Glucose detection Cu-based CuO membrane electrode and reparation method thereof

A thin-film electrode and glucose technology, which is used in measuring devices, material analysis by electromagnetic means, instruments, etc., can solve the problems of difficulty in precise control of CuO coating amount, difficulty in uniform dispersion of CuO, and shedding of CuO powder. Linear detection range, short response time, enhanced stability effect

Active Publication Date: 2013-12-18
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the preparation of CuO powder electrode is relatively simple, but there are also the following disadvantages in the process of use: (1) CuO is difficult to disperse uniformly in the dispersion liquid, making it difficult to accurately control the coating amount of CuO; (2) The CuO powder coated on the electrode surface is easy to self-agglomerate during the drying process, which greatly reduces the active centers participating in the electrocatalytic reaction; (3) The CuO powder is easy to fall off from the electrode surface during long-term use, resulting in electrode failure

Method used

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  • Glucose detection Cu-based CuO membrane electrode and reparation method thereof
  • Glucose detection Cu-based CuO membrane electrode and reparation method thereof
  • Glucose detection Cu-based CuO membrane electrode and reparation method thereof

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Embodiment 1

[0027] Step 1. Use a Cu substrate with a highly preferred orientation of (111) crystal plane, ultrasonically degrease the Cu substrate in ethanol, then place it in a 1mol / L HCl solution for ultrasonic etching for 15 minutes, and then use deionized Naturally air-dried after washing with water; the highly preferred orientation of the (111) crystal plane refers to the detection by X-ray diffraction (see X-ray diffraction pattern in figure 2 ), the ratio of the intensity of the diffraction peak of the (111) crystal plane to the intensity of the diffraction peak of the (200) crystal plane is not less than 20; the thickness of the Cu substrate is 1 mm, the length is 50 mm, and the width is 5 mm; the Cu substrate The mass purity is 99.5%;

[0028] Step 2. Place the Cu substrate after natural air-drying in step 1 flatly on the polytetrafluoroethylene platform, and then place it together in a hydrothermal reaction kettle with a tetrafluoroethylene liner with a volume of 500mL. Add 20...

Embodiment 2

[0032] Step 1. Using a Cu substrate with a highly preferred orientation of (111) crystal plane, ultrasonically degrease the Cu substrate in ethanol, then place it in 0.5 mol / L HCl solution for ultrasonic etching for 30 minutes, and then use Naturally air-dried after washing with ionic water; the highly preferred orientation of the (111) crystal plane means that the ratio of the intensity of the diffraction peak of the (111) crystal plane to the intensity of the diffraction peak of the (200) crystal plane is not less than 20 ; The thickness of the Cu substrate is 0.1mm, the length is 20mm, and the width is 10mm; the mass purity of the Cu substrate is 99.9%;

[0033]Step 2. Place the Cu substrate after natural air-drying in step 1 on a polytetrafluoroethylene platform, and then place it together in a hydrothermal reaction kettle with a tetrafluoroethylene liner with a volume of 1000mL. Add 20 mL of deionized water into the gap between the PTFE platforms, and finally seal the hyd...

Embodiment 3

[0037] Step 1. Using a Cu substrate with a highly preferred orientation of (111) crystal plane, ultrasonically degrease the Cu substrate in ethanol, then place it in 0.5 mol / L HCl solution for ultrasonic etching for 30 minutes, and then use Naturally air-dried after washing with ionic water; the highly preferred orientation of the (111) crystal plane means that the ratio of the intensity of the diffraction peak of the (111) crystal plane to the intensity of the diffraction peak of the (200) crystal plane is not less than 20 ; The thickness of the Cu substrate is 1mm, the length is 60mm, and the width is 25mm; the mass purity of the Cu substrate is 99.9%;

[0038] Step 2. Place the Cu substrate after natural air-drying in step 1 on a polytetrafluoroethylene platform, and then place it together in a hydrothermal reaction kettle with a tetrafluoroethylene liner with a volume of 1000mL. Add 40mL of deionized water into the gap between the PTFE platforms, and finally seal the hydro...

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Abstract

The invention discloses a glucose detection Cu-based CuO membrane electrode which comprises a Cu substrate and a CuO membrane attached on the surface of the Cu substrate, wherein the CuO membrane comprises a plurality of flower-like structure units, each flower-like structure unit is formed by self-assembling a CuO nano sheet vertical to the Cu substrate. In addition, the invention also discloses a preparation method of the Cu-based CuO membrane electrode. According to the Cu-based CuO membrane electrode, the preparation of a CuO active material and the combination with a conductive base body are synchronously completed, and assembling steps of a glucose non-enzyme biosensor are reduced. The CuO membrane of the glucose detection Cu-based CuO membrane electrode grows in situ on the surface of a metal Cu base body, the combining property of the CuO membrane and a base body material is good, and the stability is enhanced; the CuO membrane shows a well-aligned micro / nano hierarchical structure, and the problem of active center reduction caused by agglomeration when a powder body material is coated on the base body is not caused, therefore the electrocatalytic activity is high.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, and in particular relates to a Cu-based CuO film electrode for glucose detection and a preparation method thereof. Background technique [0002] Rapid and accurate determination of blood glucose has important practical significance for the diagnosis and treatment of diabetes. Traditional ultraviolet, fluorescence and other methods can be used to determine the content of glucose. However, the absorption peak intensity of glucose in the ultraviolet-visible light range is weak, which cannot meet the high sensitivity requirements for glucose detection in the medical field. However, the fluorescent method needs to graft fluorescent groups on the glucose molecules, and the operation process is very complicated. It is in such a situation that the glucose electrochemical biosensor came into being. [0003] Glucose electrochemical biosensors can be divided into enzymatic glucose s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327
Inventor 李纲汤慧萍张文彦李广忠迟煜頔李亚宁康新婷沈垒
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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