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

An array electrode and nano-array technology, applied in the field of nano-electrode materials, can solve the problems of high equipment cost and labor cost, complicated and cumbersome operation, and high detection limit, and achieve the effects of simple operation, simple preparation method and low detection limit.

Inactive Publication Date: 2016-07-06
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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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,

Method used

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

Examples

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Embodiment 1

[0051] Such as figure 1 As shown, a gold nano-array electrode is prepared by the following steps:

[0052] Step a, slide glass (such as figure 1 The label 1 is a glass slide, which is used as a glass substrate) into acetone, ethanol, and deionized water for ultrasonic cleaning in turn, and each liquid is ultrasonically cleaned for 40 minutes, and then the cleaned glass slide is put into an oven for Drying treatment, the drying temperature is 70°C, and the drying time is 20 minutes; after the water on the glass slide is completely evaporated, place the glass slide in an ultraviolet ozone cleaning machine for 30 minutes of irradiation, so as to obtain a glass slide with a hydrophilic surface. piece.

[0053] Step b, take 50 microliters of polystyrene colloidal suspension (2.5wt.%) with a diameter of 350-1000nm, and mix it with ethanol in equal volume, and then carry out 10min of ultrasonic vibration treatment, so as to obtain uniformly dispersed polystyrene Ethanol diluent of...

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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,...

Claims

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Application Information

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IPC IPC(8): G01N27/30G01N27/48B82Y30/00B82Y40/00
CPCG01N27/30B82Y30/00B82Y40/00G01N27/48
Inventor 李越孙一强杭立峰李昕扬蔡伟平
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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