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Preparation method and application of au/pils/ppynts composite material

A composite material, adrenaline technology, applied in organic compound/hydride/coordination complex catalysts, analytical materials, electrochemical variables of materials, etc., can solve the technical requirements of technicians with higher operating steps, expensive equipment, time-consuming, etc. problems, to achieve the effect of improving the electron transport rate, convenient state modulation, and simple preparation process

Active Publication Date: 2018-08-14
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods have good accuracy, the instruments and equipment are expensive, the requirements for technicians are high, and the operation steps are complex and time-consuming

Method used

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  • Preparation method and application of au/pils/ppynts composite material
  • Preparation method and application of au/pils/ppynts composite material
  • Preparation method and application of au/pils/ppynts composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The preparation of embodiment 1 Au / PILs / PPyNTs composite material

[0047] (1) Preparation method

[0048] Synthetic route such as Figure 8 shown.

[0049] 1. Synthesis of ionic liquid modified polypyrrole nanotubes (ILs / PPyNTs)

[0050] 1.1) Synthesis of PPyNTs

[0051] Polypyrrole nanotubes were synthesized by self-degradation template method. The methyl orange (MO) that takes 0.05g is added in the conical flask that contains 30mL water, after fully dissolving, then add 0.249g iron trichloride, after stirring for 5 minutes, add 0.113g pyrrole monomer again, in After stirring at room temperature for 24 hours, wash with distilled water and ethanol until neutral, and dry in vacuum at 50°C for 24 hours to obtain PPyNTs.

[0052] 1.2) PPyNTs-(CH 2 ) 4 -Synthesis of Br

[0053] Weigh 0.031g of PPyNTs and 0.055g of potassium hydroxide into a single-necked round-bottomed flask, then add 0.156g of 1,4-dibromobutane, disperse in 25mL of DMF, ultrasonically disperse for...

Embodiment 2

[0066] Example 2 Application of Au / PILs / PPyNTs composites to the electrocatalytic properties of epinephrine (EP)

[0067] (1) The method is as follows:

[0068] 1) Take 1 mg of dried Au / PILs / PPyNTs nanocomposite, add it to 1 mL of ethanol, and ultrasonically disperse for 20 minutes to obtain a uniformly dispersed black suspension.

[0069] 2) Al for glassy carbon electrode 2 o 3 After polishing, they were ultrasonically cleaned in water and ethanol respectively, and after drying in the air, pipette 3 μL of the above dispersed black suspension of Au / PILs / PPyNTs onto a clean glassy carbon electrode ( GCE) surface, placed in the air, you can get a glassy carbon electrode (Au / PILs / PPyNTs / GCE) modified with Au / PILs / PPyNTs, dry it for later use.

[0070] At the same time, PILs / PPyNTs nanotube-modified glassy carbon electrodes (PILs / PPyNTs / GCE) were prepared by the same method for comparison.

[0071] 3) Put Au / PILs / PPyNTs / GCE in a phosphate buffer solution containing epinephrine...

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Abstract

The invention relates to a preparation method and application of an Au / PILs (Polymeric Ionic Liquids) / PPyNTs (Polypyrrole Natotubes) composite material. The adopted technical scheme is that the preparation method comprises the following steps of firstly, synthesizing ionic liquid-modified polypyrrole nanotubes (ILs / PPyNTs); secondly, by taking 1-vinyl-3-ethylimidazole bromide salt as a monomer and taking 2,2-azobisisobutyronitrile as an initiator, initiating a polymerization reaction on the surfaces of the polypyrrole natotubes to obtain polymeric ionic liquid-modified polypyrrole nanotubes (PILs / PPyNTs); finally, uniformly mixing the PILs / PPyNT with an HAuCl4 solution; by taking sodium borohydride as a reducing agent, performing in-situ reduction of AuCl<4-> on the surfaces of the PILs / PPyNT to obtain Au / PILs / PPyNTs. According to the preparation method disclosed by the invention, the polymeric ionic liquids are used as connectors for combining conductive polymer polypyrrole with gold nanoparticles to obtain the Au / PILs / PPyNTs composite material which has better detectability for epinephrine.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to a preparation method and application of a gold nanoparticle / polymer ionic liquid / polypyrrole nanotube (Au / PILs / PPyNTs) composite material. Background technique [0002] Polypyrrole nanotubes (PPyNTs) have attracted attention due to their good electrical conductivity at room temperature, long-term environmental stability, redox performance, and ion exchange properties. However, polypyrrole is generally insoluble in water and most organic solvents and has poor dispersion, which may be due to the strong intramolecular and intermolecular interactions and the formation of crosslinked structures. Therefore, polypyrrole nanotube composite materials are developed to overcome the insolubility of polypyrrole nanotube composite materials, and improve the dispersion and electron transport rate of polypyrrole nanotube composite materials in water or solvents, so that polypyrrole ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06C08F283/00C08F226/06G01N27/327G01N27/48
Inventor 茆卉张海凤姜威张国林宋溪明
Owner LIAONING UNIVERSITY
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