請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/90581
標題: The Application of Nanostructured AuCu3 Alloy Electrode in Electroanalytical Chemistry
金銅合金奈米孔洞電極於電分析化學上的應用
作者: 吳俊宏
Chun-Hung Wu
關鍵字: barrel plating gold electrode
AuCu3 alloy electrode
formaldehyde
catechol
滾筒電鍍金電極
金銅合金電極
甲醛
鄰苯二酚
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摘要: The nanostructured AuCu3 alloy electrode can be easily fabricated by annealing a barrel plated gold electrode (AuBPE) consisting of Cu main body with plating of a thin layer of Ni and Au. In the first part, we study about the physical property of AuCu3 alloy electrode with XRD and SEM. To prove about the mechanism of NiO removing, we do the experiment with the complexing agents, dimethylglyoxime. At last, we use the cyclic voltammetry to compare the difference between AuCu3 electrode and AuBPE. In the second part, ultilizing the AuCu3 electrode to detect formaldehyde with flow injection analysis. Under FIA optimized conditions, a good linearity in the window of 1 μM to 4 mM and a regression coefficient of 0.998 was obtained. The detection limit was calculated as 0.57 μM (S/N=3). The reproducibility of proposed system was further checked by 10 continuous injection of 1 μM, 100 μM, and 4 mM formaldehyde with small relative standard deviation of 3.85 %, 3.13 %, and 0.53 % respectively. The proposed system is tolerable to other co-existing interferants such as amino acids and common cations and anions for the detection of formaldehyde. Successful application of the system in real sample analysis. In the third part, we use AuCu3 electrode to detect catechol with differential pulse voltammetry. A good linearity in the window of 10 μM to 500 μM and a regression coefficient of 0.999 was obtained. The detection limit was calculated as 2.35 μM (S/N=3). At last, we obtain a good recovery of underwater and tap sample analysis.
本論文使用之電極以滾筒電鍍金電極作為前驅物,製備出具有奈米孔洞結構之金銅合金電極,其製備流程相當簡易,因此具有量產之可能性。在第一部分中,針對所製備出的金銅合金電極進行物性上的探討,就其表面結構、電化學行為進行研究,透過X-光繞射光譜儀來證實金銅合金的形成,利用簡單的錯化物螯合實驗檢視氧化鎳剝除行為。第二部分中,利用製備出的金銅合金電極進行甲醛的偵測,並對金銅合金氧化甲醛之機構進行探討,並搭配流動注入分析法於中性環境(pH=7)下偵測甲醛,更進一步將金銅合金系統與分離管柱串連進行真實樣品之分析。第三部分中,針對鄰苯二酚進行分析,為提高分析之靈敏度因此搭配微分脈衝伏安法來進行研究,並針對自來水及地下水樣品進行回收率的探討,最後針對其同分異構物進行電化學行為上之分析。
URI: http://hdl.handle.net/11455/90581
文章公開時間: 2018-07-08
顯示於類別:化學系所

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