MB @ ZIF-8/COOH-MWCNTs Composite-based Ratiometric Electrochemical Sensor for Detection of Hydrogen Peroxide
文献类型： 外文期刊
第一作者： Zhao, Si-Jia
作者： Zhao, Si-Jia;He, Feng;Liu, Tian-Di;Zhang, Shao-Ying;Li, Teng-Fei;Wang, Jing;He, Feng;Du, Peng-Fei
作者机构：
关键词： Hydrogen peroxide; 4-Aminophenylboronic acid; Methylene blue; Ratiometric electrochemical sensor
期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.2； 五年影响因子：1.0 ）
ISSN： 0253-3820
年卷期： 2023 年 51 卷 9 期
页码：
收录情况： SCI
摘要： A ratiometric electrochemical sensor was constructed for specific detection of hydrogen peroxide (H202) based on ZIF-8/COOH-MWCNTs composite material-modified electrode with the oxidation peak current of methylene blue (MB) as internal reference signal. 4-aminophenylboronic acid (PABA) was introduced to react with H202 to generate electroactive substance 4-aminophenol (PAP). The quantitative detection of 142O2 was achieved by using the ratio of the oxidation peak current of PAP to MB as the ratio current signal. The quantitative detection of H202 was realized. ZIF-8/COOH-MWCNTs had good electrocatalytic and conductive properties, which could improve the detection sensitivity of sensors. The results showed that a two-electron and two-protons process of PAP oxidation occured on the modified electrode. The linear detection range of sensor for H202 was 5-200 mu mol/L, and the detection limit (SIN = 3) was 0.2 mu mol/L. The sensor had good sensitivity and stability, and was successfully applied to detection of H202 in milk samlple with satisfactory results.
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