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A Novel Electrochemical Sensor for Hydrogen Peroxide

A hydrogen peroxide and electrochemical technology, applied in the field of electroanalytical chemistry, to achieve the effects of good stability, good preparation repeatability, and simple modification process

Inactive Publication Date: 2016-05-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, the construction of electrochemical sensors with nano-copper particles loaded on the basis of poly-p-aminobenzenesulfonic acid conductive polymer film through coordination and electrostatic interaction has not been reported in the literature.

Method used

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  • A Novel Electrochemical Sensor for Hydrogen Peroxide
  • A Novel Electrochemical Sensor for Hydrogen Peroxide
  • A Novel Electrochemical Sensor for Hydrogen Peroxide

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Embodiment Construction

[0023] The invention discloses the preparation of a novel nano-copper particle / poly-p-aminobenzenesulfonic acid modified electrode electrochemical sensor and the method for electrochemically measuring hydrogen peroxide. Transition metal ions have strong coordination and electrostatic interactions. Copper sulfate solution is used as the deposition solution, and nano-copper particles are loaded on the poly-p-aminobenzenesulfonic acid film by electrochemical deposition. The prepared nano-copper particles are embedded in the polymer mesh with uniform distribution and good stability, and can be used for the construction of hydrogen peroxide sensors.

[0024] Compared with the bare glassy carbon electrode and the poly(p-aminobenzenesulfonic acid-modified electrode) prepared by the present invention, the electrical activity of the copper particles is significantly increased, and the resistance to hydrogen peroxide is greatly improved. electrocatalytic reduction activity.

[0025] Th...

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Abstract

The invention discloses a novel hydrogen peroxide electrochemical sensor. With utilization of stronger cooperation action and electrostatic action between sulfonic acid groups of a poly(p-aminobenzene sulfonic acid) membrane and transition metal ions, and with a copper sulfate solution as a deposition solution, nano copper particles are loaded on the poly(p-aminobenzene sulfonic acid) membrane by an electrochemical deposition method. With utilization of high electron conduction ability, electrocatalytic activity and biocompatibility of the nano copper particles and with combination of advantages that the poly(p-aminobenzene sulfonic acid) has a good film-forming property, many binding activity sites with the copper ions, stronger binding force with a substrate and the like, a prepared nano copper particle / poly(p-aminobenzene sulfonic acid) modified electrode is used as the hydrogen peroxide electrochemical sensor, has remarkably-enhanced electrocatalytic reduction activity to hydrogen peroxide, high response sensitivity and good stability, and can be used for rapid detection of hydrogen peroxide in real samples.

Description

technical field [0001] The invention belongs to the technical field of electroanalytical chemistry, and specifically relates to the preparation of a novel nano-copper particle / poly-p-aminobenzenesulfonic acid modified electrode electrochemical sensor and an electroanalytic method for measuring hydrogen peroxide. Background technique [0002] Hydrogen peroxide has been widely used in the fields of food, biology, medicine and environment because of its remarkable sterilizing effect. Therefore, the research on its determination method has always been a hot spot in the field of analysis. Traditional H 2 o 2 The determination methods include electrochemical method, reduction titration method, spectroscopic method and chemiluminescence method. Nano-metal particles are widely used in the construction of electrochemical sensors due to their high-efficiency electron conductivity, high electrocatalytic activity and good biocompatibility. Among them, nano-copper is very suitable as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/48G01N27/30
Inventor 习玲玲王凤丽
Owner ZHEJIANG UNIV
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