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Preparation method of prussian blue cube / molybdenum disulfide nano composite material

A nanocomposite material, molybdenum disulfide technology, applied in the field of nanomaterials and biosensing, can solve problems such as easy agglomeration and poor stability, and achieve the effect of overcoming poor stability, uniform size and low equipment requirements

Active Publication Date: 2016-08-10
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned technical problems in the prior art, the present invention provides a Prussian blue cube / molybdenum disulfide nanocomposite material and a preparation method thereof, the Prussian blue cube modified molybdenum disulfide nanocomposite material overcomes the poor stability of Prussian blue , the disadvantage of easy aggregation, combined with the dual effects of Prussian blue and molybdenum disulfide, to achieve rapid, label-free and sensitive detection of antigen-antibody

Method used

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  • Preparation method of prussian blue cube / molybdenum disulfide nano composite material

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Embodiment 1

[0041] Embodiment 1 is under different volumes of polyvinylpyrrolidone, the preparation method of the Prussian blue cube / molybdenum disulfide composite material with adjustable Prussian blue cube shape is as follows:

[0042] (1) The following solutions are configured: the potassium ferricyanide aqueous solution with a concentration of 0.2mol / L, the ferric chloride aqueous solution with a concentration of 0.2mol / L, the potassium chloride aqueous solution with a concentration of 2mol / L and 5% poly Vinylpyrrolidone aqueous solution and molybdenum disulfide aqueous solution with a concentration of 0,025mmol / L;

[0043] (2) At room temperature, take 40uL of the potassium ferricyanide aqueous solution configured above and mix them with polyvinylpyrrolidone aqueous solutions with volumes of 100uL, 500uL, and 2000uL respectively. The numbers are respectively a, b, and c. Adjust the pH value with hydrochloric acid and stir at room temperature 5min; under vigorous stirring, add 200uL p...

Embodiment 2

[0049] In this embodiment, the preparation method of the Prussian blue cube / molybdenum disulfide composite material with adjustable Prussian blue cube shape is as follows:

[0050] (1) Configure the following solutions: a concentration of 0.1mol / L potassium ferricyanide aqueous solution, a concentration of 0.1mol / L ferric chloride aqueous solution, a concentration of 1mol / L potassium chloride aqueous solution and a mass fraction of 10% polyethylene An aqueous solution of pyrrolidone and a molybdenum disulfide aqueous solution with a concentration of 0.025mmol / L;

[0051] (2) At room temperature, take 60uL of the above-mentioned potassium ferricyanide aqueous solution, 100uL of polyvinylpyrrolidone aqueous solution and 200uL of potassium chloride solution into the container, and stir at room temperature for 5 minutes;

[0052] (3) Under stirring conditions, according to the molar concentration ratio of potassium ferricyanide and molybdenum disulfide to be 1:2, the above-mention...

Embodiment 3

[0056] In this embodiment, the preparation method of the Prussian blue cube / molybdenum disulfide composite material with adjustable Prussian blue cube shape is as follows:

[0057] (1) Configure the following solutions: a concentration of 0.3mol / L potassium ferricyanide aqueous solution, a concentration of 0.3mol / L ferric chloride aqueous solution, a concentration of 3mol / L potassium chloride aqueous solution and a mass fraction of 5% polyethylene An aqueous solution of pyrrolidone and a molybdenum disulfide aqueous solution with a concentration of 0.1 mmol / L;

[0058] (2) At room temperature, take 40uL of the above-mentioned potassium ferricyanide aqueous solution, 3000uL of polyvinylpyrrolidone aqueous solution and 100uL of potassium chloride solution into the container, and stir at room temperature for 10 minutes;

[0059] (3) Under stirring conditions, according to the molar concentration ratio of potassium ferricyanide and molybdenum disulfide is 4:1, the above molybdenum...

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Abstract

The invention belongs to the fields of nano material and biosensing. The invention provides a prussian blue cube / molybdenum disulfide nano composite material and preparation method and application thereof. The nano composite material uses polyvinylpyrrolidone as a surfactant and reducing agent and uses halogen as a morphology control agent. A molybdenum disulfide solution, a potassium ferricyanide solution and molybdenum disulfide solution and a ferric trichloride solution are mixed, subjected to a wet chemical reduction method, and purified to obtain the prussian blue cube / molybdenum disulfide nano composite material. The composite material can be used to construct a marker-free immune sensor. The composite material has good dispersion and biocompatibility and is prepared by wet chemical one-step reduction method. The composite material has a fast and efficient catalytic performance, and great potential applications in electrocatalysis and electrochemical sensor of the electrochemical field; the composite material can be used for constructing marker-free electrochemical immunosensor to achieve high sensitivity and specificity detection of tumor marker.

Description

technical field [0001] The invention belongs to the field of nanomaterials and biosensing, and relates to the preparation and application of a molybdenum disulfide nanomaterial, in particular to a preparation method of a Prussian blue cube / molybdenum disulfide composite material and its application in biosensors. Background technique [0002] Since the discovery of Prussian blue by a German named Dissbach in the 18th century, Prussian blue has attracted more and more attention. Prussian blue, also known as potassium ferrocyanide, Hualan, etc., is an ancient blue dye and the earliest discovered coordination compound. With properties such as low toxicity, magnetism, and reversible redox, it can be widely used in fields such as biofuel cells, sensors, and medical treatment. However, the application of Prussian blue to biosensors has attracted much attention, initially for the detection of small molecules (such as H 2 o 2 , ethanol, glucose, etc.), this is mainly because Prus...

Claims

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Application Information

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IPC IPC(8): G01N33/53G01N27/327
CPCG01N27/327G01N33/53
Inventor 樊春海苏邵韩小彦汪联辉晁洁邹敏曹文芳张池刘巍卢在伟
Owner NANJING UNIV OF POSTS & TELECOMM
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