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Methods for preparing CuO/rGO@PNIPAm (poly(N-isopropylacrylamide)) electrode and structuring non-enzyme glucose sensor

A glucose sensor, glucose technology, applied in instruments, scientific instruments, material analysis through electromagnetic means, etc., can solve the problems of yield limitation, low synthesis steps, etc., and achieve the degree of easy compounding, low energy consumption, and significant temperature switch effect Effect

Inactive Publication Date: 2018-08-17
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the controllable preparation method of such particles is mainly based on the surface grafting method. Although this method has a high degree of controllability, relatively many synthesis steps and low yield still limit its application.

Method used

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  • Methods for preparing CuO/rGO@PNIPAm (poly(N-isopropylacrylamide)) electrode and structuring non-enzyme glucose sensor
  • Methods for preparing CuO/rGO@PNIPAm (poly(N-isopropylacrylamide)) electrode and structuring non-enzyme glucose sensor
  • Methods for preparing CuO/rGO@PNIPAm (poly(N-isopropylacrylamide)) electrode and structuring non-enzyme glucose sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a) 5g porous CuO and 5g graphene oxide were prepared into a uniformly dispersed suspension, and a CuO / rGO composite film was prepared by suction filtration with a thickness of 10 μm-30 μm.

[0028] b) Place the CuO / rGO composite film in 1g / L NIPAm monomer aqueous solution, and carry out plug-in reaction by selecting an ultrasonic horn with an ultrasonic frequency of 20kHz, and the ultrasonic power is 200W. The CuO / rGO@PNIPAm composite film was prepared as a temperature-responsive flexible electrode by ultrasonic-intermittent (N2 gas) circulation mode for polymerization reaction and cumulative ultrasonic irradiation for 1 h.

[0029] c) The CuO / rGO@PNIPAm composite film is used as the working electrode, the saturated calomel electrode (SCE) is used as the reference electrode, and the platinum electrode (Pt) is used as the auxiliary electrode. Put the three-electrode system into a weighing bottle filled with 5mM / L glucose NaOH solution, and then put the whole into a water...

Embodiment 2

[0031] a) 5g of porous CuO and 10g of graphene oxide were prepared into a uniformly dispersed suspension, and by suction filtration, a CuO / rGO composite film was prepared with a thickness of 10 μm-30 μm.

[0032] b) Place the CuO / rGO composite film in 1g / L NIPAm monomer aqueous solution, and carry out plug-in reaction by selecting an ultrasonic horn with an ultrasonic frequency of 20kHz, and the ultrasonic power is 200W. Ultrasonic-intermittent (pass N 2 The CuO / rGO@PNIPAm composite film was prepared as a temperature-responsive flexible electrode after the polymerization reaction was carried out in the gas) circulation mode, and the cumulative ultrasonic irradiation was 1 h.

[0033] c) The CuO / rGO@PNIPAm composite film is used as the working electrode, the saturated calomel electrode (SCE) is used as the reference electrode, and the platinum electrode (Pt) is used as the auxiliary electrode. Put the three-electrode system into a weighing bottle filled with 5mM / L glucose NaOH...

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Abstract

The invention relates to methods for preparing a CuO / rGO@PNIPAm compound self-support electrode and structuring a thermosensitive non-enzyme glucose sensor and an application method of the thermosensitive non-enzyme glucose sensor. The methods for preparing the CuO / rGO@PNIPAm compound self-support electrode and structuring the thermosensitive non-enzyme glucose sensor comprise preparing a CuO / GO compound membrane from porous CuO and graphene; placing the CuO / GO compound membrane into NIPAM monomer aqueous solution, performing polymerization reaction in an ultrasonic-intermittent / N2 inletting circulating manner to prepare a CuO / GO@PNIPAm compound membrane as a temperature-response flexible electrode; taking the CuO / GO@PNIPAm compound membrane as a self-support working electrode, a saturatedcalomel electrode as a reference electrode and a platinum electrode as an auxiliary electrode to structure the glucose electrochemical sensor. The glucose electrochemical sensor is applied to testingthe state of glucose molecules. The method for preparing the CuO / rGO@PNIPAm compound self-support electrode and structuring the thermosensitive non-enzyme glucose sensor has the outstanding advantages of being high in compounding liability, mild and low in energy consumption. The prepared CuO / rGO@PNIPAm compound self-support flexible electrode can be applied to non-enzyme glucose detection and achieve significant temperature switch effects.

Description

technical field [0001] The invention belongs to the field of ultrasonic synthesis, and relates to a method for preparing a CuO / rGO@PNIPAm composite self-supporting electrode and constructing a temperature-sensitive enzyme-free glucose sensor and the sensor. Background technique [0002] Electrochemical glucose sensors are widely used due to their high reliability, low cost, and ease of operation. According to whether the modified electrode contains glucose oxidase (GOx), glucose sensors can be divided into two types: glucose oxidase (GOx) sensors and nonenzymatic glucose (NEG) sensors. Among them, the enzyme-free glucose sensor is characterized by the direct electrocatalytic oxidation of glucose molecules on the electrode surface by using chemical substances with electrocatalytic activity on glucose, which avoids the interference of enzyme factors such as temperature, humidity, pH, etc. Higher sensitivity, better stability and reproducibility. [0003] The structures of di...

Claims

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Application Information

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IPC IPC(8): G01N27/327
CPCG01N27/3275
Inventor 陈芳翟薇曹琦马晓燕魏炳波
Owner NORTHWESTERN POLYTECHNICAL UNIV
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