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標題: 石墨烯/全氟磺酸聚合物/辣根過氧化酶酵素奈米複合薄膜作為生物感測器之探討
Biosensor based on graphene/nafion/horseradish peroxidase nanocomposite films
作者: Siao-Yuan Huang
關鍵字: no
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摘要: 本研究成功將石墨烯/全氟磺酸聚合物/辣根過氧化酶酵素奈米複合薄膜修飾於玻璃碳電極上製備出生物感測器;透過原子力顯微鏡來觀察石墨烯/全氟磺酸聚合物/辣根過氧化酶酵素奈米複合薄膜分散的情形,並利用循環伏安法和安培法來作偵測。 利用循環伏安法在0.1M的磷酸緩衝溶液(pH7)的掃描下來觀察石墨烯/全氟磺酸聚合物/辣根過氧化酶酵素奈米複合薄膜之電化學反應,並由不同掃描速率實驗證實此奈米複合薄膜為表面控制反應;再利用安培法來觀察石墨烯/全氟磺酸聚合物/辣根過氧化酶酵素奈米複合薄膜來偵測過氧化氫之濃度,能得到的靈敏度7.17x10-4(A/M-1cm2),偵測極限15.63mM,線性範圍為30-120mM。 從干擾物的實驗中可證實此生物感測器已成功的避免敗壞血酸,尿酸,葡萄糖的干擾,還有此奈米複合薄膜可用來對過氧化氫作專一性的偵測。
This study successfully graphene/nafion/horseradish peroxidase nanocomposite film modified on glassy carbon electrode to prepared biosensor. By atomic force microscopy to observe the graphene / nafion/ horseradish peroxidase nanocomposite films is dispersed situations to cyclic voltammetry and amperometric detection.By cyclic voltammetry in 0.1M phosphate buffer solution (pH 7) to scan can observe the graphene / nafion/ horseradish peroxidase nanocomposite films of electrochemical reaction and in this experiments by different scan rates that confirmed this nanocomposite films is surface-controlled reactions.Reused amperometric observe the graphene / nafion/ horseradish peroxidase nanocomposite films nanocomposite films to detect the concentration of hydrogen peroxide, can get a sensitivity of 7.17x10-4(A/M-1cm2), detection limit of 15.63mM, the linear range of 30-120mM. From the experiments confirm this biosensor have been successfully to avoid interference of ascorbic acid 、 uric acid 、 glucose,and this nanocomposite films can be used to make specifically detection of hydrogen peroxide.
其他識別: U0005-1104201514420300
文章公開時間: 2018-05-11
Appears in Collections:化學工程學系所



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