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石墨烯/硒化鎘/奈米碳管/幾丁聚醣複合薄膜的電化學性質及用於電化學感測之...

國立高雄大學化學工程及材料工程學系碩士班

石墨烯/硒化鎘/奈米碳管/幾丁聚醣複合薄膜的電化學性質及用於電化學感測之研究 = Electrochemical Properties of Graphene/CdSe/Carbon nanotube/Chitosan Composite Films Used for Selective Detections of Dopamine, Uric Acid, and Ascorbic Acid

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	Electrochemical Properties of Graphene/CdSe/Carbon nanotube/Chitosan Composite Films Used for Selective Detections of Dopamine, Uric Acid, and Ascorbic Acid
作者:	江惠芳,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	2013[民102]
面頁冊數:	168面圖，表格 : 30公分;
標題:	幾丁聚醣
標題:	chitosan
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/02916329429946028355
附註:	參考書目：面143-153
附註:	102年10月31日公開
其他題名:	石墨烯硒化鎘奈米碳管幾丁聚醣複合薄膜的電化學性質及用於電化學感測之研究
摘要註:	本研究以幾丁聚醣(chitosan, CS)、奈米碳管(carbon nanotube, CNT)、氧化石墨烯(graphene oxide, GO)、化學還原之氧化石墨烯(reduced graphene oxide, rGOc)及硫醇包覆的硒化鎘(thiol-capped CdSe)製備化學修飾玻璃碳電極(glassy carbon electrode, GCE)，並以循環伏安法(cyclic voltammetry, CV)探討對多巴胺、尿酸與抗壞血酸的電催化特性。將CdSe/rGOc/CS、rGOc/CS及裸電極互相比較，發現添加CdSe後能增加薄膜的孔隙度，且薄膜中帶電的官能基團能與多巴胺、尿酸與抗壞血酸間有靜電及氫鍵作用，因此能提升對三成份的電催化效果。而CNT/rGOc/CS、CNT/GO/CS修飾電極也具備良好的電催化性質可以同時偵測多巴胺、尿酸與抗壞血酸。利用磺酸化反應使幾丁聚醣的性質改變，成為磺酸化幾丁聚醣(sulfonated chitosan, sCS)，並與GO和CNT製備成CNT/GO/sCS修飾電極，添加sCS後的修飾電極在電化學感測過程中修飾薄膜會有膨潤的效果，使薄膜表面產生更多奈米級孔隙，因此使三成份的偵測訊號更強並且能同時偵測三成份。將CNT/GO/CS與CNT/GO/sCS修飾電極對多巴胺、尿酸與抗壞血酸做定量分析，其中CNT/GO/CS在偵測多巴胺、尿酸與抗壞血酸線性範圍濃度分別為1.25~280 μM、1.25~213 μM、1.25~442μM，最低偵測極限均為0.06 μM，靈敏度分別為1.25、0.91、0.64 μA cm-2 μM-1。而CNT/GO/sCS在偵測多巴胺、尿酸與抗壞血酸線性範圍濃度分別為1.25~357 μM、1.25~533 μM、1.25~442μM，靈敏度分別為1.68、0.96、0.72 μA cm-2 μM-1，最低偵測極限分別為0.06、0.05、0.06 μM (S/N=3)。 In this study, thiol-capped CdSe, graphene oxide (GO), chemically reduced graphene oxide (rGOc), and carbon nanotube (CNT) were dispersed in chitosan (CS) aqueous solution followed by casting films on glassy carbon electrodes to investigate the electrocatalytic activities of the films by cyclic voltammetry for developments of electrochemical sensors for dopamine (DA), uric acid (UA), and ascorbic acid (AA). CV curves revealed that CdSe/rGOc/CS exhibited high electrocatalytic activity and selective detection ability for DA, UA, and AA compared with bare GCE and rGOc/CS. The CdSe/rGOc/CS composite film had enhanced porosity after adding CdSe to rGOc/CS and exhibited specific interactions with DA, UA, or AA. The composite films of CNT/rGOc/CS and CNT/GO/CS exhibited also high electrocatalytic activities. The sulfonated chitosan (sCS) in the CNT/GO/sCS had enhanced the electrocatalytic activities much higher toward the oxidation of DA, UA and AA. This could be attributed to the swelling of sCS in aqueous solutions leading to enhanced porosity in the CNT/GO/sCS film. The CNT/GO/sCS- and CNT/GO/CS-modified electrodes were used for simultaneous and quantitative determinations of DA, UA, and AA. For the CNT/GO/CS, the linear ranges for detections of DA, UA, and AA were 1.25

石墨烯/硒化鎘/奈米碳管/幾丁聚醣複合薄膜的電化學性質及用於電化學感測之研究 = Electrochemical Properties of Graphene/CdSe/Carbon nanotube/Chitosan Composite Films Used for Selective Detections of Dopamine, Uric Acid, and Ascorbic Acid
江, 惠芳

石墨烯/硒化鎘/奈米碳管/幾丁聚醣複合薄膜的電化學性質及用於電化學感測之研究 = Electrochemical Properties of Graphene/CdSe/Carbon nanotube/Chitosan Composite Films Used for Selective Detections of Dopamine, Uric Acid, and Ascorbic Acid / 江惠芳撰 - [高雄市] : 撰者, 2013[民102]. - 168面 ; 圖，表格 ; 30公分.
參考書目：面143-153102年10月31日公開.
幾丁聚醣chitosan

石墨烯/硒化鎘/奈米碳管/幾丁聚醣複合薄膜的電化學性質及用於電化學感測之研究 = Electrochemical Properties of Graphene/CdSe/Carbon nanotube/Chitosan Composite Films Used for Selective Detections of Dopamine, Uric Acid, and Ascorbic Acid
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330 $a 本研究以幾丁聚醣(chitosan, CS)、奈米碳管(carbon nanotube, CNT)、氧化石墨烯(graphene oxide, GO)、化學還原之氧化石墨烯(reduced graphene oxide, rGOc)及硫醇包覆的硒化鎘(thiol-capped CdSe)製備化學修飾玻璃碳電極(glassy carbon electrode, GCE)，並以循環伏安法(cyclic voltammetry, CV)探討對多巴胺、尿酸與抗壞血酸的電催化特性。將CdSe/rGOc/CS、rGOc/CS及裸電極互相比較，發現添加CdSe後能增加薄膜的孔隙度，且薄膜中帶電的官能基團能與多巴胺、尿酸與抗壞血酸間有靜電及氫鍵作用，因此能提升對三成份的電催化效果。而CNT/rGOc/CS、CNT/GO/CS修飾電極也具備良好的電催化性質可以同時偵測多巴胺、尿酸與抗壞血酸。利用磺酸化反應使幾丁聚醣的性質改變，成為磺酸化幾丁聚醣(sulfonated chitosan, sCS)，並與GO和CNT製備成CNT/GO/sCS修飾電極，添加sCS後的修飾電極在電化學感測過程中修飾薄膜會有膨潤的效果，使薄膜表面產生更多奈米級孔隙，因此使三成份的偵測訊號更強並且能同時偵測三成份。將CNT/GO/CS與CNT/GO/sCS修飾電極對多巴胺、尿酸與抗壞血酸做定量分析，其中CNT/GO/CS在偵測多巴胺、尿酸與抗壞血酸線性範圍濃度分別為1.25~280 μM、1.25~213 μM、1.25~442μM，最低偵測極限均為0.06 μM，靈敏度分別為1.25、0.91、0.64 μA cm-2 μM-1。而CNT/GO/sCS在偵測多巴胺、尿酸與抗壞血酸線性範圍濃度分別為1.25~357 μM、1.25~533 μM、1.25~442μM，靈敏度分別為1.68、0.96、0.72 μA cm-2 μM-1，最低偵測極限分別為0.06、0.05、0.06 μM (S/N=3)。 In this study, thiol-capped CdSe, graphene oxide (GO), chemically reduced graphene oxide (rGOc), and carbon nanotube (CNT) were dispersed in chitosan (CS) aqueous solution followed by casting films on glassy carbon electrodes to investigate the electrocatalytic activities of the films by cyclic voltammetry for developments of electrochemical sensors for dopamine (DA), uric acid (UA), and ascorbic acid (AA). CV curves revealed that CdSe/rGOc/CS exhibited high electrocatalytic activity and selective detection ability for DA, UA, and AA compared with bare GCE and rGOc/CS. The CdSe/rGOc/CS composite film had enhanced porosity after adding CdSe to rGOc/CS and exhibited specific interactions with DA, UA, or AA. The composite films of CNT/rGOc/CS and CNT/GO/CS exhibited also high electrocatalytic activities. The sulfonated chitosan (sCS) in the CNT/GO/sCS had enhanced the electrocatalytic activities much higher toward the oxidation of DA, UA and AA. This could be attributed to the swelling of sCS in aqueous solutions leading to enhanced porosity in the CNT/GO/sCS film. The CNT/GO/sCS- and CNT/GO/CS-modified electrodes were used for simultaneous and quantitative determinations of DA, UA, and AA. For the CNT/GO/CS, the linear ranges for detections of DA, UA, and AA were 1.25
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