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論文名稱 Title |
無金屬催化化學氣相沉積法合成含氮奈米碳管 “Synthesis of nitrogen-doped carbon nanotubes without metal catalysts” using CVD method |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
97 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2013-07-26 |
繳交日期 Date of Submission |
2013-07-28 |
關鍵字 Keywords |
含氮奈米碳管、竹節狀結構、化學氣相沉積 Nitrogen-doped carbon nanotubes, chemical vapor deposition method |
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統計 Statistics |
本論文已被瀏覽 5708 次,被下載 89 次 The thesis/dissertation has been browsed 5708 times, has been downloaded 89 times. |
中文摘要 |
使用化學氣相沉積的方法,以吡啶前驅物,吡啶與乙腈的混合物以及吡啶與二甲基甲醯胺的混合物 (作為碳源與氮源)來製備含有氮摻雜的奈米碳管。第一系列以吡啶作為一種添加劑,可藉由調整吡啶的注射量來控制含氮奈米碳管的結構中的結構和氮的摻雜量。掃描電子顯微鏡的觀察顯示,吡啶的注射量逐漸增加,奈米碳管的直徑也逐漸增加。穿透電子顯微鏡的研究顯示,加入吡啶會促進含氮奈米碳管結構中有竹節狀結構的形成。X射線光電子光譜分析證明含氮奈米碳管結構中的含氮量變化在2.8至7.9 %。 第二系列以乙腈作為一種添加劑,可藉由調整乙腈的濃度來控制含氮奈米碳管的結構和氮的摻雜量。掃描電子顯微鏡的觀察顯示,當乙腈的濃度逐漸增加時,奈米碳管的直徑也會逐漸降低。X射線光電子光譜分析證明含氮奈米碳管結構中的含氮量變化在7.17至8.18 %。拉曼光譜的研究顯示缺陷峰除以石墨峰的比值會隨著乙腈的濃度增加也逐漸增加。 第三系列以二甲基甲醯胺作為一種添加劑,可藉由調整二甲基甲醯胺的濃度來控制含氮奈米碳管的結構和氮的摻雜量。掃描電子顯微鏡的觀察顯示,當二甲基甲醯胺會增加時,奈米碳管的直徑也會逐漸增加。X射線光電子光譜分析證明含氮奈米碳管結構中的含氮量變化在4.77至7.47 %。拉曼光譜的研究顯示缺陷峰除以石墨峰的比值會隨著二甲基甲醯胺的濃度增加而逐漸降低。 |
Abstract |
Nitrogen-doped carbon nanotubes were prepared by chemical vapor deposition method from a precursor pyridine, and mixtures of pyridine and acetonitrile, or pyridine and dimethylformamide (as a dual supplier of carbon and nitrogen). The first series, scanning electron microscopy observation showed that the addition of pyridine increased the nanotube diameter. Transmission electron microscopy study indicated that the addition of pyridine promoted the formation of a bamboo-like structure in CNx. X-ray photoelectron spectroscopy analysis demonstrated that the nitrogen content varied from 2.8 to 7.9 at.% in CNx obtained with different pyridine injection volume. The second series, SEM observation showed that the addition of acetonitrile decreased the nanotube diameter. XPS analysis demonstrated that the nitrogen content varied from 7.17 to 8.18 at.% in CNx obtained with different acetonitrile concentrations. Raman spectra study showed that the intensity ratio of D to G bands gradually increased, due to increasing acetonitrile concentration. The third series, SEM observation showed that the addition of dimethylformamide (DMF) increased the nanotube diameter. XPS analysis demonstrated that the nitrogen content varied from 4.77 to 7.47 at.% in CNx obtained with different DMF concentrations. Raman spectra study showed that the intensity ratio of D to G bands gradually decreased, due to increasing DMF concentration. |
目次 Table of Contents |
目錄 誌謝 i 中文摘要 ii 英文摘要 iii 目錄 iv 圖目錄 vi 表目錄 xi 第一章 緒論 1 1-1 前言 1 1-2 奈米碳管的結構 2 1-2-1 單壁奈米碳管的結構 3 1-2-1 多壁奈米碳管的結構 4 1-3 製備奈米碳管的方法 5 1-3-1 電弧放電法 (arc discharge) 5 1-3-2 雷射剝除法 (laser ablation) 6 1-3-3 化學氣相沉積法 (chemical vapor deposition) 7 1-4 含氮奈米碳管的結構與特性 8 1-4-1 氮原子對奈米碳管的電性影響 8 1-4-2 含氮奈米碳管的熱穩定性 9 1-5 含氮奈米碳管的應用 11 1-5-1 儲氫材料 11 1-5-2 場發射性質 11 1-6 研究動機 13 第二章 文獻回顧 14 2-1 二茂鐵催化含氮奈米碳管的成長 (氮源-咪唑和乙腈) 14 2-2 二茂鐵催化含氮奈米碳管的成長 (氮源-咪唑) 20 第三章 實驗方法 22 3-1 實驗樣品 22 3-2 實驗步驟 23 3-3 實驗裝置 23 3-4 樣品分析 24 第四章 結果與討論 28 4-1 砒啶注射量對成長含氮奈米碳管的影響 29 4-1-1 掃描式電子顯微鏡下之形貌觀察 29 4-1-2 X射線光電子能譜儀分析 33 4-1-3 場發射穿透式電子顯微鏡之形貌觀察附加能量分散分析儀分析氮元素在奈米碳管的分佈影響 37 4-1-4 拉曼光譜分析 40 4-1-5 熱重損失分析 43 4-2 乙腈濃度對成長含氮奈米碳管的影響 46 4-2-1 掃描式電子顯微鏡下之形貌觀察 46 4-2-2 X射線光電子能譜儀分析 48 4-2-3 場發射穿透式電子顯微鏡之形貌觀察附加能量分散分析儀分析氮元素在奈米碳管的分佈影響 51 4-2-4 拉曼光譜分析 53 4-2-5 熱重損失分析 54 4-3 二甲基甲醯胺濃度對成長含氮奈米碳管的影響 56 4-3-1 掃描式電子顯微鏡下之形貌觀察 56 4-3-2 X射線光電子能譜儀分析 59 4-3-3 場發射穿透式電子顯微鏡之形貌觀察附加能量分散分析儀分析氮元素在奈米碳管的分佈影響 63 4-3-4 拉曼光譜分析 65 4-3-5 熱重損失分析 66 4-4 不同氮源對成長含氮奈米碳管的影響 68 4-4-1 掃描式電子顯微鏡下之形貌觀察 68 4-4-2 X射線光電子能譜儀分析 70 4-4-3 拉曼光譜分析 72 4-4-4 熱重損失分析 73 第五章 結論 76 參考文獻 77 |
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