Gold nano array electrode and non-enzyme hydrogen peroxide sensor manufactured by same

Abstract

The invention discloses a gold nano array electrode and a non-enzyme hydrogen peroxide sensor manufactured by the same.The gold nano array electrode is prepared by adopting the following steps that a silicon-based single-layer polymer colloidal crystal array is prepared, and a gold film with the thickness of 10-100 nm deposits on the surface of a template by using the silicon-based single-layer polymer colloidal crystal array as the template and adopting a physical deposition method; the template deposited with the gold film is subjected to thermal decomposition and annealing treatment so as to remove the single-layer polymer colloidal crystal array, and a silicon-based gold nano array is obtained; the silicon-based gold nano array directly serves as the gold nano array electrode.The gold nano array electrode is low in detection limit, high in sensitivity and good in stability, and the preparation method is simple, simple and convenient to operate, economical and environmentally-friendly.

Description

technical field [0001] The invention relates to the field of nanometer electrode materials, in particular to a gold nanometer array electrode and an enzyme-free hydrogen peroxide sensor prepared therefrom. Background technique [0002] Hydrogen peroxide (H 2 o 2 ) is not only an intermediate product or raw material of many biological and chemical reactions, but also a by-product of many enzyme reactions in organisms, so it is needed in many fields such as food, pharmaceuticals, bioengineering, clinical testing, pollution control, textiles, paper bleaching, and sterilization. to H 2 o 2 concentration was detected. [0003] Currently, the common pair H 2 o 2 There are mainly titration methods, spectroscopic methods, fluorescence methods, chemical spectroscopy, electrochemical methods, etc.; among these detection methods, catalase-based biosensors have the advantages of low cost, easy operation, and fast response. Due to the advantages of high speed and high sensitivity,...

AI Technical Summary

Problems solved by technology

In the prior art, gold nanoparticle-based biosensors all use gold nanoparticle-modified electrodes, which are prepared by coating a layer of gold nanoparticles on an existing electrode plate, and the detection results It will be greatly limited by the existing coating process (for example: coating uniformity, coating thickness, properties of coating agents, etc.), so the existing gold nanoparticle modified electrode not only has high detection limit, low sensitivity, and poor stability, Moreover, its preparation process needs to set up a special coating link, the operation is complicated and cumbersome, and the equipment cost and labor cost are high.

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