備 6
2.2.1 溶膠凝膠法 6
2.2.2化學氣相沉積法 7
2.2.3液相沉積法 8
2.2.4 微胞水熱法 9
2.3光觸媒之改質 9
2.3.1 添加貴重金屬 10
2.3.2 複合半導體 10
2.3.3 表面敏化 12
2.3.4 摻雜過度金屬 12
2.4染料簡介 13
2.4.1 偶氮染料 13
2.4.2 本研究使用之染料 13
2.5 平衡等溫吸附探討 14
2.6 光降解動力學探討 16
第三章 實驗材料與方法 18
3.1 實驗藥品 18
3.2 實驗儀器 19
3.3 實驗步驟 20
3.3.1 兩種偶氮染料檢量線 20
3.4 多孔性金屬/TiO2之製備 21
3.4.1 直接添加法 21
3.4.2 浸漬法 23
3.5 吸附實驗 25
3.5.1吸附實驗流程 25
3.5.2吸附實驗方法 26
3.6 光降解實驗 27
3.6.1光降解實驗流程 27
3.6.2 光降解實驗方法 28
3.7 X-ray繞射量測 29
第四章 結果與討論 31
4.1偶氮染料UV吸收光譜及檢量線 31
4.1.1 Reactive Black 5(RB 5) 31
4.1.2 Reactive Orange 16(RO16) 33
4.2 不同製備方法合成之多孔性金屬/TiO2之XRD測定 34
4.2.1 直接添加法製備之多孔性金屬/TiO2之XRD 34
4.2.2 浸漬法製備之多孔性金屬/TiO2之XRD 35
4.3 不同製備方法合成之多孔性金屬/TiO2吸附探討 37
4.4 不同多孔性金屬/TiO2光降解效率探討 38
4.4.1 不同製備方法 38
4.4.2 不同比例之Ni(SO)4/TiO2 38
4.5 平衡等溫吸附行為探討 39
4.6 光降解動力學探討 41
4.6.1 不同比率合成之金屬/TiO2影響 41
4.6.2 不同波長影響 42
4.6.3 劑量之影響 44
4.6.4 初濃度影響 47
4.6.5 pH值影響 49
4.7 添加受質影響 52
第五章 結論 55
參考文獻 57

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