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Preparation method of graphene modified glassy carbon electrode and application thereof

A technology of glassy carbon electrode and graphene, which is applied in the field of electrochemical analysis, can solve the problems of wide linear range, long time-consuming, complex analysis process of adrenaline, etc., and achieve the effect of wide linear range, simple equipment and short detection time

Inactive Publication Date: 2020-05-05
广州百兴网络科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems of complex and time-consuming analysis of adrenaline in the existing analysis method, and provides a preparation method of BiMoO6 hollow microsphere / graphene modified glassy carbon electrode, and its application in the electrochemical process of adrenaline Detection, can quickly detect adrenaline in solution, wide linear range, high sensitivity, the electrode can be used multiple times, easy to operate

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  • Preparation method of graphene modified glassy carbon electrode and application thereof
  • Preparation method of graphene modified glassy carbon electrode and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) Glassy carbon electrode pretreatment: Polish the glassy carbon electrode with 1, 0.3, 0.05 μm alumina powder to the mirror surface in turn, then ultrasonically clean it with ethanol and deionized water for 3 minutes, and use deionized water after each ultrasonic wave Rinse with water for 1 min to obtain a pretreated glassy carbon electrode;

[0029] (2) BiMoO 6 Preparation of hollow microspheres: take 5mmol of Bi(NO 3 ) 3 ·5H 2 O and 2.5 mmol Na 2 MoO 4 , ultrasonically dissolved in 20mL of ethylene glycol, then slowly add 20mL of ethanol dropwise under stirring conditions, and continue stirring for 50min to obtain a uniform mixed solution; The hydrothermal reaction was carried out under the conditions, and the reaction time was 14 hours. After the reaction was completed, it was naturally cooled to room temperature, and after filtration, the product was washed several times with ethanol and deionized water, and then placed in a vacuum drying oven and dried over...

Embodiment 2

[0033] (1) Glassy carbon electrode pretreatment: Polish the glassy carbon electrode with 1, 0.3, 0.05 μm alumina powder to the mirror surface in turn, then ultrasonically clean it with ethanol and deionized water for 3 minutes, and use deionized water after each ultrasonic wave Rinse with water for 1 min to obtain a pretreated glassy carbon electrode;

[0034] (2) BiMoO 6 Preparation of hollow microspheres: take 5mmol of Bi(NO 3 ) 3 ·5H 2 O and 2.5 mmol Na 2 MoO 4, ultrasonically dissolved in 20mL of ethylene glycol, then slowly add 20mL of ethanol dropwise under stirring conditions, and continue to stir for 50min to obtain a uniform mixed solution; The hydrothermal reaction was carried out under the conditions, and the reaction time was 18 hours. After the reaction was completed, it was naturally cooled to room temperature, and after filtration, the product was washed several times with ethanol and deionized water, and then placed in a vacuum drying oven and dried overni...

Embodiment 3

[0038] (1) Glassy carbon electrode pretreatment: Polish the glassy carbon electrode with 1, 0.3, 0.05 μm alumina powder to the mirror surface in turn, then ultrasonically clean it with ethanol and deionized water for 3 minutes, and use deionized water after each ultrasonic wave Rinse with water for 1 min to obtain a pretreated glassy carbon electrode;

[0039] (2) BiMoO 6 Preparation of hollow microspheres: take 5mmol of Bi(NO 3 ) 3 ·5H 2 O and 2.5 mmol Na 2 MoO 4 , ultrasonically dissolved in 20mL of ethylene glycol, then slowly add 20mL of ethanol dropwise under stirring conditions, and continue stirring for 50min to obtain a uniform mixed solution; The hydrothermal reaction was carried out under the conditions, and the reaction time was 16 hours. After the reaction was completed, it was naturally cooled to room temperature, and after filtration, the product was washed several times with ethanol and deionized water, and then placed in a vacuum drying oven and dried over...

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Abstract

The invention discloses a preparation method of a graphene modified glassy carbon electrode, and the method is applied to electrochemical detection of epinephrine. The preparation method comprises thefollowing steps: carrying out hydrothermal synthesis on Bi(NO3)3.5H2O and Na2MoO4 to obtain BiMoO6 hollow microspheres by adopting the detection method; and modifying the surface of the graphene modified glassy carbon electrode with the BiMoO6 hollow microspheres to obtain the BiMoO6 hollow microsphere / graphene modified glassy carbon electrode. The adrenaline is detected by adopting the BiMoO6 hollow microsphere / graphene modified electrode differential pulse voltammetry, the linear range is wide, the sensitivity is high, the electrode can be used for multiple times, and the operation is convenient.

Description

technical field [0001] The invention relates to the technical field of electrochemical analysis, in particular to a preparation method and application of a graphene-modified glassy carbon electrode. Background technique [0002] Epinephrine (Epinephrine or Adrenaline), 3,4-trihydroxy-N-methylphenethylamine. It is a hormone and neurotransmitter secreted by the adrenal medulla, and it is also a drug. Epinephrine is used to treat a variety of conditions, including anaphylaxis, cardiac arrest, and superficial bleeding. Inhaled epinephrine is sometimes used to improve the symptoms of laryngitis. In addition, epinephrine may also be considered when first-line asthma treatments have failed. Using different doses, different strengths and different routes of administration, epinephrine is the drug of choice for the treatment of anaphylactic shock reactions. [0003] In the prior art, the detection methods for adrenaline are mainly high-performance liquid chromatography and chemica...

Claims

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Application Information

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IPC IPC(8): G01N27/327G01N27/48
CPCG01N27/327G01N27/48
Inventor 孟青全静怡
Owner 广州百兴网络科技有限公司
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