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研究生： 高麗婷
Gao, Li-Ting
論文名稱： 表面修飾不同形貌奈米銀應用於表面電漿共振有機氣體感測器之研究
A Study on VOC Sensor Utilizing Localized Surface Plasmon Resonance of Silver Nanoparticles with Different Morphologies and Surface Modification
指導教授： 呂家榮
Lu, Chia-Jung
學位類別： 碩士
Master
系所名稱： 化學系
Department of Chemistry
論文出版年： 2019
畢業學年度： 107
語文別： 中文
論文頁數： 107
中文關鍵詞： 奈米銀 、石墨烯 、揮發性有機化合物 、局部表面電漿共振 、微小化感測器
英文關鍵詞： silver naonparticles, Graphene oxide, Volatile Organic Compounds, Localized Surface Plasmon Resonance, Microstructure sensor
DOI URL： http://doi.org/10.6345/NTNU201900173
論文種類： 學術論文
相關次數： 點閱：101  下載：9 
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    • 本實驗目的在觀察不同形貌之奈米銀粒子在感測揮發性有機氣體 VOC 時，對光學造成的影響。實驗上合成球型 ( Sphere )、三角板( Triangular silver nanoplates, TSNP ) 、立方體 ( Cubic ) 三種形狀之奈米銀，分別自組裝在玻璃感測器上，製作成微小化裝置，主要的吸收波峰位置從球型約 390 nm 位移至三角板 600 nm，立方體主要的波峰在 550 nm，並利用實驗室發展的氣體生成系統，比較三者間在光學上對校正曲線斜率的響應，根據電場分布的特性，證實了具有尖端結構的粒子擁有最好的感測能力。
    另外，將奈米銀自組裝感測器各別修飾上聚二甲基矽氧烷以及石墨烯 ( Graphene oxide, GO ) 薄膜，這時候奈米銀在相同的空間裡可感測到更多的氣體分子，因此能增強奈米銀局部表面電漿共振，提升感測器的靈敏度。然而，相較於聚合物，發現石墨烯更能有效提升奈米銀的靈敏度，這項研究為以奈米結構為基底的光學感測器提升了一個層次，butanol 感測可上升 3.28 倍，m-xylene 感測可上升 2.78 倍。

    The purpose of this study was to observe the optical effects of silver nanoparticles in different morphologies when sensing volatile organic gas VOCs. Experimentally, three types of silver nanoparticles which are Sphere, Triangular silver nanoplates ( TSNP ) and cubic, were self-assembled on the glass, respectively, and they were made into microstructures gas sensor. TSNP LSPR peak changed from 390nm that in sphere to 600nm. And cubic is 550nm. Combined with the gas generation system developed by the laboratory, the response of the three curves to the slope of the calibration curves were compared. According to the characteristics of the electric field distribution, it was confirmed that the particles with the tip structure have the highest sensing capability.
    In addition, as the sensor with silver nanoparticles self-assembly was modified with poly ( dimethylsiloxane ) and graphene oxide ( GO ) film. Therefore, silver nanoparticles can sense more gas molecules, so it can enhance the local surface plasma resonance ( LSPR ), and improve the sensitivity of the sensor.
    However, compared with polymers, we found that graphene oxide is better in enhancing the sensitivity of nano silver. This study has raised the level of optical sensors based on nanostructures. The sensing of butanol can be increased 3.28 times, m-xylene increased 2.78 times.

    摘 要 I ABSTRACT II 目 錄 III 圖目錄 VII 表目錄 XII 第一章 緒論 1 1.1 研究背景與動機 1 1.2 銀奈米粒子合成 2 1.2.1 晶種成長法 3 1.2.2 多元醇法 5 1.2.3 水熱法 6 1.2.4 光合成法 8 1.3 奈米材料特性 11 1.3.1 小尺寸效應 11 1.3.2 量子尺寸效應 12 1.3.3 表面效應 13 1.3.4 Mie theory 14 1.3.5 漸逝波理論 16 1.4局部表面電漿共振 20 1.5 靜電導體特性 22 1.5.1尖端放電 22 1.5.2 石墨稀應用 25 第二章 實驗部分 27 2.1 藥品、實驗器材與儀器設備 27 2.1.1 實驗藥品 27 2.1.2 實驗器材 29 2.1.3 儀器設備 30 2.2 奈米粒子之合成 34 2.2.1 球型奈米銀合成 34 2.2.2 三角型奈米銀合成 36 2.2.3 方型奈米銀合成 38 2.2.4棒狀奈米銀合成 40 2.3奈米銀自組裝流程及表面修飾 43 2.3.1 玻璃基板的製備 43 2.3.2 玻璃修飾APTMS 43 2.3.3 玻璃修飾銀奈米粒子 43 2.3.4 奈米銀表面修飾DB-1薄膜 44 2.3.5 奈米銀表面修飾AGO薄膜 45 2.3.6 奈米銀表面修飾CTAB薄膜 45 2.4 感測系統 47 2.4.1 奈米薄膜感測系統之架設 47 2.4.2 光譜儀數據計算 50 2.4.3絕對差值總和法 51 第三章 結果與討論 55 3.1 奈米銀粒子之分析 55 3.1.1 球狀奈米銀 55 3.1.2 三角板奈米銀 59 3.1.3 方型奈米銀 66 3.1.4 棒狀奈米銀 69 3.2 不同奈米銀粒子修飾玻璃基板 71 3.2.1奈米銀自組裝於玻璃表面 71 3.2.2三角板奈米銀自組裝於玻璃表面 72 3.2.3立方奈米銀自組裝於玻璃表面 73 3.3 不同形狀奈米銀粒子感測器分析 74 3.3.1自組裝奈米銀感測器再現性測試 74 3.3.2自組裝奈米銀感測器對m-xylene訊號 75 3.3.3奈米銀感測器選擇性與靈敏度比較 81 3.4 複合材料影響 87 3.4.1聚二甲基矽氧烷DB-1 87 3.4.2石墨稀 90 3.5 界面活性劑對感測的影響 95 3.6 CTAB對三角板奈米銀粒子的影響 96 3.7 電漿清洗對三角板奈米銀粒子的影響 97 第四章 結論 99 參考文獻 100

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