Nano composite material based on phosphorus-molybdenum-containing polyoxometallate, preparation method thereof, aptamer sensor and electrode of aptamer sensor

A polyoxometalate, nanocomposite material technology, applied in the field of nanomaterials, can solve the problem of low detection limit, achieve the effect of low detection limit, improve bioaffinity, and excellent reproducibility

Active Publication Date: 2020-08-11
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a nanocomposite material based on phosphorus-containing molybdenum polyoxometalate, to solve the current nanocomposite material used in electrochemical sensors Problems with low detection limits when detecting BPA
[0009] Another object of the present invention is to provide a kind of preparation method based on the nano-composite material containing phosphorus molybdenum polyoxometalate, to solve the problem of current preparation method gained The problem of low detection limit of nanocomposites in the detection of BPA in electrochemical sensors

Method used

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  • Nano composite material based on phosphorus-molybdenum-containing polyoxometallate, preparation method thereof, aptamer sensor and electrode of aptamer sensor
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  • Nano composite material based on phosphorus-molybdenum-containing polyoxometallate, preparation method thereof, aptamer sensor and electrode of aptamer sensor

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Experimental program
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Effect test

Embodiment 1

[0084] The nanocomposite material of the present embodiment is made of carbon, molybdenum disulfide nanosheets, nano Ag 2 O particle formation, obtained by calcination of silver-doped molybdenum phosphorus polyoxometalate, after calcination, the organic carbon in the silver-doped molybdenum phosphorus polyoxometalate is transformed into cracked carbon, and the doped silver is transformed into nano-Ag 2 O particles, wherein the silver-doped molybdenum phosphate polyoxometalate is obtained by hydrothermal reaction of silver nitrate, phosphomolybdic acid and thioacetamide.

[0085] The specific steps are:

[0086] (1) Add 50mg of phosphomolybdic acid to 20mL of ultrapure water to prepare solution A, add 1g of AgNO 3 Dissolve in 10mL ultrapure water to make AgNO 3 Solution (0.1g·mL -1 ), take 100 μL of AgNO 3 The solution was added to solution A to obtain solution A', ultrasonically treated for 10 min, and set aside;

[0087] (2) Add 100mg of thioacetamide to 20mL of absolute...

Embodiment 2

[0092] The nanocomposite material of present embodiment comprises carbon, molybdenum disulfide nanosheet and nano Ag 2 O, Ag 2 S particles, obtained by calcination of silver-doped molybdenum phosphorus polyoxometalate, after calcination, the organic carbon in the silver-doped molybdenum phosphorus polyoxometalate is transformed into cracked carbon, and the doped silver is transformed into nano-Ag 2 O, Ag 2 S particles, wherein the silver-doped molybdenum phosphate polyoxometalate is obtained by hydrothermal reaction of silver nitrate, phosphomolybdic acid and thioacetamide.

[0093] The specific steps are:

[0094] (1) Add 50mg of phosphomolybdic acid to 20mL of ultrapure water to prepare solution A, add 1g of AgNO 3 Dissolve in 10mL ultrapure water to make AgNO 3 Solution (0.1g·mL -1 ), take 100 μL of AgNO 3 The solution was added to solution A to obtain solution A', ultrasonically treated for 10 min, and set aside;

[0095] (2) Add 100mg of thioacetamide to 20mL of ab...

Embodiment 3

[0100] The nanocomposite material of present embodiment comprises carbon, molybdenum disulfide nanosheet and nano Ag 2 O, Ag 2 S, Ag particles, obtained by calcining silver-doped molybdenum phosphorus polyoxometalate, after calcination, the organic carbon in the silver-doped molybdenum phosphorus polyoxometalate is transformed into cracked carbon, and the doped silver is transformed into nano-Ag 2 O, Ag 2 S, Ag particles, wherein the silver-doped molybdenum phosphate polyoxometalate is obtained by hydrothermal reaction of silver nitrate, phosphomolybdic acid and thioacetamide.

[0101] The specific steps are:

[0102] (1) Add 50mg of phosphomolybdic acid to 20mL of ultrapure water to prepare solution A, add 1g of AgNO 3 Dissolve in 10mL ultrapure water to make AgNO 3 Solution (0.1g·mL -1 ), take 100 μL of AgNO 3 The solution was added to solution A to obtain solution A', ultrasonically treated for 10 min, and set aside;

[0103] (2) Add 100mg of thioacetamide to 20mL of...

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Abstract

The invention belongs to the technical field of nano materials, and particularly relates to a nano composite material based on phosphorus-containing molybdenum polyoxometallate, a preparation method thereof, an aptamer sensor and an electrode of the aptamer sensor. The nano composite material comprises carbon, molybdenum disulfide nanosheets and silver-containing nanoparticles. The nano compositematerial is obtained by calcining silver-doped phosphorus-molybdenum polyoxometallate, and the silver-doped phosphorus-molybdenum polyoxometallate is obtained by reacting a silver source, phosphomolybdic acid and thioacetamide. The nano composite material has a relatively high specific surface area and relatively strong biological affinity; an electrochemical sensor constructed by the nano composite material has a relatively low detection limit when being used for detecting bisphenol A (BPA), and has high selectivity, good stability and reproducibility, excellent renewability and applicabilityin different environments.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a nanocomposite material based on phosphorus-containing molybdenum polyoxometalate, a preparation method thereof, an aptamer sensor and an electrode thereof. Background technique [0002] Bisphenol A (2,2-p-phenol propane, BPA) is a kind of phenolic resin with large output, which is widely used in polymer industry, and is often used as synthetic polycarbonate plastic, polysulfone resin, polyphenylene ether resin, Monomer of epoxy resin and unsaturated polyester resin etc. BPA is used in a wide range of commercial applications, such as baby bottles, beverage containers, medical equipment, food packaging, and heat-sensitive paper. In 2016, a total of 8 million tons of BPA was consumed globally, causing widespread environmental pollution. A large number of studies have shown that bisphenol A has estrogenic activity, causing reproductive and developmental toxicity;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G5/00C01G39/06C01B32/05B82Y30/00G01N27/327G01N33/53
CPCC01G5/00C01G39/06C01B32/05B82Y30/00G01N27/3278G01N33/53
Inventor 宋英攀杜淼张治红徐妙然何领好王明花贾巧娟
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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