Dandelion-shaped gold nanoparticles@polyaniline nanocomposite prepared by one-pot method and its preparation method and application

A technology of nanocomposite materials and gold nanoparticles, applied in the direction of material electrochemical variables, etc., can solve the problems of inability to meet large-scale industrial production, complicated operation, cumbersome operation, etc., and achieve suitable for large-scale production, simple operation, and uniform dispersion Effect

Active Publication Date: 2020-09-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Chinese patent with publication number CN104119527A discloses a gold-polyaniline nanocomposite particle and its preparation method. The structure of the composite is that the surface of the gold nanoparticle is covered with a polyaniline layer. The separation process takes a long time, and the resulting golf ball-shaped composite nanoparticles have a size of 10-20nm
The Chinese patent with the publication number CN105461920A discloses a method and application of a one-pot synthesis of sea urchin-shaped gold nanoparticles and spherical polyaniline. This preparation method requires additional addition of stabilizers and oxidants, and the operation is complicated. With the difference in the separation process, Sea urchin-shaped gold nanoparticles and spherical polyaniline were obtained respectively
The disadvantage of the above method is that the operation is cumbersome and cannot meet the needs of large-scale industrial production.

Method used

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  • Dandelion-shaped gold nanoparticles@polyaniline nanocomposite prepared by one-pot method and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A method for preparing dandelion-shaped gold nanoparticles@polyaniline nanocomposites in one pot, specifically including the following steps:

[0032] Under normal temperature conditions, 0.18mL of aniline monomer was uniformly dispersed in 18mL of 0.5mol / L hydrochloric acid solution, and under continuous stirring, 1.8mL of 6mmol / L chloroauric acid solution was added dropwise, and after 12 hours of reaction, a blue The product, the product was centrifuged at 8000 rpm for 15 minutes, washed with absolute ethanol, deionized water, and N-methylpyrrolidone in turn until the filtrate was colorless, and dried in vacuum at 60°C for 12 hours to obtain dandelion-shaped gold nanoparticles@poly Aniline nanocomposites.

[0033] Structural performance test: XRD (solid powder X-ray diffraction analysis) technology was used to characterize gold nanoparticles @ polyaniline nanocomposites (see figure 1 ), there is a broad peak between 2θ position 10-30° in the material, which is the ch...

Embodiment 2

[0037] A method for preparing dandelion-shaped gold nanoparticles@polyaniline nanocomposites by one-pot method, which specifically includes the following steps:

[0038] Under normal temperature conditions, 0.18mL of aniline monomer was uniformly dispersed in 9mL of 1.0 mol / L hydrochloric acid solution, and under continuous stirring conditions, 3.6mL of 12mmol / L chloroauric acid solution was added dropwise, and after 6 hours of reaction, a blue The product, the product is centrifuged at 10,000 rpm for 10 minutes, washed with absolute ethanol, water, and N-methylpyrrolidone in turn until the filtrate is colorless, and then vacuum-dried at 80°C for 8 hours to obtain dandelion-shaped gold nanoparticles@polyaniline nano composite material.

[0039] Structural performance test: XRD (solid powder X-ray diffraction analysis) technology is used to characterize the gold nanoparticles@polyaniline nanocomposite material obtained in this example, and the XRD results are consistent with fig...

Embodiment 3

[0044] A method for preparing dandelion-shaped gold nanoparticles@polyaniline nanocomposites by one-pot method, which specifically includes the following steps:

[0045] Under normal temperature conditions, 0.18mL of aniline monomer was uniformly dispersed in 12mL of 0.75 mol / L hydrochloric acid solution, and under continuous stirring conditions, 2.7mL of 9mmol / L chloroauric acid solution was added dropwise, and after 9 hours of reaction, a blue The product, the product was centrifuged at 9000 rpm for 12.5 minutes, washed with absolute ethanol, water, and N-methylpyrrolidone in sequence until the filtrate was colorless, and then vacuum-dried at 70°C for 10 hours to obtain dandelion-shaped gold nanoparticles@polyaniline nanocomposites.

[0046] Structural performance test: XRD (solid powder X-ray diffraction analysis) technology is used to characterize the gold nanoparticles@polyaniline nanocomposite material obtained in this example, and the XRD results are consistent with fi...

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Abstract

The invention discloses a dandelion-like golden granule @ polyaniline nano composite material prepared by using a one-pot method and a preparation method and application of the dandelion-like golden granule @ polyaniline nano composite material. The method comprises the following steps: (1) uniformly dispersing a phenylamine monomer into an inorganic acid so as to obtain a phenylamine monomer dispersion; (b) putting a chloroauric acid solution as a gold source into the phenylamine monomer dispersion under a continuous stirring condition; and (c) performing a continuous stirring reaction till alight blue product is produced, further centrifuging, washing, and drying, thereby obtaining the dandelion-like golden granule @ polyaniline nano composite material. A conductive precious metal nanoparticle @ high-molecular polymer which is uniform in morphology and stable in structure and property is prepared by using the one-pot method, the method is simple and feasible, low in cost, gentle incondition and applicable to large-scale production, and as an electrode modification material, the obtained composite material is relatively good in conductivity and electrochemical activity, can be applied to catalytic detection on heavy metal pollutants in copper, and has the advantages of being high in sensitivity, good in recyclability, and the like.

Description

technical field [0001] The invention relates to the field of preparation of conductive polymer / metal nanoparticle composite materials, in particular to a dandelion-shaped gold nanoparticle@polyaniline nanocomposite material prepared by a one-pot method and its preparation method and application. Background technique [0002] Polyaniline (Polyaniline) has a p-electron conjugated structure, which is a kind of conductive polymer material. It has special electrical and optical properties, and can have electrical conductivity and electrochemical properties after doping. Polyaniline has been widely studied and applied because of its structural characteristics such as easy availability of raw materials, simple synthesis process, and good chemical and environmental stability. [0003] Noble metal nanoparticles have unique optical and electrical properties, making them widely used in the fields of catalysis, medicine, biology and sensing. In recent years, the combination of noble me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08K3/08C08L79/02G01N27/48G01N27/30
CPCC08G73/0266C08K3/08C08K2003/0831C08K2201/011C08L79/02G01N27/30G01N27/48
Inventor 叶建山鲁志伟戴琬琳刘柏辰
Owner SOUTH CHINA UNIV OF TECH
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