臺灣博碩士論文加值系統

本研究使用一鍋合成法在沒有表面活性劑之條件下成功製備出鐵鉑奈米粒子–還原氧化石墨烯奈米複合材料。採用低毒性之乙二醇作為溶劑與還原劑、氧化石墨奈米薄片作為鐵鉑奈米粒子之成長環境。鐵鉑–還原氧化石墨烯奈米複合材料之微結構、組成、表面形貌和磁學性質等特性透過X光粉末繞射儀、傅立葉轉換紅外線光譜儀、拉曼光譜儀、掃描式電子顯微鏡、穿透式電子顯微鏡、振動試樣磁力計、高週波加熱器與恆電位儀進行檢測。綜合上述分析結果，以X光繞射儀觀察到還原氧化石墨烯與鐵鉑之繞射峰。透過拉曼光譜儀可以看到還原氧化石墨烯之主要特徵G band與D band在1591 cm-1與1356 cm-1左右出現。傅立葉轉換紅外線光譜儀可知其擁有烷基（C-O）、醇（C-H）和亞甲基（-CH2-）等官能基。鐵鉑–還原氧化石墨烯材料擁有飽和磁化量10.81 emu/g。並發現添加不同還原氧化石墨烯前驅物時，其飽和磁化量隨氧化石墨增加而明顯降低。從上述的分析結果可以看到鐵鉑與還原氧化石墨烯間緊密的相互作用有利於電子傳輸，從而有望實現雙電層電容器之高效能電催化劑。此外，鐵鉑–石墨烯奈米複合材料展現了多功能在親水性、鐵磁性與增強之電催化活性。

In this study, FePt nanoparticles (NPs)/reduced graphene oxide (rGO) nanocomposites have been synthesized using a one-pot strategy without any surfactants. Ethylene glycol (EG) functions as both solvent and reductant, whereas graphene oxide (GO) nanosheets provide anchoring sites for the nucleation growth of FePt NPs. The microstructure, composition, surface morphology and magnetic property of the FePt/rGO nanocomposites are methodically characterized by XRD, FT-IR, Raman spectrum, SEM, TEM, VSM and potentiostat. From the above analysis results, it can be observed that the diffraction peak of rGO and FePt in the XRD pattern, and the main features G and D band of rGO that appeared at around 1591 cm-1and 1356 cm-1 were observed in the Raman spectrum. From the FT-IR spectrum, C-O (alcohol), C-H (alkane) and -CH2- (methylene) were observed respectively. The saturation magnetization (Ms) of rGO/FePt nanocomposites was 10.81 emu/g. The results show that high concentration of GO as rGO precursor, could significantly reduce the saturation magnetization of as-prepared nanocomposites. The tight interaction can be observed between the FePt and rGO, which is beneficial for the electron transport, thus making it a promising candidate as an efficient electrocatalyst in electrical double-layer capacitors (EDLC), besides, the FePt/GO nanocomposites exhibit multifunctions such as hydrophilicity, ferromagnetism and enhanced electrocatalytic activity.

中文摘要 i
英文摘要 ii
誌謝 iii
目錄 iv
第一章 緒論 1
1.1 前言 1
1.2 研究動機 2
1.3 研究目的與範圍 3
第二章 文獻回顧與理論 4
2.1 奈米材料 4
2.2 奈米粒子的基本特性 4
2.3.1 表面效應 4
2.3.2 量子尺寸效應 5
2.3.3 小尺寸效應 6
2.3.4 量子穿隧效應 7
2.3.5 庫倫堵塞效應 9
2.3.6 奈米粒子的製備 9
2.3 鐵鉑奈米粒子之特性 11
2.4 鐵鉑奈米粒子之製備 12
2.5 石墨烯 15
2.6 氧化石墨奈米薄片製備 16
2.7 鐵鉑–還原氧化石墨烯奈米複合材料製備 17
2.8 鐵鉑–還原氧化石墨烯奈米複合材料之應用 19
第三章 實驗方法及步驟 20
3.1 製備氧化石墨 21
3.1.1 實驗藥品 22
3.1.2 實驗設置 22
3.1.3 實驗步驟 23
3.2 製備鐵鉑–還原氧化石墨烯奈米複合材料 24
3.2.1 實驗藥品 25
3.2.2 實驗設置 25
3.2.3 實驗步驟 26
3.2.4 熱退火處理 27
3.3 儀器介紹 27
3.3.1. X光繞射儀 27
3.3.2. 場發射掃描式電子顯微鏡 28
3.3.3. 穿透式電子顯微鏡 30
3.3.4. 傅立葉轉換紅外線光譜儀 31
3.3.5. 振動試樣磁力計 32
3.3.6. 拉曼光譜儀 33
3.3.7. 高週波加熱器 34
3.3.8. 恆電位儀 35
第四章 實驗結果與討論 37
4.1. 氧化石墨奈米薄片 37
4.1.1 氧化石墨奈米薄片之晶體結構分析` 37
4.1.2 氧化石墨烯奈米薄片之表面性質分析 39
4.1.3 氧化石墨烯奈米薄片之形貌分析 40
4.2. 鐵鉑–還原氧化石墨烯之熱退火效應 43
4.3.1 鐵鉑–還原氧化石墨烯真空熱退火之晶體結構 43
4.3.2 鐵鉑–還原氧化石墨烯真空熱退火之表面形貌 48
4.3.3 鐵鉑–還原氧化石墨烯真空熱退火之表面性質 50
4.3.4 鐵鉑–還原氧化石墨烯真空熱退火之磁學性質 51
4.3. 鐵鉑–還原氧化石墨烯的實驗結果與討論 55
4.2.1 鐵鉑–還原氧化石墨烯之晶體結構分析 56
4.2.2 鐵鉑–還原氧化石墨烯之表面性質分析 60
4.2.3 鐵鉑–還原氧化石墨烯之形貌分析 62
4.2.4 鐵鉑–還原氧化石墨烯之磁學分析 68
4.2.5 鐵鉑–還原氧化石墨烯之磁熱療檢測 73
4.2.6 鐵鉑–還原氧化石墨烯之電化學性質 75
第五章 結論 86
參考文獻. 87

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