臺灣博碩士論文加值系統

由於其寬帶結構、長期穩定性、水溶性極低、無毒性和低成本，TiO2已經成為各種應用中最有潛力的光催化劑之一。在不同礦物形式的TiO2中，銳鈦礦是實際廢水處理中最活躍的半導體。使用TiO2的光催化降解過程提供了優點，包括不形成污泥，將污染物完全轉化為相對無害的最終產物。
染料在許多行業中的使用量日益增加，導致大量染料廢水處理量的增加。紡織行業染料污染物處理不當造成嚴重的環境問題和公眾健康問題。據估計，染色和整理過程中染料的約15 ％會丟失，隨後作為廢水釋放。隨著氧化降解的大量發展，各種先進的氧化技術，包括光催化、臭氧分解、聲催化光芬頓、光電芬頓技術等已經成為破壞頑固化合物的技術之一。
迄今為止，已經深入研究了各種預期應用中的TiO2光催化性能的研究，即摻雜劑添加、合成技術改性和異質複合材料結構。在本研究中，TiO2/Fe-ZSM5複合材料的光催化活性將成為光催化劑，並且將確定最佳操作參數。
本實驗在pH值為9，RhB濃度為5 ppm，光強度為538 w/m2，TiO2/Fe-ZSM5添加量為0.5 g/L時，有最佳降解效率。

TiO2 has served as one of the most promising photocatalysts for various applications due to its wide band structure, long-term stability, very low aqueous solubility, nontoxicity and low cost features. Among different mineral forms of TiO2, anatase is the most active semiconductor for practical wastewater treatment. Photocatalytic degradation process using TiO2 offers advantages including no formation of sludge, complete conversion of contaminants to relatively harmless end products, reuse availability, and simultaneous removal of both organic and inorganic pollutants.
The increasing usage of dyes in numerous industries has led to a rise in the disposal of large amounts of dye wastewater. Improperly disposal of dye pollutants from textile industries poses serious environmental problems and public health concerns. It is estimated that around 15% of the dye is lost during dyeing and finishing processes and subsequently released as wastewaters. Along with massive development in the oxidative degradation, various advanced oxidation processes including photocatalysis, ozonolysis, sonocatalysis, photo-Fenton, photo electro-Fenton processes etc. have emerged as popular techniques to destroy recalcitrant compounds from wastewater.
To date, strategies tailing TiO2 photocatalytic performance for various intended applications have been intensively studied, namely, dopants addition, synthetic technique modification, and heterogeneous composite construction. In the present study, the photodcatalytic activity of TiO2/Fe-ZSM5 composites will be systematic accessed and the optimum operating parameters (e.g., dye concentration, pH, catalyst loading, and dopant ratio, etc.) will be identified.
The optimum degradation condition was obtained at pH 9, the concentration of RhB at 5 ppm, the light intensity at 538 w/m2, and catalyst loading (TiO2/Fe-ZSM5) at 0.5 g/L.

摘要 i
Abstract ii
目 錄 iii
表目錄 vi
圖目錄 vii
第一章 緒論 1
第二章 文獻回顧 3
2-1染整廢水概述 3
2-2羅丹明B概述 7
2-3 半導體概述 9
2-3-1 半導體性質與分類 9
2-3-2 半導體之選擇 10
2-4二氧化鈦概述 11
2-4-1 二氧化鈦晶體結構與特性 11
2-4-2 二氧化鈦光催化降解染料相關文獻 12
2-4-3 二氧化鈦改質 13
2-5沸石概述 14
2-5-1 沸石特性與分類 14
2-6 ZSM-5概述 16
2-6-1 ZSM-5之改質 17
2-7光催化反應 19
2-7-1 光催化反應原理 19
2-7-2 光催化反應之應用 19
2-7-3 二氧化鈦光催化反應機制 22
第三章 研究架構與方法 24
3-1研究架構 24
3-2實驗藥品 27
3-3實驗設備及分析儀器 28
3-4實驗流程 29
3-4-1 光觸媒製備 29
3-4-2 光催化實驗 32
3-5分析項目與方法 34
3-5-1 表面特性分析儀器 34
3-5-2 樣品分析儀器 35
第四章 結果與討論 37
4-1 光觸媒之特性分析 37
4-1-1 場發射掃描式電子顯微鏡分析 37
4-1-2 高解析X光繞射儀分析 48
4-1-3 傅立葉轉換紅外光線光譜儀分析 51
4-1-4 紫外光可見光分光光譜儀分析 53
4-2 光催化實驗 54
4-2-1背景實驗 54
4-2-2 不同初始pH值 55
4-2-3 不同Fe含量 58
4-2-4 不同TiO2/Fe-ZSM5光觸媒添加量 60
4-2-5 不同初始濃度 62
4-2-6 不同觸媒 64
4-2-7 不同光強度 66
4-2-8 光觸媒之穩定性 68
4-3羅丹明B降解之紫外光可見光光譜 69
4-4羅丹明B光催化降解機制 71
第五章 結論與建議 72
5-1結論 72
5-2建議 73
參考文獻 74

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