Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/3776
標題: 束狀型多壁奈米碳管於電化學生物感測器之應用
Application of multi-wall carbon nanotube bundles for electrochemical biosensor
作者: 葉建村
Ye, Jian-Tsuen
關鍵字: biosensor;生物感測器;bundle-type nanotubes;Nafion;束狀型奈米碳管;聚全氟磺酸離子交換樹脂
出版社: 化學工程學系所
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摘要: 
本研究以化學氣相沉積法經由三成份奈米介金觸媒合金觸媒(Ni/Mg/Mo)成長出束狀型(bundle)奈米碳管,以鹽酸純化後,再利用硝酸及過氧化氫與碳管進行氧化反應,改質奈米碳管之表面改構。將改質之奈米碳管與聚全氟磺酸離子交換樹脂(Nafion)掺混均勻後,修飾於玻璃碳電極表面上,將製備好的電極進行偵測亞鐵氫化鉀、過氧化氫與葡萄糖等試驗,以探討束狀型奈米碳管應用於電化學式生物感測器之效能。
研究中顯示,束狀奈米碳管能夠偵測到更大的電流訊號,提升了感測器之靈敏度,將束狀奈米碳管改質後,其偵測效能更佳。偵測過氧化氫的靈敏度為2.4μA/mM、線性範圍0.025-5.8mM、偵測極限369μM及應答時間小於10s。偵測葡萄糖的GOD最適值為2mg/mL,其靈敏度578nA/mM、線性範圍0.025-1.8mM、偵測極限88μM及應答時間小於10s。

In this investigation, we use chemical vapor deposition (CVD) and the nano intermetallic alloys catalyst (Ni-Mg-Mo) to synthesis bundle-type carbon nanotubes . After purification by HCl, the modified modify carbon nanotubes can be prepare by the oxidation with HNO3 and H2O2.
The modified carbon nanotubes are mixed with Nafion and modified on the surface of glassy carbon electrode(GCE). The prepared electrodes detect K3[Fe(CN)6], H2O2 and glucose.The efficiency of the bundle-type carbon nanotubes applied on electrochemical biosensor was also investigated.
The result of this study, the bundle-type nanotubes can detect a larger current range, and enhance the sensitivity of the sensor. The modified carbon nanotubes can have better efficiency of detection.
The sensitivity of detecting H2O2 is 2.4μA/mM, and the linear range is 0.025-5.8mM. The limiting of detection (LOD) is 369μM and the respose time less than 10s.
The optimal condition of detecting GOD of glucose is 2mg/mL. The result of sensitivity is 578nA/mM, and the linear range is 0.025-1.8mM. The LOD is 88μM and the respose time less than 10s.
URI: http://hdl.handle.net/11455/3776
其他識別: U0005-2705200915030000
Appears in Collections:化學工程學系所

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