臺灣博碩士論文加值系統

本實驗利用碳水化合聚合物分散石墨與石墨烯複合材料以製備電化學感測器以及生物感測器，首先以石墨烯纖維素微纖維固定漆酶複合材料修飾網版印刷電極製備生物感測器偵測兒茶酚(CC)，研究漆酶的直接電化學行為。此生物感測器的電流響應在CC濃度0.2至209.7 μM的範圍內呈線性、靈敏度為0.932 μM μA-1cm-2、偵測極限為0.085 μM。而單純以纖維素微纖維剝離石墨複合材料修飾網版印刷電極製備簡單可靠的多巴胺感測器。得到的線性響應範圍為0.06〜134.5 μM、10 nM的偵測極限。

另外也以甲殼素水凝膠固定石墨的複合材料修飾玻璃碳電極製備硝基苯(NB)感測器。石墨-甲殼素(GR-CHI)複合材料修飾電極以循環伏安法研究NB的電化學還原行為。在0.1~594.6 μM的線性響應範圍内偵測NB，而偵測極限為37 nM。

The experiments are preparation of carbohydrate polymers dipersed graphite and graphene composites for electrochemical sensors and biosensor. First, fabrication of biosensor to detect the catechol(CC) using laccase immobilized on graphene-cellulose microfibers composite modified screen printed carbon electrode. It was linear over the concertation of CC ranging from 0.2 to 209.7 µM. The sensitivity and the detection limit of the biosensor is 0.932 µMµA-1 cm-2 and 0.085 µM, respectively. And a simple and robust dopamine sensor was developed using cellulose microfibers exfoliated graphite composite modified screen-printed carbon electrode. And the obtained response was linear in the ranging from 0.06 to 134.5 µM. Detection limit is 10 nM.

On the other hand, a nitrobenzene(NB) sensor has been developed based on a glassy carbon electrode modified with the composite of chitin hydrogel stabilized graphite. Graphite-Chitin(GR-CHI) composite modified electrode is used to study the electrochemical reduction behavior of NB by cyclic voltammetry. It was found that GR-CHI composite modified electrode can detect the NB in the linear response range from 0.1 to 594.6 µM with the lower detection limit of 37 nM.

目 錄

摘　要 i
ABSTRACT ii
誌 謝 iii
目 錄 iv
表目錄 vii
圖目錄 viii
第一章 緒論 1
1.1 電化學感測器 1
1.2 生物感測器 4
1.3 修飾電極 5
1.4 藥品簡介 8
1.4.1 漆氧化酶(laccase) 8
1.4.2 石墨烯（graphene） 10
1.4.3 纖維素（cellulose） 11
1.4.4 兒茶酚（catechol, C6H4(OH)2） 12
1.4.5 石墨（graphite） 13
1.4.6 甲殼素(chitin, (C8H13O5N)n) 14
1.4.7 硝基苯（nitrobenzene, C6H5NO2） 15
1.4.8多巴胺（Dopamine, C8H11NO2） 16
第二章 實驗藥品、器材與分析方法 17
2.1 實驗藥品 17
2.2 實驗器材 18
2.2.1 毯製墊襯 18
2.2.2 網版印刷電極 (SPCE) 18
2.2.3 玻璃碳電極（GCE） 18
2.3 電化學分析法 19
2.3.1 循環伏安法（CV） 19
2.3.2微分脈衝伏安法（DPV） 21
2.3.3 安培法（IT） 22
2.4 光譜分析法 23
2.4.1掃描式電子顯微鏡(SEM) 23
2.4.2 傅立葉轉換紅外線光譜(FTIR) 24
2.4.3 能量分散X光光譜(EDX) 25
2.4.4 拉曼光譜(Raman) 26
第三章 以石墨烯-纖維素微纖維固定漆酶複合材料修飾網版印刷電極偵測兒茶酚 28
3.1 前言 28
3.2 CC生物感測器之製備 30
3.3 結果與討論 30
3.3.1 材料特徵 30
3.3.2 漆酶在不同修飾SPCE上的直接電化學 33
3.3.3 CC的電催化氧化 37
3.3.4 CC之安培測定 39
3.3.5 感測器偵測CC之選擇性 41
3.4 結論 44
第四章 以甲殼素水凝膠包覆石墨的複合材料修飾電極製備簡單又靈敏的硝基苯電化學感測器 45
4.1 前言 45
4.2 石墨-CHI複合材料與修飾電極的製備 46
4.3 結果與討論 47
4.3.1 材料特徵 47
4.3.2 NB在不同修飾電極上的電化學 48
4.3.3 NB之安培測定 50
4.4 結論 53
第五章 以纖維素微纖維剝離石墨複合材料製備簡單可靠的感測器偵測生物樣品中的多巴胺 54
5.1 前言 54
5.2 石墨-CMF複合材料與修飾電極的製備 55
5.3 結果與討論 55
5.3.1 材料特徵 55
5.3.2 DA在不同修飾電極上的電化學 57
5.3.3 DA之測定 60
5.4 結論 63
參考文獻 64

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