Platinum and polyaniline compounded three-dimensional nanofiber functional structure glucose sensor with stainless steel needle as base and preparation method of sensor

A technology of glucose sensor and composite nanofibers, which is applied in the field of polymer functional materials, can solve the problems affecting the advantages of three-dimensional fiber structure, affecting the catalytic ability of enzymes, insufficiencies, etc., and achieve the effects of stable physical and chemical properties, simple preparation method and convenient operation.

Inactive Publication Date: 2014-08-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, when platinum is used as a surface catalyst, it is discretely distributed on the surface of polyaniline fibers in the form of nanoparticles, and its amount is insufficient, which affects the overall catalytic ability of enzymes; Surface, so that the three-dimensional fiber structure of polyaniline is covered and affects the advantages of its three-dimensional fiber structure

Method used

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  • Platinum and polyaniline compounded three-dimensional nanofiber functional structure glucose sensor with stainless steel needle as base and preparation method of sensor
  • Platinum and polyaniline compounded three-dimensional nanofiber functional structure glucose sensor with stainless steel needle as base and preparation method of sensor
  • Platinum and polyaniline compounded three-dimensional nanofiber functional structure glucose sensor with stainless steel needle as base and preparation method of sensor

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Effect test

Embodiment 1

[0033] Embodiment 1: The structure of the platinum and polyaniline composite nanofiber three-dimensional structure glucose sensor described in the present invention is as follows figure 1 As shown: it consists of four parts: stainless steel needle 1, ordered nano-gold layer 2, platinum and polyaniline composite fiber film 3, and biological protective film 4. The ordered nano-gold layer 2 is decorated on the outer layer of stainless steel needle 1, platinum and polyaniline The polyaniline composite fiber film 3 is modified on the outer layer of the ordered nano-gold layer 2, the biological protective film 4 is modified on the outer layer of the platinum and polyaniline composite fiber film 3, the above-mentioned stainless steel needle 1, the ordered nano-gold layer 2, the platinum The polyaniline composite fiber film 3 and the bioprotective film 4 are sequentially stepped.

[0034] The preparation process is as follows:

[0035] (1) Take the aniline monomer solution, add nitri...

Embodiment 2

[0047] Embodiment 2: The preparation process of the platinum and polyaniline composite nanofiber three-dimensional structure glucose sensor described in the present invention is as follows:

[0048] (1) Take the aniline monomer solution, add sulfuric acid as a hydrolysis catalyst and stir at low temperature, stir until the solution is clarified again, and obtain the doped aniline monomer solution;

[0049] (2) Using stainless steel needles as the substrate, performing nano-groove modification, and then modifying the ordered nano-gold by electroless plating on the substrate to obtain an ordered nano-gold electrode;

[0050] (3) The doped aniline monomer solution obtained in step (1) is electrochemically deposited on the ordered gold electrode substrate, and the constant voltage method is used to adjust the electrochemical voltage to -3V, and the intrinsic solidification of the solidification is obtained at the positive electrode. state polyaniline;

[0051] (4) electrochemical...

Embodiment 3

[0056] Embodiment 3: The preparation process of the platinum and polyaniline composite nanofiber three-dimensional structure glucose sensor described in the present invention is as follows:

[0057] (1) Take the aniline monomer solution, add nitric acid and sulfuric acid as the hydrolysis catalyst and stir at low temperature, stir until the solution is clarified again, and obtain the doped aniline monomer solution;

[0058] (2) adopt stainless steel needle as substrate, carry out the modification of nano-sized groove, adopt the method for electroless electroplating to modify ordered nano-gold to this substrate again, make ordered nano-gold electrode;

[0059] (3) The doped aniline monomer solution prepared in step (1) is electrochemically deposited on the ordered gold electrode substrate, and the constant voltage method is used to adjust the electrochemical voltage to -5V, and the intrinsic solidification of the solidification is obtained at the positive electrode. state polya...

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Abstract

The invention discloses a platinum and polyaniline compounded three-dimensional nanofiber functional structure glucose sensor with a stainless steel needle as a base and a preparation method of the sensor. The preparation method of the sensor comprises the steps: (1), preparing an ordered gold electrode; (2), preparing a platinum and polyaniline compounded three-dimensional nanofiber functional structure film by adopting an electrochemical deposition method; (3), adsorbing and crosslinking glucose oxidase; and (4), coating a biocompatibility film. The platinum and polyaniline compounded three-dimensional nanofiber functional structure glucose sensor with the stainless steel needle as the base, disclosed by the invention, is good in physical and chemical stability, relatively wide in detection range and relatively high in sensitivity, and can be used for detecting the concentration of sugar in blood of a biological body.

Description

technical field [0001] The invention relates to the field of polymer functional materials and the field of electrochemical sensors, in particular to a platinum and polyaniline composite nanofiber three-dimensional functional structure glucose sensor based on stainless steel needles and a preparation method. Background technique [0002] Conductive polymers are formed by chemically or electrochemically doping polymers with π bonds. Due to their unique conductive properties, reversible doping process, controllable physical and chemical properties, and excellent processability, they can be widely used It is used in electrochromic materials, electromagnetic shielding, etc. Among them, conductive polyaniline, as one of the conductive polymers, has been widely used in glucose biosensors due to its good physical and chemical properties and simple preparation. [0003] Platinum metal is widely used as a surface catalyst on conductive polyaniline glucose biosensors due to its good c...

Claims

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Application Information

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IPC IPC(8): G01N27/26
Inventor陈裕泉王沧陈大竞陈玮管文军潘敏
OwnerZHEJIANG UNIV