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標題Title: A Study of the Carbon Paste Electrode Modified with Ferrocene and Its Applications to Detection of Hydrogen Peroxide and Glucose
作者Authors: 連崇閔,汪乙生 ..等
上傳單位Department: 化學工程與材料工程系
上傳時間Date: 2011-5-29
上傳者Author: 連崇閔
審核單位Department: 化學工程與材料工程系
審核老師Teacher: 林浩
檔案類型Categories: 論文Thesis
關鍵詞Keyword: Ferrocene , Electrode , Hydrogen Peroxide , Glucose , Sensitivity
摘要Abstract: A study was conducted to use the ferrocene to modify the carbon paste electrode which was used as the working electrode to detect the responding current of reduction of hydrogen peroxide and then the concentration of hydrogen peroxide could be obtained from the responding current and consequently, the concentration of the glucose could be determined. The TB (Time Base) graphs for different operating potentials, and pH values were plotted to determine the optimum operating conditions. The results showed that the responding current for the carbon paste electrode modified with ferrocene was elevated significantly. The optimum weight ratio for ferrocene : graphite carbon powders was 3 : 7 . At 30℃ , -200mV operating potential, and in 0.05 M PBS buffer solution( pH = 7.4 ), when the carbon paste electrode was modified with ferrocene [ferrocene : graphite carbon powders = 3 : 7 ( weight ratio )] , the detection limit was 0.01 mM H2O2 , the linear range was 0.01~0.5 mM H2O2, R2=0.993, and the sensitivity was 260.6 μA/cm2ּmM H2O2 . For the glucose biosensor, the detection limit was 0.06 mM C6H12O6 ; the linear range was 0.06 ~ 2.0 mM C6H12O6 ; R2 = 0.992 and the sensitivity was 83.1 μA/cm2.mM C6H12O6 . The optimum operating conditions are -200mV operating potential, 500rpm stirring rate and in 0.05 M PBS buffer solution( pH = 7.4 ) .


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