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標題Title: The Stirring Rate on the Sensitivity of Detection of Hydrogen Peroxide for the Carbon Paste Electrode Modified with Copper Hexacyanoferrate
作者Authors: 林庭立,蕭佳政 ..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: 林庭立
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: 專題報告Project Report
關鍵詞Keyword: Stirring Rate , Copper Hexacyanoferrate , Electrode , Sensitivity , Hydrogen Peroxide
摘要Abstract: A study was conducted to use the Coprecipitation method to prepare the Copper(Ⅱ) Hexacyanoferrate(Cu(Ⅱ)HCF) [Cu(Ⅱ)HCF : graphite carbon powders = 3 : 7(weight ratio)]. The Cu(Ⅱ)HCF was used to modify the carbon paste electrode because the Cu(Ⅱ)HCF possessed the excellent catalytic characteristic and it could be used with the graphite carbon powders and carbon paste to make the carbon paste electrode to elevate the responding current of the hydrogen peroxide at different operating conditions. At 30℃,
-0.2V operating potential, and in 0.05 M phosphate buffer solution (PBS), the TB (Time Base) graphs for the carbon paste electrode at different stirring rates were plotted to evaluate the effect of the stirring rate on the responding current of detection of hydrogen peroxide. The results showed that at the optimum operating conditions -0.2 V operating potential, 500rpm stirring rate and in 0.05M phosphate buffer solution(pH=7.4), the detection limit was 0.02 mM H2O2, the linear range was 0.02~2.6 mM H2O2, R2=0.9945 and the sensitivity was 121.606 μA/cm2ּmM H2O2.



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