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Porous carbon fiber loading transition metal oxide, biosensor and preparing method of porous carbon fiber loading transition metal oxide

A porous carbon fiber and biosensor technology, applied in the field of biosensors, can solve the problems of cumbersome and complicated pore-forming process, unrecoverable pore-forming agent, and difficult control of pore structure, so as to improve the response signal of electrocatalytic reaction and electrochemical sensing Effects of performance, ability to facilitate charge transport, and specific selectivity

Active Publication Date: 2020-07-17
SHANDONG ANRAN NANOMETRE IND DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation methods of porous carbon fibers reported in the literature still have the following problems: the pore structure is not easy to control, the pore-forming process is cumbersome and complicated, the pore-forming agent cannot be recycled, the cost is high, and it is difficult to realize industrial production.

Method used

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  • Porous carbon fiber loading transition metal oxide, biosensor and preparing method of porous carbon fiber loading transition metal oxide
  • Porous carbon fiber loading transition metal oxide, biosensor and preparing method of porous carbon fiber loading transition metal oxide
  • Porous carbon fiber loading transition metal oxide, biosensor and preparing method of porous carbon fiber loading transition metal oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Preparation of precursor fiber

[0043] Add 1.0 g of polyacrylonitrile-b-polystyrene block copolymer (PAN-b-PS), 0.1 g of cobalt acetate, and 0.3 g of copper acetate into a mixed solution of 10 mL of dimethylformamide and chloroform (3 : 1), heated and stirred in a water bath at 50° C. for 10 h to obtain a fully dispersed spinning precursor solution.

[0044] Under the conditions of spinning voltage of 15KV, spinning distance of 15cm, and injection rate of 0.5mL / h, the spinning solution of polyacrylonitrile-b-polystyrene block copolymer (PAN-b-PS) was used as raw material for electrostatic Spinning to obtain the precursor PAN-b-PS nanofibers.

[0045] (2) Preoxidation and carbonization of the precursor PAN-b-PS nanofibers

[0046] The precursor PAN-b-PS nanofibers were placed in a tube furnace, raised to 200°C at a rate of 2°C / min, kept for 2h, then raised to 800°C at a rate of 5°C / min, kept for 2h, and then cooled To room temperature, the transition metal oxide ...

Embodiment 2

[0054] (1) Preparation of precursor fiber

[0055] Add 0.9 g of polystyrene-b-poly-2-vinylpyridine block copolymer (PS-b-PVP), 0.4 g of cobalt nitrate, and 0.1 g of nickel nitrate into a mixed solution of 10 mL of ethanol and chloroform (1: 3), stirring at room temperature for 24 hours to obtain a fully dispersed spinning precursor solution.

[0056] Under the conditions of spinning voltage of 17KV, spinning distance of 15cm, and injection rate of 1mL / h, polystyrene-b-poly2-vinylpyridine block copolymer (PS-b-PVP) spinning solution was used as raw material Electrospinning was carried out to obtain precursor PS-b-PVP nanofibers.

[0057] (2) Preoxidation and carbonization of the precursor PS-b-PVP nanofibers

[0058] Place PS-b-PVP nanofibers in a tube furnace, raise it to 200°C at a rate of 3°C / min, keep it for 1.5h, then raise it to 600°C at a rate of 3°C / min, keep it for 3h, and then cool to At room temperature, a PS-b-PVP-based carbon fiber (NiCo 2 o 4 -PS-b-PVP CNFs)....

Embodiment 3

[0066] (1) Preparation of precursor fibers

[0067] Add 1.5 g of polyvinylpyrrolidone-b-polymethyl methacrylate block copolymer (PVP-b-PMMA), 0.5 g of ferric nitrate, and 0.2 g of zinc acetate into a mixed solution of 10 mL of ethanol and dichloromethane (1 : 1), heated and stirred at 50°C for 24h to obtain a fully dispersed spinning precursor solution.

[0068] Under the conditions of spinning voltage 16KV, spinning distance 18cm, and injection rate of 1.5mL / h, polyvinylpyrrolidone-b-polymethylmethacrylate block copolymer (PVP-b-PMMA) spinning solution Electrospinning is carried out as a raw material to obtain a precursor PVP-b-PMMA nanofiber.

[0069] (2) Preoxidation and carbonization of the precursor PVP-b-PMMA nanofibers

[0070] PVP-b-PMMA nanofibers were placed in a tube furnace, raised to 300°C at a rate of 5°C / min, kept for 3h, then raised to 900°C at a rate of 5°C / min, kept for 2h, and then cooled to room temperature , to obtain PVP-b-PMMA-based carbon fibers load...

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Abstract

The invention discloses a porous carbon fiber loading transition metal oxide, a biosensor and a preparing method of the porous carbon fiber loading transition metal oxide and belongs to the technicalfield of biosensors. The porous carbon fiber loading the transition metal oxide is prepared in the manner that high-molecular polymers, transition metal salt and a solvent are mixed to obtain a spinning precursor solution, and then carbonization treatment is conducted after electrostatic spinning. The biosensor is prepared in the manner that boric acid base electric conducting polymers are fixed with the porous carbon fiber as the base body. The porous carbon fiber loading the transition metal oxide is provided with a uniform mesoporous structure, holes communicate with one another, subsequenttreatment is not needed, the preparing technology is simple, and repeatability is high. The boric acid base electric conducting polymers are fixedly loaded on the surface of the porous carbon fiber loading the transition metal oxide and can serve as the transmission medium of electric charges, meanwhile, the electric conduction performance and the biological recognition performance of the boric acid base electric conducting polymers can promote the charge transmission capability and the specificity selectivity of an electro-catalysis reaction, and response signals of the electro-catalysis reaction are improved.

Description

technical field [0001] The invention belongs to the technical field of biosensors, and in particular relates to a porous carbon fiber loaded with transition metal oxides, a biosensor prepared by immobilizing a boric acid-based conductive polymer with the porous carbon fiber as a matrix, and a preparation method thereof. Background technique [0002] Biosensor is a kind of system that immobilizes biologically active materials such as enzymes and proteins and converts their responses to certain types of substances into electrical signals and analyzes them. , specificity, simplicity and other advantages. At the same time, biological materials are greatly affected by the environment and are easily inactivated or desorbed. Therefore, the preparation of sensing materials that can specifically recognize the biomolecules to be tested through appropriate preparation processes has become a research hotspot. [0003] Among many carbon materials, carbon fiber material is a one-dimensio...

Claims

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Application Information

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IPC IPC(8): D01F9/20D01F1/10G01N27/327B01J31/06B01J31/28B01J35/10B01J35/06
CPCD01F9/20D01F1/10G01N27/3278B01J31/06B01J31/28B01J35/33B01J35/58B01J35/60B01J35/647Y02E60/50
Inventor 丁永玲孙康宁张明臣侯新江张京楼盛婷孙华东
Owner SHANDONG ANRAN NANOMETRE IND DEV CO LTD
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