基于对羟基苯硼酸为前驱体的金纳米粒子修饰电极电化学检测过氧化氢

以对羟基苯硼酸为前驱体,利用过氧化氢（H_2O_2）可以定量氧化对羟基苯硼酸产生对羟基苯酚的原理,以反应产物对羟基苯酚为电化学信号物质,结合金纳米粒子修饰玻碳电极（AuNPs/GCE）,发展了一种间接检测H_2O_2的电化学方法.由于AuNPs/GCE具有有效电子传递性能和比表面积大等优点,对硼酸氧化产物具有较高的催化活性,因此在含1.0 mmol·L~（-1）对羟基苯硼酸的0.1 mol·L~（-1）pH 7.5 PBS中,AuNPs/GCE可以检测到1.0~1.0×10~3μmol·L~（-1）的H_2O_2,检测限为0.5μmol·L~（-1）.同时,该方法具有良好的选择性和重现性,且操...

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Bibliographic Details
Published in电化学 Vol. 22; no. 1; pp. 88 - 93
Main Author 王春燕 刘晓秋 戚颖欣
Format Journal Article
LanguageChinese
Published 29.02.2016
Subjects
对羟基苯硼酸
电化学检测
过氧化氢
金纳米粒子
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Summary:以对羟基苯硼酸为前驱体,利用过氧化氢（H_2O_2）可以定量氧化对羟基苯硼酸产生对羟基苯酚的原理,以反应产物对羟基苯酚为电化学信号物质,结合金纳米粒子修饰玻碳电极（AuNPs/GCE）,发展了一种间接检测H_2O_2的电化学方法.由于AuNPs/GCE具有有效电子传递性能和比表面积大等优点,对硼酸氧化产物具有较高的催化活性,因此在含1.0 mmol·L~（-1）对羟基苯硼酸的0.1 mol·L~（-1）pH 7.5 PBS中,AuNPs/GCE可以检测到1.0~1.0×10~3μmol·L~（-1）的H_2O_2,检测限为0.5μmol·L~（-1）.同时,该方法具有良好的选择性和重现性,且操作简单、速度快、价格低廉,非常适用于实际样品中H_2O_2含量的测定.
Bibliography:p-hydroxyphenylboronic acid; hydrogen peroxide; gold nanoparticles; electrochemical detection
WANG Chun-yan, LIU Xiao-qiu, QI Ying-xin（1. Institute of Food Engineering, Jilin Engineering Normal University, Changchun 130052, China; 2. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, the Chinese Academy of Sciences, Changchun 130022, China）
We developed a new method for electrochemical detection of hydrogen peroxide （H202） based on boronate oxidation of p-hydroxyphenylboronic acid. This method using p-aminophenol which is produced from the reaction of H2O2 and p-aminophenylboronic acid as a well electrochemical probe, combined with a gold nanoparticles （AuNPs） modified electrode for an indirect detection of H2O2. Because of the large surface area and enhanced electrocatalytic behavior by the AuNPs modified electrode, the detection sensitivity was improved. The method could detect H2O2 in the concentration range of 1.0 - 100 μmol. L-1 and 0. 1 - 1.0 mmol.L-1 in 0.1 mol
ISSN:1006-3471
2993-074X
DOI:10.13208/j.electrochem.150908