臺灣博碩士論文加值系統

本文主要探討以溶膠-凝膠法製備銀/鋁摻雜之二氧化鈦-氧化鋅複合材料之特性。實驗中於(TiO2)0.75-(ZnO)0.25中摻雜不同比例之銀/鋁成分，以掃描式電子顯微鏡、穿透式顯微鏡及X光粉末繞射儀，探討材料的結構特性及表面形貌，同時對材料之光催化活性進行測試。研究結果顯示，二氧化鈦-氧化鋅混合比為0.75/0.25，具有最佳降解效率，於4小時之降解效率為70%，高於純二氧化鈦之56%，其光催化特性之降解效率高出14%。此混合比之二氧化鈦-氧化鋅複合材料摻雜1 mole% 銀時，其4小時之降解效率提升至83%增加13%。但摻雜鋁之二氧化鈦-氧化鋅複合材料，其4小時之降解效率為66%，此比未摻雜稍降4%，XRD檢測發現摻雜銀之二氧化鈦-氧化鋅複合材料之結晶相，除原有未摻雜銳鈦礦相之二氧化鈦及纖鋅礦相之氧化鋅外，另有生成金紅石相之氧化鋅。然而摻雜鋁後之結晶相則有抑制纖鋅礦相之氧化鋅生成，對應光催化效率也有影響。

This study mainly explored the preparation and characteristics of Ag / Al doped Titanium dioxide-Zinc oxide(TiO2-ZnO) composite by sol-gel method. In this experiment, TiO2-ZnO was doped with several proportions of Ag / Al. In order to explore the composite characteristics and surface topography by Scanning electron microscope (SEM), Field-Emission transmission electron microscope (FE-TEM) and X-ray powder diffraction (XRD). In the meantime, it had tested the composite of photocatalytic activity. The research showed that TiO2(0.75)-ZnO(0.25) had the best degradation efficiency. It has 70% degradation efficiency after 4 hours, higher than 56% pure Titanium dioxide. On the other hand, the degradation efficiency of photocatalytic activity higher than 14%. The best degradation efficiency of TiO2(0.75)-ZnO(0.25) composite was doped with 1 mole% Ag. It had increased to 83% than the TiO2(0.75)-ZnO(0.25) composite higer 13% after 4 hours. In contrast, TiO2(0.75)-ZnO(0.25) composite was doped with Al. It had 66% degradation efficiency after 4 hours, that was reduced 4% than the TiO2(0.75)-ZnO(0.25) composite. In the X-ray powder diffraction (XRD) inspection, TiO2(0.75)-ZnO(0.25) composite had forming Rutile besides Anatase and Wurtzite. However, Wurtzite was inhibited formation and reduced effective photocatalytic activity by TiO2(0.75)-ZnO(0.25) composite was doped with Al.

摘 要 I
ABSTRACT II
誌 謝 III
目 錄 III
表 目 錄 VIII
圖 目 錄 IX
符 號 說 明 XII
第一章 緒論 1
1.1 前言. 1
1.2 研究動機與目的 2
1.3 論文概要及架構 3
第二章 文獻回顧 4
2.1溶膠凝膠原理 4
2.1.1 起源 4
2.1.2 定義 4
2.1.3 原理 6
2.1.4 溶膠凝膠法產出材料型態 10
2.2 二氧化鈦 11
2.2.1 特性與應用 11
2.2.2 結構 12
2.2.3 光學性質 14
2.3 氧化鋅 16
2.3.1特性與應用 16
2.3.2結構 16
2.3.3粒徑性質 19
2.4摻雜元素對光催化之影響 20
2.4.1摻雜銀元素 21
2.4.2摻雜鋁元素 22
2.5光催化技術 23
2.5.1基本介紹 23
2.5.2 光催化原理 25
2.5.3 TiO2-ZnO複合材料光催化原理 27
2.5.4 TiO2-ZnO複合材料摻雜銀光催化原理 27
2.5.5 常見汙染物溶液簡易說明與應用 29
第三章 實驗方法與步驟 31
3.1 實驗藥品 31
3.2 實驗製程參數 32
3.2.1製備二氧化鈦TiO2與氧化鋅ZnO混合之製程參數 32
3.2.2製備二氧化鈦與氧化鋅混合及摻雜硝酸銀之製程參數 32
3.2.3製備二氧化鈦與氧化鋅混合及摻雜六水合氯化鋁之製程參數 33
3.3 實驗步驟與流程 33
3.3.1製備二氧化鈦TiO2與氧化鋅ZnO混合及光催化步驟 33
3.3.2製備二氧化鈦TiO2與氧化鋅ZnO混合及摻雜銀或鋁步驟 34
3.4實驗材料之分析 40
3.4.1掃描式電子顯微鏡 40
3.4.2場發射穿透式電子顯微鏡 40
3.4.3 X光繞射分析 41
3.4.4 光催化活性測試(Photocatalytic) 42
3-4-4-1光催化亞甲基藍溶液配置及檢量線 42
3-4-4-2光催化分析 43
3.4.5實驗製程設備 45
第四章 結果與討論 48
4.1 SEM分析 48
4.2 TEM分析 50
4.3 XRD分析 56
4.3.1 TiO2-ZnO複合材料XRD檢驗分析 56
4.3.2 TiO2-ZnO複合材料摻雜Ag之 XRD檢驗分析 57
4.3.3 TiO2-ZnO複合材料摻雜Al之 XRD檢驗分析 58
4.4 光催化分析 60
4.4.1 亞甲基藍溶液3ppm測試吸光度及濃度 60
4.4.2 亞甲基藍溶液3 ppm無添加光觸媒光照測試 60
4.4.3純TiO2與TiO2-ZnO複合材料光觸媒光催化降解實驗 61
4.4.4 TiO2-ZnO複合材料摻雜Ag產出之光觸媒光催化降解實驗 64
第五章 結論 69
5.1 研究結論 69
5.2 未來建議 69
參　考　文　獻 70

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