Preparation and application of Prussian blue/N-doped carbon nanometer composite material

A nano-composite material and composite material technology, applied in the preparation of Prussian blue/N-doped carbon nano-composite materials, and the application field of enzyme-free uric acid sensors, can solve the problem that the activity is easily affected by temperature and pH, and the sensor cost is high , limited enzyme storage period and other issues, to achieve long storage time, good catalytic effect, and good stability

Active Publication Date: 2015-12-09
南京明茂英华生物科技有限公司
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Problems solved by technology

[0003] The traditional uric acid sensor is mainly an enzyme sensor based on uricase, but the enzyme itself has some disadvantages: (1) the activity of the enzyme, the shelf life of the enzyme is limited, and its activity is easily affected by temperature and pH; (2) the enzyme In order to fix the enzyme on the electrode, it is necessary to

Method used

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  • Preparation and application of Prussian blue/N-doped carbon nanometer composite material

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Embodiment 1

[0031] Embodiment 1: Preparation of Prussian blue / N-doped carbon nanotube nanocomposite material

[0032] Acidification treatment of carbon nanotubes: (1) prepare 100ml of a mixed solution of concentrated sulfuric acid and concentrated nitric acid, the volume ratio of concentrated sulfuric acid and concentrated nitric acid is 3:1; (2) take 1g of multi-walled carbon nanotubes and add them to the above mixed solution, Ultrasound for 30 minutes to fully mix the carbon nanotubes with the mixed acid, and reflux for 6 hours in a water bath at 70°C after mixing; (3) Centrifuge the treated carbon nanotubes with distilled water, filter and wash them, and dry them in a vacuum oven at 80°C for 24 hours , the acidified carbon nanotubes can be obtained;

[0033] Preparation of N-doped carbon nanotubes: (1) Prepare 50ml of 1M perchloric acid solution, take 20mg of acidified carbon nanotubes and add them into the prepared perchloric acid solution for ultrasonic dispersion for 30min, then sti...

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Abstract

The invention discloses preparation and application of a Prussian blue/N-doped carbon nanometer composite material to the aspect of enzyme-free uric acid sensors. A preparation method of the Prussian blue/N-doped carbon nanometer composite material comprises the following three steps: acidizing treatment of a carbon nanometer composite material; preparation of a N-doped carbon nanometer composite material; preparation of the Prussian blue/N-doped carbon nanometer composite material. The prepared Prussian blue/N-doped carbon nanometer composite material is utilized for preparation of an enzyme-free uric acid sensor, has a very good three-dimensional space structure and a very good effect in catalyzing uric acid, and can be utilized for directly detecting uric acid under the circumstance that uricase is absent; compared with a common uricase sensor, the enzyme-free uric acid sensor prepared by utilizing the Prussian blue/N-doped carbon nanometer composite material is simpler, more economical and portable, long in storage period, and high in stability and anti-interference capability.

Description

technical field [0001] The invention belongs to the fields of energy material preparation and electrochemistry, and in particular relates to the preparation of a Prussian blue / N-doped carbon nanocomposite material and its application in an enzyme-free uric acid sensor. Background technique [0002] Uric acid (UA) is the main product of purine metabolism in the human body. Excessive or low levels of uric acid in the human body are not conducive to health. For example, excessive levels of uric acid in serum can lead to hyperuricemia; it can also damage kidney function and cause uric acid excretion disorders. Relevant data show that the increase of blood uric acid is related to hypertension, diabetes, coronary heart disease and other diseases. As a reducing substance, uric acid participates in some important redox reactions in the body. At present, with the development of society, due to many factors such as work stress and overnutrition, the probability of people suffering f...

Claims

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Application Information

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IPC IPC(8): G01N27/30G01N27/26
Inventor 李长明史转转
Owner 南京明茂英华生物科技有限公司
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