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GNP-CNT printed electrode and preparation method and application thereof

A technology of GNP-CNT and printed electrodes, applied in the field of GNP-CNT printed electrodes and their preparation, can solve the problems of low sensitivity and high cost, and achieve the effects of simple preparation method, increased reaction rate, and excellent anti-interference performance.

Pending Publication Date: 2022-05-20
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention proposes a simple construction of a working electrode using carbon nanotechnology, and the printed electrode can quickly measure dopamine in the blood, which overcomes the cost of the prior art. Disadvantages such as expensive and low sensitivity

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  • GNP-CNT printed electrode and preparation method and application thereof
  • GNP-CNT printed electrode and preparation method and application thereof
  • GNP-CNT printed electrode and preparation method and application thereof

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Embodiment

[0029] 1) Prepare a stable GNP-CNT nanosuspension, the composition of which includes water weight composition percentage: 80; hyperdispersant DC-02: 5; GNP: 17.78; CNT: 2.22. Preparation process: take the amount of water from the formula, add DC-02 and stir to dissolve, then add CNT, disperse at high speed (1500r / min) for 12 minutes; sand mill for 6 hours; add GNP for sand mill in three times, with an interval of 2 hours between each time, after adding GNP Grind further for 10 hours.

[0030] 2) Prepare GNP-CNT nano-coating, above-mentioned GNP-CNT nano-suspension (solid content 20%): 84.11 grams; Waterborne acrylate resin (solid content 35%): 15.89 grams; Leveling agent: 0.2 grams; Wetting and dispersing Dosage: 0.15 g.

[0031] 3) GNP-CNT nano-coating is used to modify the printed electrode, and the working electrode of the carbon printed electrode (the reference electrode is silver / silver chloride electrode, and the counter electrode is a carbon electrode) is coated with a...

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Abstract

The invention relates to a GNP-CNT printed electrode and a preparation method and application thereof, and on the basis of a carbon printed electrode, the GNP-CNT printed electrode is obtained by modification with a water-based graphene nanosheet / carbon nanotube nano sensing coating. The working electrode is simply and conveniently constructed through the carbon nanotechnology, the CNTs are distributed among the GNP nanosheets in a monodisperse state, a three-dimensional conductive network structure morphology of the nanosheets bridged by the CNTs is formed, and a high electron transmission channel is favorably formed; the specific surface area is large, and the electrode reaction rate is effectively increased; according to the nano coating, water-based acrylic resin is adopted as a bonding substance, the hydrophilic band negative electricity characteristic is achieved, and electrostatic adsorption diffusion of dopamine on the surface of an electrode is facilitated; the DA concentration is in a range of 0.4-40 [mu] M, a good linear relationship is shown, and meanwhile, the method has excellent anti-interference performance on other nerve media such as uric acid and ascorbic acid, so that accurate, rapid, simple and convenient testing of dopamine becomes possible.

Description

technical field [0001] The invention relates to the technical field of electrochemical and nanometer analysis and detection, in particular to a GNP-CNT printed electrode and its preparation method and application. Background technique [0002] Dopamine (DA) is an important neurotransmitter in humans and mammals, playing important roles in the kidneys, blood vessels, digestive system, immune system and central nervous system. Low levels of DA are closely associated with many pathological events, such as heart failure, Parkinson's disease, and neuromuscular disorders. Therefore, there is an urgent need to develop efficient, rapid, and sensitive DA detection methods to help early diagnosis and treatment of diseases. At present, the methods for determining DA mainly include fluorescence analysis, enzyme-linked method, gas chromatography and high performance liquid chromatography. However, the above methods have problems such as cumbersome testing methods, expensive instruments...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/327B82Y15/00B82Y40/00
CPCG01N27/308G01N27/3278B82Y15/00B82Y40/00Y02E60/13
Inventor 朱爱萍朱雯
Owner YANGZHOU UNIV