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Preparation method of Pt nanometer particle-modified Cu nanowire array electrode and use of Pt nanometer particle-modified Cu nanowire array electrode in enzyme-free glucose sensor

A nanowire array and nanoparticle technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of high requirements for experimental equipment, high price, unsatisfactory linear range, etc.

Inactive Publication Date: 2016-06-15
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] But the above method, the preparation process is complicated, the price is expensive, the requirements for experimental equipment are high, and the electrochemical performance, such as sensitivity, detection limit, linear range is not satisfactory

Method used

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  • Preparation method of Pt nanometer particle-modified Cu nanowire array electrode and use of Pt nanometer particle-modified Cu nanowire array electrode in enzyme-free glucose sensor
  • Preparation method of Pt nanometer particle-modified Cu nanowire array electrode and use of Pt nanometer particle-modified Cu nanowire array electrode in enzyme-free glucose sensor
  • Preparation method of Pt nanometer particle-modified Cu nanowire array electrode and use of Pt nanometer particle-modified Cu nanowire array electrode in enzyme-free glucose sensor

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Experimental program
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Effect test

Embodiment 1

[0042] Before using the Cu foil, it was repeatedly ultrasonically cleaned with deionized water and ethanol until the surface of the Cu foil was mirror-smooth. Scan 10 circles until the scanning curve is stable. Before using the AAO template, one side of the AAO template is sprayed with gold as the growth substrate of Cu nanowires, and conductive glue is dripped on the surface of the Cu foil electrode, and the gold-sprayed side of the AAO template is fixed on the surface of the Cu foil, and the edge of the AAO template is fixed with silicone rubber. , let it dry for a day. This was used as a working electrode to deposit Cu nanowire arrays decorated with Pt nanoparticles.

[0043] In order to ensure that the electrolyte can completely enter the pores of the above-mentioned treated AAO template, the deposition template is immersed in an electrolyte solution with a concentration of copper sulfate ranging from 0.75 to 1.25M for 20 minutes before deposition. Using an electrochemic...

Embodiment 2

[0046] Before using the Cu foil, it was repeatedly ultrasonically cleaned with deionized water and ethanol until the surface of the Cu foil was mirror-smooth. Scan 10 circles until the scanning curve is stable. Before using the AAO template, one side of the AAO template is sprayed with gold as the growth substrate of Cu nanowires, and conductive glue is dripped on the surface of the Cu foil electrode, and the gold-sprayed side of the AAO template is fixed on the surface of the Cu foil, and the edge of the AAO template is fixed with silicone rubber. , let it dry for a day. This was used as a working electrode to deposit Cu nanowire arrays decorated with Pt nanoparticles.

[0047] In order to ensure that the electrolyte can completely enter the pores of the above-mentioned treated AAO template, the deposition template is immersed in an electrolyte solution with a concentration of copper sulfate ranging from 0.75 to 1.25M for 20 minutes before deposition. Using an electrochemic...

Embodiment 3

[0051] Before using the Cu foil, it was repeatedly ultrasonically cleaned with deionized water and ethanol until the surface of the Cu foil was mirror-smooth. Scan 10 circles until the scanning curve is stable. Before using the AAO template, one side of the AAO template is sprayed with gold as the growth substrate of Cu nanowires, and conductive glue is dripped on the surface of the Cu foil electrode, and the gold-sprayed side of the AAO template is fixed on the surface of the Cu foil, and the edge of the AAO template is fixed with silicone rubber. , let it dry for a day. This was used as a working electrode to deposit Cu nanowire arrays decorated with Pt nanoparticles.

[0052] In order to ensure that the electrolyte can completely enter the pores of the above-mentioned treated AAO template, the deposition template is immersed in an electrolyte solution with a concentration of copper sulfate ranging from 0.75 to 1.25M for 20 minutes before deposition. Using an electrochemic...

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Abstract

The invention relates to a preparation method of a Pt nanometer particle-modified Cu nanowire array electrode and a use of the Pt nanometer particle-modified Cu nanowire array electrode in an enzyme-free glucose sensor. The preparation method comprises spraying gold to a porous AAO template, fixing Cu foil to the surface of the electrode with a sprayed gold layer through a conductive adhesive, sealing the surrounding parts of a template through insulative silicone rubber, constructing a three-electrode system of the template as a work electrode, a saturated calomel electrode as a reference electrode and a platinum electrode as a counter electrode, putting the three-electrode system into CuSO4 and H2SO4 electrolyte, carrying out constant current electro-deposition, then carrying out immersion in a NaOH solution to remove the AAO template so that a Cu nanowire array structure is obtained, carrying out repeated cleaning through distilled water and carrying out constant potential deposition in H2PtCl6 and H2SO4 electrolyte to obtain the Pt nanometer particle-modified Cu nanowire array electrode. The Pt nanometer particle-modified Cu nanowire array electrode is used for an enzyme-free glucose sensor.

Description

technical field [0001] The invention belongs to the electrode material technology, in particular to a preparation method of a Cu nanowire array electrode modified by Pt nanoparticles and its application in an enzyme-free glucose sensor. Background technique [0002] Blood glucose monitoring is of great significance to the condition control of diabetic patients. At present, the main means of blood glucose detection include invasive blood glucose detector and continuous blood glucose monitoring system. Invasive blood glucose detectors will cause pain to patients and cannot achieve continuous monitoring; while the enzyme glucose electrode in the existing continuous blood glucose monitoring system is easily inactivated in the patient's body, thus affecting the repeatability, stability and selectivity of the sensor . Therefore, the research of enzyme-free glucose sensor has gradually attracted people's attention. [0003] Enzyme-free glucose sensors detect molecules through di...

Claims

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Application Information

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IPC IPC(8): G01N27/416B82Y30/00B82Y40/00
CPCG01N27/416B82Y30/00B82Y40/00
Inventor 许鑫华王超郑娇曹真真
Owner TIANJIN UNIV
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