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A kind of cerium nitrate (Ⅲ) doped polyaniline/silver nanocomposite material and preparation method thereof

A composite material, the technology of cerium nitrate, which is applied in the field of cerium (Ⅲ) doped polyaniline/silver nanocomposite material and its preparation, can solve the problems of poor thermal stability and limited increase in electrical conductivity, and achieve good thermal stability, Effects of preventing aggregation and improving corrosion resistance

Active Publication Date: 2015-11-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a kind of nitric acid with good heat resistance, high electrical conductivity and good corrosion resistance, aiming at the disadvantages of poor thermal stability, limited improvement of electrical conductivity and limited application of the doped polyaniline material in the prior art. Cerium(Ⅲ)-doped polyaniline / silver nanocomposites

Method used

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  • A kind of cerium nitrate (Ⅲ) doped polyaniline/silver nanocomposite material and preparation method thereof
  • A kind of cerium nitrate (Ⅲ) doped polyaniline/silver nanocomposite material and preparation method thereof
  • A kind of cerium nitrate (Ⅲ) doped polyaniline/silver nanocomposite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Nanocomposites prepared when the molar ratio of aniline: silver nitrate: cerium(Ⅲ) nitrate is 3:1:0.5

[0029] Dissolve 0.44g of sodium hypophosphite in 10mL of distilled water and add it to 100mL of 1% microemulsion of sodium dodecylbenzenesulfonate, then add 10mL of 0.5M / L nitric acid and stir for 15 minutes. Afterwards, the temperature of the reaction system was raised to 40° C., and 50 mL of silver nitrate solution containing 1.42 g was added dropwise, and the dropping rate was controlled at 15-20 drops / min. The reaction time is 90 minutes.

[0030] On the basis of the silver nanoparticle microemulsion, 2.50g of aniline and 1.80g of cerium nitrate (Ⅲ) were successively added, and ultrasonically dispersed for 10 minutes. Afterwards, under electric stirring conditions, 30 mL of an aqueous solution containing 5.71 g of ammonium persulfate was added dropwise to the reaction system to initiate aniline polymerization. The dropping rate is 15-20 drops / min, the reaction t...

Embodiment 2

[0032] Nanocomposites prepared when the molar ratio of aniline: silver nitrate: cerium(Ⅲ) nitrate is 3:1:1

[0033] Dissolve 0.44g of sodium hypophosphite in 10mL of distilled water and add it to 100mL of 1% microemulsion of sodium dodecylbenzenesulfonate, then add 10mL of 0.5M / L nitric acid and stir for 15 minutes. Afterwards, the temperature of the reaction system was raised to 40° C., and 50 mL of silver nitrate solution containing 1.42 g was added dropwise, and the dropping rate was controlled at 15-20 drops / min. The reaction time is 90 minutes.

[0034] On the basis of the silver nanoparticle microemulsion, 2.50g of aniline and 3.60g of cerium (Ⅲ) nitrate were successively added, and ultrasonically dispersed for 10 minutes. Afterwards, under electric stirring conditions, 30 mL of an aqueous solution containing 5.71 g of ammonium persulfate was added dropwise to the reaction system to initiate aniline polymerization. The dropping rate is 15-20 drops / min, the reaction tempe...

Embodiment 3

[0037] Nanocomposites prepared when the molar ratio of aniline: silver nitrate: cerium(Ⅲ) nitrate is 3:1:3

[0038] Dissolve 0.44g of sodium hypophosphite in 10mL of distilled water and add it to 100mL of 1% microemulsion of sodium dodecylbenzenesulfonate, then add 10mL of 0.5M / L nitric acid and stir for 15 minutes. Afterwards, the temperature of the reaction system was raised to 40° C., and 50 mL of silver nitrate solution containing 1.42 g was added dropwise, and the dropping rate was controlled at 15-20 drops / min. The reaction time is 90 minutes.

[0039] On the basis of the silver nanoparticle microemulsion, 2.50g of aniline and 10.80g of cerium nitrate (Ⅲ) were successively added, and ultrasonically dispersed for 10 minutes. Afterwards, under electric stirring conditions, 30 mL of an aqueous solution containing 5.71 g of ammonium persulfate was added dropwise to the reaction system to initiate aniline polymerization. The dropping rate is 15-20 drops / min, the reaction te...

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Abstract

The invention discloses a cerous nitrate (III)-doped polyaniline / silver nanometer composite material and a preparation method thereof. The composite material is a ternary organic combination body which is formed by absorbing cerous nitrate (III) and nanometer silver on a polyaniline chain through conjugate coordination. The preparation method of the composite material comprises the following steps of preparing the nanometer silver by a reduction method; and then, compounding the nanometer silver and the cerous nitrate (III) through polymerization of aniline to obtain the composite material. The preparation method is simple, low in cost and high in yield, and can be used for industrial production; heat stability, conductivity and corrosion resistance of the prepared composite material are greatly improved in comparison with those of a polyaniline / silver binary composite material, so that application potential is extensive.

Description

technical field [0001] The invention relates to a polyaniline / silver nanocomposite material doped with cerium (III) nitrate and a preparation method thereof, belonging to the field of conductive polymer-based composite materials. Background technique [0002] Polyaniline is one of the more popular conductive polymers in current research and application. The simple synthesis, good environmental stability, and good electrochemical performance make it have broad application prospects in the fields of electrode materials, energy storage, electromagnetic shielding, sensors, and corrosion resistance. In the current research on nanocomposites, the study of polyaniline / metal nanocomposites has also attracted much attention. Such as polyaniline / palladium, polyaniline / gold, polyaniline / copper, polyaniline / platinum and other nanomaterials are also extensively studied. As one of them, polyaniline / silver nanocomposite material not only combines the original characteristics of polyanili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08K3/08C08K3/24C08L79/02B22F9/24
Inventor 李芝华李彦博
Owner CENT SOUTH UNIV