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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 劉雅瑄(Ya-Hsuan Liou) | |
| dc.contributor.author | Te-Shun Lin | en |
| dc.contributor.author | 林德軒 | zh_TW |
| dc.date.accessioned | 2021-06-13T02:13:01Z | - |
| dc.date.available | 2016-08-22 | |
| dc.date.copyright | 2011-08-22 | |
| dc.date.issued | 2011 | |
| dc.date.submitted | 2011-08-01 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/30707 | - |
| dc.description.abstract | 本實驗利用價格便宜、製程方便、化學穩定、無毒、且具有良好的光催化效果的二氧化鈦半導體進行電極的製備，首先製備高表面積二氧化鈦電極，並以二氧化鈦本身良好的光催化能力進行光沉積，使金顆粒附著於二氧化鈦電極表面，希望能取代原本昂貴的金電極，也希望藉由二氧化鈦高表面積的特性使反應效率提高。製備電極方面，將鈦板置入含水率3%且含氟離子的電解液中，以電化學的方法電壓60 V、時間0.5 h製備；通入電流的同時，氟離子便會於鈦表面鑽洞形成奈米鈦管，製備完成後去除上部奈米鈦管，則可得到底部直徑約100 nm規則排列之鈦奈米孔洞 (Titanium Nano Hole)，大幅提高鈦板表面積；再以500 oC高溫鍛燒2 h，使鈦奈米洞轉變為二氧化鈦奈米洞(Titanium Dioxide Nano Hole, nh-TiO2)，製備成的二氧化鈦奈米洞不僅擁有較高表面積，且為具備光催化能力的半導體；將二氧化鈦電極浸泡於含金離子濃度10-3 M之溶液中，照射300 nm紫外光180 s，以光沉積法製備成金/二氧化鈦奈米洞電極(Au/nh-TiO2)。
以此電極作為Electro-Fenton法的反應陰極，陽極放置白金板，反應面積陰極比陽極為4：1，並於酸性溶液中通入400 ml/min的氧氣及適當電流，來降解水中汙染物乙醯氨酚(Acetaminophen, APAP)，50 ppm乙醯氨酚可在3 h內被降解完全，反應常數kobs為0.028 min-1，反應較金及石墨電極反應來的佳；可知在Electro-Fenton法反應中Au/nh-TiO2電極產生過氧化氫的效率高於其餘電極，在與亞鐵離子反應後，才可分解出較多的氫氧自由基(OH•)來降解汙染物；而當Electro-Fenton法的降解條件，在反應電流45 mA、亞鐵離子10 ppm、反應溫度20 oC時，反應可縮短至2 h便降解完乙醯氨酚，其反應常數kobs為0.058 min-1。 本實驗製備高表面積Au/nh-TiO2電極，並以Electro-Fenton降解水中汙染物乙醯氨酚，不僅節省實驗成本，還能提高反應效率，更能達到淨化水質目的。 | zh_TW |
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| dc.description.tableofcontents | 摘要 I
Abstract II 圖目錄 VI 表目錄 VIII 第一章 緒論 1 1-1 研究緣起 1 1-2 研究目的與內容 3 第二章 文獻回顧 5 2-1 二氧化鈦 5 2-1-1 二氧化鈦簡介 5 2-1-2 定向二氧化鈦奈米管陣列之製備 7 2-1-3 二氧化鈦奈米洞表面修飾 8 2-1-4 二氧化鈦之應用 11 2-2 Fenton法 12 2-2-1 Fenton法之沿革 12 2-2-2 Fenton法之應用 14 2-3 乙醯氨酚 15 2-3-1 乙醯氨酚簡介 15 2-3-2 高級氧化處理技術降解乙醯氨酚之可能反應途徑 16 第三章 實驗方法及設備 21 3-1 實驗設計 21 3-2 電極的製備及表面修飾 23 3-2-1 電極的製備與前處理 23 3-2-2 電極的表面修飾 25 3-3 電極表面物化特性分析 26 3-3-1 場發射掃描式電子顯微鏡 26 3-3-2 X光繞射分析 27 3-4 批次實驗 28 3-4-1 Electro-Fenton反應系統 28 3-4-2 改變電極材質 29 3-4-3 改變電極之製備條件 30 3-4-4 改變電極表面修飾條件 30 3-4-5 改變反應系統之條件 31 3-5 污染物定量分析 32 3-5-1 紫外光分光光度計分析法測定過氧化氫 32 3-5-2 乙醯氨酚之偵測方法 33 第四章 結果與討論 35 4-1 過氧化氫生成實驗 35 4-2 反應機制探討 37 4-2-1 空白實驗 37 4-2-2 改變電極材質 38 4-3 電極之製備 41 4-3-1 電極之製備條件及其表面形貌 41 4-3-2 電極之表面修飾與分析 47 4-4 Electro-Fenton法 54 4-4-1 亞鐵離子濃度 54 4-4-2 反應溫度 57 4-4-3 反應電流 59 4-5 電極之可重複使用性 61 4-6 中間產物之探討 62 第五章 結論與建議 64 5-1 結論 64 5-2 建議 66 第六章 參考文獻 67 附錄 實驗數據 76 圖目錄 圖2-1 (a)金紅石, (b)銳鈦礦結晶構造 5 圖2-2 二氧化鈦相圖 6 圖2-3 二氧化鈦經光激發產生電子、電洞分離圖 6 圖2-4 四氯金酸離子團與pH關係圖 10 圖2-5 乙醯氨酚結構圖 15 圖2-6 乙醯氨酚降解機制簡圖 18 圖3-1 實驗流程圖 22 圖3-2 製備奈米鈦管儀器圖 24 圖3-3 氟離子刻蝕鈦板示意圖 25 圖3-4 降解反應儀器圖 29 圖4-1 電流大小對生成過氧化氫反應圖 35 圖4-2 過氧化氫與亞鐵離子反應圖 36 圖4-3 過氧化氫空白實驗降解乙醯氨酚反應圖 37 圖4-4 亞鐵離子空白實驗降解乙醯氨酚圖 38 圖4-5 不同電極降解乙醯氨酚反應圖 39 圖4-6 不同電極降解乙醯氨酚殘餘量及反應常數圖 39 圖4-7 (a)鈦板與鈦管 (b)鈦管頂部孔道 (c)鈦管底部 (d)鈦板底部孔洞 42 圖4-8 nh-Ti製備時間對乙醯氨酚降解反應圖 43 圖4-9 nh-Ti製備電壓對乙醯氨酚降解反應圖 44 圖4-10 nh-Ti製備溫度對乙醯氨酚降解反應圖 45 圖4-11 nh-Ti電解液含水率對乙醯氨酚降解反應圖 46 圖4-12 鈦板鍛燒溫度由左到右分別為400、450、500 oC 48 圖4-13 鈦板鍛燒溫度高低對二氧化鈦晶型改變之XRD圖 48 圖4-14 nh-Ti鍛燒溫度對乙醯氨酚降解反應圖 49 圖4-15 (a)規則排列nh-TiO2 (b)光沉積後Au/nh-TiO2 50 圖4-16 nh-Ti、nh-TiO2及Au/nh-TiO2之XRD比較圖 50 圖4-17 EDS掃描範圍及測定點位 51 圖4-18 EDS測定點位元素成份分佈圖 52 圖4-19 Au/nh-TiO2光沉積金離子溶液濃度對乙醯氨酚降解反應圖 53 圖4-20 Au/nh-TiO2光沉積時間對乙醯氨酚降解反應圖 53 圖4-21 亞鐵離子濃度對乙醯氨酚降解反應圖 55 圖4-22 亞鐵離子濃度對乙醯氨酚降解反應常數圖 56 圖4-23 反應溫度對乙醯氨酚降解反應圖 58 圖4-24 反應溫度對乙醯氨酚降解反應常數圖 58 圖4-25 反應電流對乙醯氨酚降解反應圖 59 圖4-26 反應電流對乙醯氨酚降解反應常數圖 60 圖4-27 Au/nh-TiO2重複降解乙醯氨酚反應圖 61 圖4-28 Au/nh-TiO2重複實驗之反應常數圖 62 圖4-29 乙醯氨酚降解副產物圖 63 表目錄 表4- 1 nh-Ti不同製備條件反應kobs 47 表4- 2 EDX各點位元素所占百分比 52 | |
| dc.language.iso | zh-TW | |
| dc.subject | 光催化 | zh_TW |
| dc.subject | 二氧化鈦 | zh_TW |
| dc.subject | 電-芬頓法 | zh_TW |
| dc.subject | 乙醯氨酚 | zh_TW |
| dc.subject | 奈米金顆粒 | zh_TW |
| dc.subject | Au nano-particle | en |
| dc.subject | TiO2 | en |
| dc.subject | photocatalysis | en |
| dc.subject | acetaminophen | en |
| dc.subject | Electro-Fenton | en |
| dc.title | 製備Electro-Fenton法之Au/TiO2奈米洞電極降解水中乙醯氨酚 | zh_TW |
| dc.title | Electro-Fenton prcoess using Au/nano-hole-TiO2 electrode for acetaminophen degradation in aqueous solution | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 99-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 賈儀平(Yee-Ping Chia),鄧茂華(Mao-Hua Teng),侯嘉洪(Chia-Hung Hou) | |
| dc.subject.keyword | 二氧化鈦,電-芬頓法,乙醯氨酚,奈米金顆粒,光催化, | zh_TW |
| dc.subject.keyword | TiO2,Electro-Fenton,acetaminophen,Au nano-particle,photocatalysis, | en |
| dc.relation.page | 83 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2011-08-02 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 地質科學研究所 | zh_TW |
| 顯示於系所單位： | 地質科學系 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| ntu-100-1.pdf 未授權公開取用 | 1.99 MB | Adobe PDF |
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