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High-sensitivity electrode material for glucose non-enzymatic sensor and preparation method of electrode material

A glucose sensor and high-sensitivity technology, applied in the field of glucose detection, can solve the problems of complicated steps, high equipment requirements, long hydrothermal method, etc., and achieve the effects of simple method, low equipment cost, and short preparation time.

Active Publication Date: 2017-01-04
ZHONGYU BEIJING BIOLOGICAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The hydrothermal method takes a long time, the chemical vapor deposition method has high cost and high equipment requirements, and the traditional electrochemical deposition method has the disadvantages of cumbersome steps when preparing complex electrode materials

Method used

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  • High-sensitivity electrode material for glucose non-enzymatic sensor and preparation method of electrode material
  • High-sensitivity electrode material for glucose non-enzymatic sensor and preparation method of electrode material
  • High-sensitivity electrode material for glucose non-enzymatic sensor and preparation method of electrode material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] First configure 20mM (NH 4 ) 2 SO 4 -10mM CuSO 4 -10mM CoSO 4 Mix the solution, then wash with 1M H 2 SO 4 Adjust the pH to 4 as the electrolyte for later use, and pass through argon gas for 30 minutes to remove dissolved oxygen. Two pieces of ruthenium-plated titanium are used as auxiliary anodes, and one piece of nickel foam is used as the working electrode (cathode), placed in parallel in the order of anode-cathode-anode, adding the prepared electrolyte, and applying 25mA·cm -2 The electric current is deposited for 300s. After the end of the electrodeposition process, the electrodes were quickly taken out, washed with water, and then dried for later use. After the composite electrode material is welded and packaged with wires, it is used as the working electrode of the glucose sensor, and the nickel wire is used as the auxiliary electrode to detect glucose in 0.1M KOH solution, with a sensitivity as high as 40.2mA·mM -1 cm -2 .

Embodiment 2

[0041] First configure 10mM NH 4 NO 3 -10mM Cu(NO 3 ) 2 -10mM Co(NO 3 ) 2 Mix the solution, then wash with 1M HNO 3 Adjust the pH to 4.5 as the electrolyte for later use, and pass through argon for 30 minutes to remove dissolved oxygen. Two pieces of ruthenium-plated titanium are used as auxiliary anodes, and one piece of nickel foam is used as a working electrode (cathode), placed in parallel in the order of anode-cathode-anode, and the prepared electrolyte is added. Apply 10mA·cm -2 The electric current is deposited for 360s. After the end of the electrodeposition process, the electrodes were quickly taken out, washed with water, and then dried for later use. After the composite electrode material is welded and packaged with wires, it is used as the working electrode of the glucose sensor, and the nickel wire is used as the auxiliary electrode to detect glucose in 0.1M KOH solution, with a sensitivity as high as 38.4mA·mM -1 cm -2 .

Embodiment 3

[0043] First configure 25mM (NH 4 ) 2 SO 4 -5mM CuSO 4 -20mM CoSO 4 Mix the solution, then wash with 1M H 2 SO 4 Adjust the pH to 3.5 as the electrolyte for later use, and pass through argon for 30 minutes to remove dissolved oxygen. Two pieces of ruthenium-plated titanium are used as auxiliary anodes, and one piece of nickel foam is used as the working electrode (cathode), placed in parallel in the order of anode-cathode-anode, adding the prepared electrolyte, and applying 100mAcm -2 The current is deposited for 120s. After the end of the electrodeposition process, the electrodes were quickly taken out, washed with water, and then dried for later use. After the composite electrode material is welded and packaged with wires, it is used as the working electrode of the glucose sensor, and the nickel wire is used as the auxiliary electrode to detect glucose in 0.1M KOH solution, with a sensitivity as high as 42.6mA·mM -1 cm -2 .

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Abstract

The invention provides a high-sensitivity electrode material for a glucose non-enzymatic sensor and a preparation method of the electrode material. The high-sensitivity electrode material is specifically prepared by a simple one-step electrodepositing method; in a first-time preparation link, a controllable deposition process of copper nanoparticles and cobalt hydroxide nanosheets is realized by controlling electrochemical reduction of copper ions and electrochemical hydrogen evolution and induction of cobalt ions, and the electrode material, provided with an ordered multistage structure containing the nanosheets and the nanoparticles and formed by mutually staggering and supporting the cobalt hydroxide nanosheets and the copper metal nanoparticles which are jointly loaded on a conducting substrate, for the glucose non-enzymatic sensor is obtained. The preparation method provided by the invention is simple in process and is easy in operation; required equipment is low in cost; the sensitivity of the prepared electrode material when being used for the glucose non-enzymatic sensor exceeds 20mA mM<-1> cm<-2>.

Description

technical field [0001] The invention belongs to the field of glucose detection, in particular to a glucose electrochemical enzyme-free sensor electrode material and a preparation method thereof. Background technique [0002] The detection of glucose is widely used in medical treatment, food industry and bioengineering. In the bio-fermentation industry, glucose is an important nutrient source for a variety of bacterial fermentations. Quickly and accurately obtaining the glucose concentration is helpful for timely adjustment and optimization of the fermentation process. In the medical field, the concentration of glucose in the blood is also an important standard for human health. In 2015, there were more than 100 million diabetics in China. The development of a high-sensitivity, fast, and low-cost rapid blood glucose detection method is also an urgent need in reality. In addition, the rapid quantification of the glucose concentration in the peritoneal dialysis fluid also has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327
CPCG01N27/3278
Inventor 贾薇
Owner ZHONGYU BEIJING BIOLOGICAL ENG
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