Method for preparing polyaniline nanometer wires by using ultrasonic radiation

A technology of ultrasonic radiation and polyaniline, applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of cumbersome reaction process, high cost, unfavorable mass production, etc.

Inactive Publication Date: 2010-10-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when polyaniline nanorods are prepared by interfacial polymerization or template method, the reaction process is cumbersome and the cost is high, which is not conducive to large-scale production.

Method used

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  • Method for preparing polyaniline nanometer wires by using ultrasonic radiation
  • Method for preparing polyaniline nanometer wires by using ultrasonic radiation
  • Method for preparing polyaniline nanometer wires by using ultrasonic radiation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 200ml of 1mol / l hydrochloric acid (HCl) into a 250ml three-neck flask, stir for 30min, then take 1ml of aniline (ANI), and dropwise add it to the reaction solution at a rate of 0.02ml / min. After continuing to stir for 1 hour, 50 ml of a solution containing 2.5 g of ammonium persulfate was taken and added dropwise to the reaction solution at a rate of 1 ml / min. The reaction was carried out at 20° C. for 8 hours under continuous stirring. During the whole process of the reaction, it is accompanied by ultrasonic irradiation (300W). After the reaction, the HCl-doped PANI nanorods were obtained after suction filtration, washing with dilute hydrochloric acid, absolute ethanol, and deionized water, and vacuum drying at 45°C.

Embodiment 2

[0020] Add 200ml of 1mol / l hydrochloric acid (HCl) into a 250ml three-neck flask, stir for 30min, then take 1ml of aniline (ANI), and dropwise add it into the reaction solution at a rate of 0.05ml / min. After continuing to stir for 1 hour, 50 ml of a solution containing 2.5 g of ammonium persulfate was added dropwise to the reaction solution at a rate of 3 ml / min. The reaction was carried out at 24°C for 6 hours under continuous stirring. During the whole process of the reaction, it is accompanied by ultrasonic irradiation (300W). After the reaction, the HCl-doped PANI nanorods were obtained after suction filtration, washing with dilute hydrochloric acid, absolute ethanol, and deionized water, and vacuum drying at 45°C.

Embodiment 3

[0022] Add 200ml of 1mol / l hydrochloric acid (HCl) into a 250ml three-neck flask, stir for 30min, then take 1ml of aniline (ANI), and dropwise add it into the reaction solution at a rate of 0.05ml / min. After continuing to stir for 1 hour, 50 ml of a solution containing 2.5 g of ammonium persulfate was added dropwise to the reaction solution at a rate of 3 ml / min. The reaction was carried out at 16° C. for 10 hours under continuous stirring. During the whole process of the reaction, it is accompanied by ultrasonic irradiation (300W). After the reaction, the HCl-doped PANI nanorods were obtained after suction filtration, washing with dilute hydrochloric acid, absolute ethanol, and deionized water, and vacuum drying at 45°C.

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Abstract

The invention discloses a method for preparing polyaniline nanometer wires by using ultrasonic radiation, which comprises the following steps: firstly, dripping aniline into hydrochloric acid; then, transferring ammonium persulfate into the hydrochloric acid; carrying out continuous stirring in the reaction process with the accompanied ultrasonic radiation; and carrying out reaction for 6 to 10 hours at 16 to 24 DEG C. Compared with those of a mechanical stirring method, the conjugation degree, the doping degree and the protonation degree of the HCl doping PANI synthesized by the ultrasonic radiation method are high.

Description

technical field [0001] The invention relates to a method for preparing nanometer materials, more specifically, to a method for preparing polyaniline nanowires by ultrasonic radiation. Background technique [0002] Sonochemistry refers to a discipline that uses ultrasonic waves to accelerate chemical reactions and improve chemical yields. The use of ultrasound can accelerate and control chemical reactions, increase reaction yields, change reaction processes, improve reaction conditions, and initiate new chemical reactions. Sonochemistry is primarily derived from acoustic cavitation, the use of cavities in liquids that form, oscillate, grow, shrink, and collapse to induce physical and chemical changes. The process of liquid acoustic cavitation is the process of concentrating the energy of the sound field and releasing it rapidly. When the cavitation bubble collapses, in a very short time and in a very small space of the cavitation bubble, a high temperature of more than 5000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02B82B3/00
Inventor 姚琲刘利涛李轩
Owner TIANJIN UNIV
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