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PtNi nano-alloy electrochemical sensor for detecting dopamine

A nano-alloy and dopamine technology, applied in the field of detection applications, can solve the problems of complex sensor manufacturing process and cumbersome steps, and achieve the effects of excellent linear detection range, enhanced sensitivity, and excellent anti-interference

Active Publication Date: 2017-06-13
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the steps for detecting dopamine are cumbersome, the manufacturing process of its sensor is complicated, and the test samples need to be pretreated before testing.

Method used

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  • PtNi nano-alloy electrochemical sensor for detecting dopamine
  • PtNi nano-alloy electrochemical sensor for detecting dopamine
  • PtNi nano-alloy electrochemical sensor for detecting dopamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The synthesis method of flower-like binary PtNi nanocrystals includes the following synthesis steps: (1) Add sodium chloride and PVP to dimethylacetamide, stir at room temperature for 5 minutes, and the mass ratio of sodium chloride to PVP is 1 :2; The amount of dimethylacetamide added needs to completely dissolve sodium chloride and PVP; (2) Add platinum acetylacetonate and nickel acetylacetonate precursors, metal salt precursors to the mixed solution obtained in step (1) The concentration is 0.1mol / L; stir at room temperature for 3 to 5 minutes; (3) add PVP to the mixed solution obtained in step (2), stir at room temperature for 10 to 30 minutes, the mass ratio of sodium chloride and PVP is 1: 5; (4) Transfer the mixed solution obtained in step (3) to an autoclave to react for 6 hours, the temperature is controlled at 180°C; (5) The product obtained in step (4) is cooled and washed, and after centrifugation, two Yuan PtNi nanocrystals.

Embodiment 2

[0019] The synthesis method of flower-like binary PtNi nanocrystals includes the following synthesis steps: (1) Add sodium chloride and PVP to dimethylacetamide, stir at room temperature for 6 minutes, and the mass ratio of sodium chloride to PVP is 1 :5; The amount of dimethylacetamide added needs to completely dissolve sodium chloride and PVP; (2) Add platinum acetylacetonate and nickel acetylacetonate precursors, metal salt precursors to the mixed solution obtained in step (1) The concentration is 0.5mol / L; stir at room temperature for 3 to 5 minutes; (3) add PVP to the mixed solution obtained in step (2), stir at room temperature for 10 to 30 minutes, the mass ratio of sodium chloride and PVP is 1: 7; (4) Transfer the mixed solution obtained in step (3) to an autoclave for reaction for 10 hours, the temperature is controlled at 150 ℃; (5) the product obtained in step (4) is cooled and washed, and after centrifugation, two Yuan PtNi nanocrystals.

Embodiment 3

[0021] The method for synthesizing flower-like binary PtNi nanocrystals includes the following synthesis steps: (1) Add sodium chloride and PVP to dimethylacetamide, stir at room temperature for 8 minutes, and the mass ratio of sodium chloride to PVP is 1 :4; The amount of dimethylacetamide added needs to completely dissolve sodium chloride and PVP; (2) Add platinum acetylacetonate and nickel acetylacetonate precursors, metal salt precursors to the mixed solution obtained in step (1) The concentration is 0.3mol / L; stir at room temperature for 3 to 5 minutes; (3) add PVP to the mixed solution obtained in step (2), stir at room temperature for 10 to 30 minutes, the mass ratio of sodium chloride and PVP is 1: 8; (4) The mixed solution obtained in step (3) is transferred to an autoclave for reaction for 2-12 hours, and the temperature is controlled at 200°C; (5) the product obtained in step (4) is cooled and washed, and then centrifuged. Obtain binary PtNi nanocrystals.

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Abstract

The invention discloses a PtNi nano-alloy electrochemical sensor for detecting dopamine. The PtNi nano-alloy electrochemical sensor is characterized in that 4 microliters to 5 microliters of a binary PtNi nano-crystal ethanol solution is coated on a glassy carbon electrode to form a modified electrode PtNi / GCE; meanwhile, the modified electrode PtNi / GCE, a silver / silver chloride electrode and a platinum plate electrode form a three-electrode system; the dopamine is directly detected by utilizing an electrochemical working station. The electrochemical sensor disclosed by the invention has special sensitivity and stability on the dopamine and has relatively low detection limit, relatively wide detection range and good anti-interference property.

Description

Technical field [0001] The invention relates to the detection application of a PtNi alloy electrochemical sensor to dopamine. Background technique [0002] PtNi nanoalloys are mainly used in alcohol oxidation, nitrogen fixation, biomass fuels and liquid fuel cells, etc. However, there are very few cases of PtNi nanoalloys used in electrochemical sensors. Dopamine is a neurotransmitter secreted by the brain to help cells transmit impulses. This kind of brain endocrine is mainly responsible for the lust of the brain, and the feeling transmits information of excitement and happiness. It is also related to addiction. Generally, the steps for detecting dopamine are complicated, and the manufacturing process of the sensor is complicated, and the test sample needs to be pre-treated before the test. Summary of the invention [0003] The technical problem to be solved by the present invention is to obtain a flower-shaped binary PtNi nanocrystal, which has a novel crystal structure, a uni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327G01N27/26
CPCG01N27/26G01N27/327Y02E60/50
Inventor 袁强高戈
Owner GUIZHOU UNIV
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