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Electrode material for ascorbic acid sensor, biosensor, manufacturing method and application of biosensor

A biosensor and ascorbic acid technology, applied in the field of biosensors, can solve the problems of high experimental conditions, high operating technology, and low detection sensitivity, and achieve excellent electrical properties, high chemical stability, and strong electron transfer capabilities.

Pending Publication Date: 2020-07-17
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So the mensuration of ascorbic acid is an important index of medical detection health or not always, the mensuration of ascorbic acid generally adopts titration analysis method, spectrophotometry, chromatographic analysis method and fluorescence analysis method, and requires experimental conditions in these methods of prior art And the operation technology is higher, and the detection sensitivity is lower

Method used

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  • Electrode material for ascorbic acid sensor, biosensor, manufacturing method and application of biosensor
  • Electrode material for ascorbic acid sensor, biosensor, manufacturing method and application of biosensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of preparation method for detecting the electrode material of ascorbic acid, it is characterized in that, comprises the steps:

[0034] (1) Preparation of Ni@NiO composites:

[0035] Cut the nickel foam into 1×5cm 2Soak nickel foam in acetone and sonicate for 6 hours, then immerse foam nickel in 0.1mol / L HCl solution and sonicate for 3 hours, then wash with water for 2 hours and sonicate, and dry at room temperature Until the quality does not change any more, then put the nickel foam and deionized water into the reaction kettle, immerse the nickel foam in the deionized water, first react in the reaction kettle at 100°C for 12h, and then react at 140°C for 12h, After cooling to room temperature, take it out and dry it, and finally sinter it at 300°C for 7 hours, and dry it in vacuum to prepare Ni@NiO composite material;

[0036] (2) Preparation of electrode material for detecting ascorbic acid:

[0037] Disperse 0.04g of carbon nanotubes in concentrated nitric ...

Embodiment 2

[0039] (1) Preparation of Ni@NiO composites:

[0040] Cut the nickel foam into 2×4cm 2 Soak nickel foam in acetone and sonicate for 7 hours, then wash in deionized water and sonicate for 1.5 hours, then immerse foam nickel in 0.1mol / L HCl solution for 4 hours, and finally wash with water for 1.5 hours and sonicate , dry at room temperature until the quality does not change, then put the nickel foam and deionized water into the reactor, soak the nickel foam in the deionized water, react in the reactor at 110°C for 12h, and then at 135°C React at low temperature for 12 hours, take it out and dry after cooling to room temperature, and finally sinter at 350°C for 6 hours, and dry in vacuum to prepare Ni@NiO composite material;

[0041] (2) Preparation of electrode material for detecting ascorbic acid:

[0042] Disperse 0.05g of carbon nanotubes in concentrated nitric acid with a volume fraction of 45%, and reflux at 110°C for 11 hours, cool to room temperature, wash with deioniz...

Embodiment 3

[0044] (1) Preparation of Ni@NiO composites:

[0045] Cut the nickel foam into 3×3cm 2 Soak nickel foam in acetone and sonicate for 8 hours, then wash in deionized water and sonicate for 1 hour, then immerse foam nickel in 0.1mol / L HCl solution for 5 hours, and finally wash with water for 1 hour and sonicate, at room temperature Dry under high temperature until the quality does not change anymore, then put nickel foam and deionized water into the reactor, immerse the nickel foam in deionized water, react in the reactor at 120°C for 12 hours, and then react at 130°C After cooling to room temperature for 12 hours, take it out and dry it, and finally sinter it at 400°C for 5 hours and dry it in vacuum to prepare Ni@NiO composite material;

[0046] (2) Preparation of electrode material for detecting ascorbic acid:

[0047] Disperse 0.06g of carbon nanotubes in concentrated nitric acid with a volume fraction of 45%, and reflux at 120°C for 10h, cool to room temperature, wash with...

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Abstract

The invention relates to the technical field of biosensors and especially relates to an electrode material for an ascorbic acid sensor, a biosensor, a manufacturing method and an application of the biosensor. The manufacturing method comprises the following steps: carrying out surface oxidation on foamed nickel subjected to surface deoiling treatment through a hydrothermal oxidation method; preparing and acquiring a Ni@NiO composite material; and modifying the surface of the Ni@NiO composite material of an oxidized carbon nanotube through an electronic injection method to obtain a Ni@NiO composite material / carbon nanotube, and loading ascorbic acid oxidase on the surface of the Ni@NiO composite material / carbon nanotube to prepare the electrode material for detecting an ascorbic acid. In addition, the electrode material, a reference electrode and a counter electrode form the biosensor, the ascorbic acid can be detected by adopting an electrochemical method, and the biosensor has high sensitivity and a low detection limit on ascorbic acid detection, and is short in response time and high in selectivity.

Description

technical field [0001] The invention relates to the technical field of biosensors, in particular to an electrode material for an ascorbic acid sensor, a biosensor, a preparation method and application thereof. Background technique [0002] A sensor (English name: transducer / sensor) is a detection device that can sense the measured information and convert the sensed information into an electrical signal or other required form of information output according to a certain rule to meet the information requirements. transmission, processing, storage, display, recording and control requirements. [0003] Ascorbic acid (vitamin C) is ingested through diet, absorbed by the small intestine and widely distributed to organs and tissues in the body. In terms of biochemistry, it participates in the synthesis of collagen, L-carnitine, adrenal cortex hormones, and catecholamines , the decomposition of lipid peroxide, the decomposition of active oxygen, etc., play an important role in the ...

Claims

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Application Information

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IPC IPC(8): G01N27/30G01N27/416
CPCG01N27/308G01N27/4163
Inventor 李勇张玉新周鱼跃薛伟周应继张瑞珠
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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