臺灣博碩士論文加值系統

本研究利用水熱法合成二硫化鉬奈米材料，並透過添加介面活性劑聚乙烯吡咯烷酮(PVP)和調整水熱法製程溫度與pH值等參數，進而對二硫化鉬結構大小和表面形貌產生改變。藉此提高比表面積以增加更多活性位點，改善多巴胺感測之表現。利用滴塗法將二硫化鉬奈米材料在ITO玻璃基板上形成薄膜，並透過幾丁聚醣改良薄膜的穩定性，提升薄膜重複量測之可能性，以製備出多巴胺電化學感測電極。最後透過電性分析與物性分析SEM、XRD、EDS找出具有最佳感測能力之二硫化鉬奈米結構，進而提升多巴胺感測電極之性能。
根據實驗結果，幾丁聚醣能讓薄膜穩定並可以使電極重複量測，最佳的幾丁聚醣量為0.4 mg/ml且不會影響電性。在製作二硫化鉬材料方面，添加0.3 g介面活性劑PVP並固定pH值為5與溫度為180 ℃的水熱法參數具有最佳感測能力和電性表現。由於其形貌表面有大量的奈米花球進而提升感測性能。氧化電流與靈敏度分別為4.891 mA、123.87 µA/mMcm2，決定係數（R2）為0.99016。並且在掃描速率分析及重現性都有良好的表現。研究證明此材料對多巴胺具有良好的感測能力。

This thesis synthesizes molybdenum disulfide (MoS2) nanomaterials using a hydrothermal method. By adding the surfactant polyvinylpyrrolidone (PVP) and adjusting hydrothermal process parameters such as temperature and pH value, the size and surface morphology of the MoS2 structures were altered. This increased the specific surface area to provide more active sites, thereby improving dopamine sensing performance. The MoS2 nanomaterials were deposited onto ITO glass substrates using a drop-coating method, and chitosan was used to enhance the stability of the film, improving its repeatability for measurements, to fabricate a dopamine electrochemical sensing electrode. Finally, electrical and physical analyses, including SEM, XRD, and EDS, were used to identify the MoS2 nanostructure with the best sensing capabilities, thereby enhancing the performance of the dopamine sensing electrode.
According to the experimental results, chitosan can stabilize the film and enable the electrode to be used for repeated measurements. The optimal chitosan concentration is 0.4 mg/ml, which does not affect the electrical properties. In the fabrication of MoS2, the best sensing capability and electrical performance were achieved with the hydrothermal method parameters of 0.3 g of the surfactant PVP, a fixed pH of 5, and a temperature of 180 °C. The presence of a large number of nanoflowers on the surface morphology enhances the sensing performance. The oxidation current and sensitivity were 4.891 mA and 123.87 µA/mMcm², respectively, with a determination coefficient (R²) of 0.99016. Additionally, the material showed good performance in scan rate analysis and reproducibility. The study demonstrates that this material exhibits excellent sensing performance towards dopamine.

論文審定書i
誌謝ii
摘要iii
Abstract iv
目錄v
圖目錄ix
表目錄xiv
第一章 緒論1
1-1前言1
1-2電化學感測器介紹1
1-3多巴胺介紹2
1-4材料介紹2
1-4-1 二硫化鉬（MoS2）2
1-4-2 幾丁聚醣（Citosan）4
1-5 論文架構4
第二章 理論分析5
2-1 奈米材料生長方法5
2-1-1 水熱合成法（Hydrothermal）6
2-1-2 超聲波法（Photoelectrochemical）7
2-2 奈米材料與感測材料成長機制7
2-2-1 奈米材料成長機制8
2-2-2 感測材料MoS2成長機制8
2-3 界面活性劑之影響9
2-4 感測器製備方式10
2-4-1滴塗法10
2-5 電化學量測原理11
2-6 電化學感測分析方法11
2-6-1 時變安培法12
2-6-2 循環伏安法12
2-7 電化學三電極系統14
2-7-1 輔助電極14
2-7-2 工作電極14
2-7-3 參考電極14
2-8 材料物性分析15
2-8-1 X光繞射儀（XRD）15
2-8-2 場發射掃描式電子顯微鏡（FE-SEM）16
2-8-3 能量色散X射線光譜（EDS）16
2-9多巴胺感測機制17
第三章 實驗與儀器介紹18
3-1 實驗藥品18
3-2 物性分析儀器20
3-2-1 場發射掃描式電子顯微鏡（FE-SEM）20
3-2-2 X光繞射儀（X-Ray Diffraction）21
3-2-3 能量色散X射線光譜儀（EDS）21
3-3 製程設備介紹21
3-3-1高溫爐、高壓釜及鐵氟龍杯22
3-3-2加熱磁力攪拌平台22
3-3-3 pH酸鹼度測試計22
3-3-4微量吸管移液器22
3-4 清洗設備介紹23
3-4-1超聲波震盪機23
3-4-2離心機23
3-5 電性分析儀器23
3-5-1 電化學工作站23
3-6 製程步驟24
3-6-1 玻璃基板清洗流程24
3-6-2 二硫化鉬水熱製備25
3-6-3 二硫化鉬感測電極製備26
第四章 結果與討論27
4-1 ITO玻璃基板對多巴胺感測電性分析27
4-2 滴塗前驅溶液對多巴胺感測影響28
4-2-1不同溶劑之影響28
4-2-2 添加幾丁聚醣之影響28
4-3二硫化鉬感測電極29
4-3-1二硫化鉬生長參數29
4-3-2 0.0g界面活性劑製備之二硫化鉬分析30
4-3-3 0.1g界面活性劑製備之二硫化鉬分析30
4-3-4 0.2g界面活性劑製備之二硫化鉬分析31
4-3-5 0.3g界面活性劑製備之二硫化鉬分析32
4-3-6 0.5g界面活性劑製備之二硫化鉬分析33
4-3-7 不同pH值製備之二硫化鉬分析34
4-4 綜合討論35
4-4-1水熱參數對形貌影響討論35
4-4-2水熱參數對電性影響討論36
4-5 對多巴胺靈敏度分析37
4-6 二硫化鉬物性分析38
4-7 電化學掃描速率分析38
4-8 干擾物分析39
4-9檢測極限40
4-10研究結果比較40
第五章 結論與未來展望42
5-1 實驗結論42
5-2 未來展望43
參考文獻44
附表52
附圖54

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