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One-dimensional copper oxide nano-array glucose sensor electrode material and preparation method thereof

A glucose sensor, nanoarray technology, applied in copper oxide/copper hydroxide, material analysis by electromagnetic means, nanotechnology, etc., can solve the controllability of difficult material morphology, the operation is not simple enough, and the synthesis yield is not high. Advanced problems, to achieve the effect of good conductivity and electron transport ability, good selectivity, and low cost

Inactive Publication Date: 2013-08-28
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the preparation method of the above-mentioned copper oxide nano-array electrode material is widely used, there are certain limitations in the preparation process. If some require a relatively high synthesis temperature or need to be coated on the surface of a conductive substrate, the operation is not simple enough, and some Surfactants need to be added, which has a certain degree of pollution to the environment; some synthesis requires an external copper source or the synthesis yield is not high, the cost is relatively high, and some are not easy to control the shape of the material

Method used

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  • One-dimensional copper oxide nano-array glucose sensor electrode material and preparation method thereof
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  • One-dimensional copper oxide nano-array glucose sensor electrode material and preparation method thereof

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Effect test

Embodiment 1

[0034] a. Clean the copper sheet with a purity of 99.99% with concentrated hydrochloric acid for 5-10 minutes, then ultrasonically clean it with absolute ethanol or acetone for 10 minutes, then clean it with deionized water, and coat one side (back) of the copper sheet with a layer of insulation Non-reactive materials to avoid contact with the electrolyte during electrolysis below.

[0035] b. take the copper sheet processed in step a as the working electrode; the platinum electrode as the counter electrode; the saturated calomel electrode as the reference electrode, and 50ml of KOH with a concentration of 3.0mol / L as the electrolyte solution, and immerse the copper sheet in the electrolyte solution , with an immersion area of ​​1.0cm 2 , using the electrochemical workstation to apply a constant current of 3.0mA cm -2 , for anodic polarization reaction;

[0036] c. After 25 minutes of polarization reaction, take out the copper sheet, wash the surface of the electrode with et...

Embodiment 2

[0044] a. Clean the copper sheet with a purity of 99.99% with concentrated hydrochloric acid for 5-10 minutes, then ultrasonically clean it with absolute ethanol or acetone for 10 minutes, then clean it with deionized water, and coat one side (back) of the copper sheet with a layer of insulation Non-reactive materials to avoid contact with the electrolyte during electrolysis below.

[0045] b. take the copper sheet processed in step a as the working electrode; the platinum electrode as the counter electrode; the saturated calomel electrode as the reference electrode, and 50ml of KOH with a concentration of 2.0mol / L as the electrolyte solution, and immerse the copper sheet in the electrolyte solution , with an immersion area of ​​1.0cm 2 , using the electrochemical workstation to apply a constant current of 2.5mA cm -2 , for the anodic polarization reaction.

[0046] c. After 25 minutes of polarization reaction, take out the copper sheet, wash the surface of the electrode wit...

Embodiment 3

[0051] a. Clean the copper sheet with a purity of 99.99% with concentrated hydrochloric acid for 5-10 minutes, then ultrasonically clean it with absolute ethanol or acetone for 10 minutes, then clean it with deionized water, and coat one side (back) of the copper sheet with a layer of insulation Non-reactive materials to avoid contact with the electrolyte during electrolysis below.

[0052] b. take the copper sheet processed in step a as the working electrode; the platinum electrode as the counter electrode; the saturated calomel electrode as the reference electrode, and 50ml of KOH with a concentration of 1.5mol / L as the electrolyte solution, and immerse the copper sheet in the electrolyte solution , with an immersion area of ​​1.0cm 2 , using the electrochemical workstation to apply a constant current of 2.0mA cm -2 , for the anodic polarization reaction.

[0053] c. After 20 minutes of polarization reaction, take out the copper sheet, wash the surface of the electrode wit...

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Abstract

The invention provides a one-dimensional copper oxide nano-array glucose sensor electrode material and a preparation method thereof. The one-dimensional copper oxide nano-array glucose sensor electrode material is characterized in that a one-dimensional copper oxide nano-array grows on a copper sheet in situ. The preparation method comprises the following steps of based on a three-electrode system, etching the surface of a copper substrate by an anodic oxidation method and carrying out calcination so that a large-area, compact and uniform copper oxide nano-array is formed on the copper substrate. The preparation method has the advantages of mild reaction conditions, simple operation and low cost. The one-dimensional copper oxide nano-array glucose sensor electrode material has structural advantages such as obvious size effect, high specific surface area and high activity site expose. Through vertical growth orientation and independent constitutional units, the one-dimensional copper oxide nano-array glucose sensor electrode material has good conductivity and a good electron transmission capability. Therefore, in electroanalysis detection of a glucose oxidation reaction, the one-dimensional copper oxide nano-array glucose sensor electrode material has excellent sensitivity, a very wide linear range, a very low detection limit, good selectivity, good repeatability and good stability.

Description

technical field [0001] The invention belongs to the field of inorganic functional materials, and in particular relates to a one-dimensional copper oxide nano-array sensor electrode material and a preparation method thereof. The nano-material can be used for an enzyme-free glucose biosensor electrode. Background technique [0002] The analysis of various chemical components in human blood has always been one of the important standards for measuring the health of the human body. Among them, the detection of blood glucose level provides an important basis for clinical diagnosis of diabetes and measurement of metabolic level, and also provides the most effective solution for early prevention of complications caused by control of diabetes [Chem.Rev.2008,108,814]. At present, there are many methods for detecting blood glucose, among which electrochemical analysis of blood glucose concentration has attracted much attention due to its characteristics of rapidity, sensitivity and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02B82Y30/00B82Y40/00G01N27/327
Inventor 刘军枫许丽刘熙俊孙晓明
Owner BEIJING UNIV OF CHEM TECH
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