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Method for preparing AgCl/PPy nanocomposite

A nanocomposite material and sol technology, applied in the field of preparing AgCl/PPy nanocomposite materials, can solve problems such as slow kinetic speed and achieve the effect of simple operation procedure

Inactive Publication Date: 2010-03-17
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the kinetic velocity between silver nitrate and pyrrole is relatively slow, even in the reaction of equal amounts of pyrrole and silver nitrate, a certain amount of silver ions will still be mixed in the product obtained, therefore, when chloride ions are added At the same time, due to the existence of PPy, AgCl / PPy composite materials are often obtained, however, there is no report in this regard

Method used

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  • Method for preparing AgCl/PPy nanocomposite
  • Method for preparing AgCl/PPy nanocomposite

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Measure 1ml of Ag / PPy blue sol, under the condition of constant shaking, then drop into concentrated hydrochloric acid solution (12.0M), until the clear and transparent blue sol becomes turbid, continue to shake for 5 minutes, then filter, in sufficient After washing, the filtered powder was dried at 50° C. for 2 hours to completely remove the solvent. All the above operations were carried out in the dark. figure 1 The UV-Vis absorption spectrum of the obtained AgCl / PPy composite nanomaterials is given in , while figure 2 The corresponding SEM images are given in .

Embodiment 2

[0019] Measure 1ml of Ag / PPy blue sol, add concentrated hydrochloric acid solution (2.0M) dropwise under constant shaking, stop adding hydrochloric acid before the clear and transparent blue sol becomes turbid, and continue shaking to make the solution well mixed. Then add ultrapure water dropwise, and the clear and transparent blue sol becomes turbid quickly, continue to shake for 5 minutes, then filter, after fully washing, dry the filtered powder at 50°C for 2 hours to completely remove the solvent. All the above operations were carried out in the dark.

Embodiment 3

[0021] Measure 1ml of Ag / PPy blue sol, add concentrated hydrochloric acid solution (6.0M) dropwise under constant shaking, stop adding hydrochloric acid before the clear and transparent blue sol becomes turbid, and continue shaking to make the solution well mixed. Subsequently, absolute ethanol was added dropwise, and the clear and transparent blue sol became turbid rapidly. Continue shaking for 5 minutes, and then filter. After fully washing, the filtered powder was dried at 50° C. for 2 hours to completely remove the solvent.

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Abstract

The invention discloses a method for preparing AgCl / PPy nanocomposite from Ag / PPy collosol, comprising the following steps: directly utilizing newly synthetic Ag / PPy collosol to react with hydrochloric acid to form AgCl / PPy educts; or adding a small amount of hydrochloric acid into newly synthetic Ag / PPy collosol; then, using the solution difference of AgCl in different solvents, and adding water,alcohol or methanol to form AgCl / PPy educts; or adding excessive hydrochloric acid in the newly synthetic Ag / PPy; and adding water, alcohol or methanol to secondarily precipitate and form AgCl / PPy nanocomposite. The method has simple process, has low instrument requirement level and is easy to realize mass production.

Description

technical field [0001] The present invention relates to a method for preparing AgCl / PPy nanocomposites using the Ag / PPy sol formed by the method in the previous patent [method for preparing silver / polypyrrole composite nanomaterials, patent number: CN 200410084246.8] as a precursor, specifically It involves directly using the newly synthesized Ag / PPy to react with hydrochloric acid solution; or by adding a small amount of hydrochloric acid to the newly synthesized Ag / PPy, and then taking advantage of the poor solubility of AgCl in different solvents to form AgCl / PPy by adding water, ethanol or methanol PPy precipitates; or by adding excess hydrochloric acid to newly synthesized Ag / PPy, AgCl / PPy composites are formed by secondary precipitation after adding water, ethanol or methanol. Background technique [0002] Silver halide is an important semiconductor with important applications in photography, electrochemistry, photoelectrochemistry, as well as catalysis and ion conduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C08K3/16
Inventor 赵崇军徐云龙钱秀珍李兵
Owner EAST CHINA UNIV OF SCI & TECH
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