Method for preparing polypyrrole/gold nano composite

A composite material and gold nanotechnology, which is applied in the preparation field of polypyrrole/gold nanocomposite materials, can solve the problems of cumbersome preparation process, cumbersome template preparation and removal, and high equipment requirements, so as to achieve simple preparation process, improve processability, Effect of improving electrical conductivity

Inactive Publication Date: 2011-10-19
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the document "Jingjing Xu, Jianchen Hu. Etc. Decorating Polypyrrole Nanotubes with Au Nanoparticles by an In Situ Reduction Process. Macromol. Rapid Commun., 2009, 30, 936-940", nano-gold modified polypyrrole nanotubes The synthesis of the method adopts the template method, and the preparation and removal of the template are relatively cumbersome
[0005] The electrochemical preparation of polypyrrole / gold introduced in the document "T.Rapecki, M.Donten.Etc. Electrodeposition of polypyrrole-Au nanoparticles composite from one solution containing gold salt and monomer. Electrochemistry Communications, 2010, 12, 624-627" Nanocomposite particles, instead of chemical oxidation, the preparation process is cumbersome and requires high equipment

Method used

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  • Method for preparing polypyrrole/gold nano composite
  • Method for preparing polypyrrole/gold nano composite
  • Method for preparing polypyrrole/gold nano composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of polypyrrole / gold nanocomposite material and preparation method thereof

[0028] Proceed as follows:

[0029] ①At room temperature, stir 100g of deionized water, 1.5g of surfactant SDS, and 0.5g of co-surfactant n-amyl alcohol to form a uniform and transparent microemulsion system;

[0030] ②Add 0.01g of pyrrole monomer into the system and stir to obtain a homogeneous system;

[0031] ③Add 0.5g mass fraction of 36% concentrated hydrochloric acid to the system to adjust the pH value of the system;

[0032] ④ Slowly add substances to the system with a concentration of 24.281×10 -3 mol / L of chloroauric acid solution 3g, continue to react for 4h.

[0033] ⑤ After the reaction, the obtained system was demulsified with ethanol, centrifuged, washed repeatedly with deionized water and ethanol, and dried to obtain the polypyrrole / gold nanocomposite material.

Embodiment 2

[0035] A kind of polypyrrole / gold nanocomposite material and preparation method thereof

[0036] Proceed as follows:

[0037] ①At room temperature, stir 100g of deionized water, 1.5g of surfactant PVP, and 0.5g of co-surfactant n-propanol to form a uniform and transparent microemulsion system;

[0038] ②Add 0.05g of pyrrole monomer into the system and stir to obtain a homogeneous system;

[0039] ③Add 1.5g mass fraction of 36% concentrated hydrochloric acid to the system to adjust the pH value of the system;

[0040] ④ Slowly add substances to the system with a concentration of 24.281×10 -3 mol / L of chloroauric acid solution 7g, continue to react for 3h.

[0041] ⑤ After the reaction, the obtained system was demulsified with ethanol, centrifuged, washed repeatedly with deionized water and ethanol, and dried to obtain the polypyrrole / gold nanocomposite material.

Embodiment 3

[0043] A kind of polypyrrole / gold nanocomposite material and preparation method thereof

[0044] Proceed as follows:

[0045] ①At room temperature, stir 100g of deionized water, 3.0g of surfactant PVP, and 1.5g of co-surfactant n-propanol to form a uniform and transparent microemulsion system;

[0046] ②Add 0.03g of pyrrole monomer into the system and stir to obtain a homogeneous system;

[0047] ③Add 1g mass fraction of 36% concentrated hydrochloric acid to the system to adjust the pH value of the system;

[0048] ④ Slowly add substances to the system with a concentration of 24.281×10 -3 mol / L of chloroauric acid solution 5g, continue to react for 5h.

[0049] ⑤ After the reaction, the obtained system was demulsified with ethanol, centrifuged, washed repeatedly with deionized water and ethanol, and dried to obtain the polypyrrole / gold nanocomposite material.

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Abstract

The invention relates to a method for preparing a polypyrrole / gold nano composite, belonging to the technical field of material, comprising the following steps: uniformly stirring deionized water, surfactant and cosurfactant at room temperature, adding pyrrole in the system, and adding certain concentrated hydrochloric acid to adjust the PH value to 0.8-1.3; adding auric chloride acid solution slowly to react for 3-6h; after the reaction, carrying out demulsification, centrifugation and drying to obtain polypyrrole / gold nano composite particles. The polypyrrole / gold nano composite particles prepared by the invention are in a good dispersion and regular tetrahedron morphology, have good conduct electricity, good electrical conductivity, and are capable of being used in the fields of electrode material, luminescent material, electromagnetic shielding material, anticorrosion paint and the like of secondary battery. Simultaneously, the preparation method has the advantages of simple process, low reaction environmental requirement, and easy to control experiment parameters.

Description

technical field [0001] The invention relates to a polypyrrole composite material, in particular to a preparation method of a polypyrrole / gold nanometer composite material. Background technique [0002] Polypyrrole is a conductive polymer with a π-conjugated structure. In recent years, due to its simple synthesis, good oxidation resistance, higher conductivity, easy film formation, softness and other advantages compared with other conductive polymers, it has attracted more and more attention. At present, polypyrrole has been used in the production of luminescent materials, electromagnetic shielding materials, secondary batteries, anti-corrosion coatings and other fields. However, its electrical conductivity is still far behind that of a good conductor. Combining polypyrrole with metal particles can greatly increase its electrical conductivity. [0003] Gold nanoparticles have special surface effects, quantum size effects, and macroscopic quantum tunneling effects, and have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C08G73/06C08K3/08
Inventor 石元昌孙立波刘锋楚林疋李波
Owner SHANDONG UNIV
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