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Ni (OH) 2 nanosheet sensor for non-enzymatic glucose detection as well as preparation method and application of Ni (OH) 2 nanosheet sensor

A technology of glucose and nanosheets, which is applied in the field of glucose detection sensor materials, can solve the shortage of glucose catalysts and other problems, and achieve the effects of improved glucose sensing performance, low production cost, and simple and easy-to-operate methods

Active Publication Date: 2021-09-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a green, energy-saving and easy synthetic Ni(OH) 2 nanosheet approach

Method used

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  • Ni (OH) 2 nanosheet sensor for non-enzymatic glucose detection as well as preparation method and application of Ni (OH) 2 nanosheet sensor
  • Ni (OH) 2 nanosheet sensor for non-enzymatic glucose detection as well as preparation method and application of Ni (OH) 2 nanosheet sensor
  • Ni (OH) 2 nanosheet sensor for non-enzymatic glucose detection as well as preparation method and application of Ni (OH) 2 nanosheet sensor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Clean the nickel foam substrate and place it in ethanol and aqueous solution for ultrasonication for 30 minutes respectively;

[0057] (2) rinse the nickel foam substrate in step (1) with pure water to obtain the nickel foam substrate after washing, and set aside;

[0058] (3) Synthesis of Ni(OH) by electrodeposition in a three-electrode system 2 The nanosheet, the nickel foam substrate washed in step (2) is used as a working electrode, Ag / AgCl is used as a reference electrode, and Pt is used as a counter electrode. Immerse the nickel foam substrate in 250mL of 0.05mol / L nickel acetate solution at 5mA / cm 2 Deposited at a current density of 100s to obtain Ni(OH) for non-enzymatic glucose detection 2 nanosheet sensor.

[0059] (4) the resulting Ni(OH) for non-enzymatic glucose detection 2 The nanosheet sensor was cleaned with deionized water, dried, and the obtained Ni(OH) 2 / NF electrode (the Ni(OH) for non-enzymatic glucose detection 2 Glucose sensing performa...

Embodiment 2

[0062] (1) With reference to the synthetic method of Example 1, but the described nickel acetate solution concentration of step (3) is 0.2mol / L, and described deposition current density is 20mA / cm 2 , to obtain Ni(OH) for non-enzymatic glucose detection 2 Nanosheet sensor;

[0063] (2) Utilize the three-electrode system to assess the Ni(OH) for non-enzymatic glucose detection 2 For the glucose sensing performance of the nanosheet sensor, the test method refers to Example 1, but the concentration of the potassium hydroxide electrolyte is 0.2M, and the glucose sensitivity of the sensor is measured to be 15476 μA mM -1 cm -2 .

[0064] The Ni(OH) that embodiment 2 obtains is used for non-enzymatic glucose detection 2 The nanosheet sensor is a nanosheet structure with a diameter of ≤200nm, and its scanning electron microscope image can be referred to figure 1 shown.

Embodiment 3

[0066] (1) With reference to the synthetic method of Example 1, but the described nickel acetate solution concentration of step (3) is 0.1mol / L, and described deposition current density is 10mA / cm 2 , to get a loaded Ni(OH) 2 Nickel foam of nanosheets, i.e. the Ni(OH) for non-enzymatic glucose detection 2 Nanosheet sensor;

[0067] (2) Utilize the three-electrode system to assess the Ni(OH) for non-enzymatic glucose detection 2 For the glucose sensing performance of the nanosheet sensor, the test method refers to Example 1, but the concentration of the potassium hydroxide electrolyte is 0.1M, and the glucose sensitivity is 11171 μA mM -1 cm -2 ,Such as Figure 9 shown.

[0068] Wherein the obtained Ni(OH) for non-enzymatic glucose detection 2 SEM images of nanosheet sensors such as figure 1 As shown, the morphology of the obtained material is a nanosheet structure, and its diameter is ≤200nm.

[0069] Wherein the obtained Ni(OH) for non-enzymatic glucose detection 2 T...

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Abstract

The invention belongs to the technical field of glucose detection sensor materials, and discloses a Ni (OH) 2 nanosheet sensor for non-enzymatic glucose detection as well as a preparation method and application of the Ni (OH) 2 nanosheet sensor. The method comprises the following steps: dissolving nickel acetate in deionized water to obtain a deposition solution; immersing a foamed nickel substrate into a nickel acetate solution, performing depositing under constant current density to obtain a Ni (OH) 2 nanosheet, and treating the Ni (OH) 2 nanosheet by using argon plasma with constant power to obtain the sensor. The preparation method disclosed by the invention is simple, the Ni (OH) 2 nanosheet is synthesized in one step by utilizing an electro-deposition method, the efficient detection of the glucose concentration is realized, and the performance is further improved through a plasma treatment technology. The Ni (OH) 2 nanosheet is applied to the field of glucose detection, and is high in current response, wide in detection range and good in selectivity.

Description

technical field [0001] The invention belongs to the technical field of glucose detection sensor materials, in particular to a Ni(OH) non-enzymatic glucose detection 2 Nanosheet sensor and its preparation method and application. Background technique [0002] With the continuous improvement of living standards, diabetes has become a worldwide chronic disease, which will bring stroke, renal failure, heart disease and other related diseases. Glucose is the main molecule in diabetes monitoring, and its concentration changes have a vital effect on human health. Accurate measurement of glucose also has profound implications for future preventive medical diagnosis, food safety, environmental monitoring, drug analysis, and biotechnology. [0003] Among the many methods used for glucose measurement, optical and electrochemical analysis have been extensively studied. Optical methods use a color change in the indicator to reflect the concentration of glucose. The color of the dye ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327G01N27/30G01N27/38
CPCG01N27/3278G01N27/308G01N27/38
Inventor 陈燕仲啸何祖韵陈海军
Owner SOUTH CHINA UNIV OF TECH
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