Preparation method of nano-fiber poly-aniline

A nanofiber and polyaniline technology, which is applied in the field of preparing nanofiber polyaniline by electrochemical method, can solve the problems of decreased activity and poor stability of PANI, and achieves the effects of short reaction time, good reproducibility, and difficulty in agglomeration

Inactive Publication Date: 2012-01-25
TAIYUAN UNIV OF TECH
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention, by improving the existing electrochemical method, avoids the problem that the film produced during the polymerization of nanofiber PANI is converted between a low reduction state and a peroxidation state, which causes the film to undergo peroxidative hydrolysis, resulting in a decrease in activity and poor stability of PANI. , the purpose of which is to provide a new method for the preparation of nanofiber polyaniline

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of nano-fiber poly-aniline
  • Preparation method of nano-fiber poly-aniline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1, dissolving 9.3598g of aniline monomer in 250ml of aqueous solution to form aniline aqueous solution A with a molar concentration of 0.4mol / L;

[0027] Step 2, dissolving the concentrated sulfuric acid of 50.865g in the water of 500ml is configured into the sulfuric acid aqueous solution B of 1.0mol / L;

[0028] Step 3. At room temperature, take 20ml of solution A and 20ml of solution B into a beaker and stir evenly;

[0029] Step 4, using a three-electrode system (the counter electrode is a platinum sheet, and the working electrode is a 0.5cm 2 Platinum sheet, saturated calomel electrode as reference electrode). Set the unipolar pulse signal as follows: pulse voltage = 1.0V, on-time 0.4s, pulse cut-off time 0.4s, current is zero (open circuit voltage), pulse times = 375;

[0030] Step 5, take out the prepared polyaniline membrane electrode, rinse it with distilled water, and dry it at room temperature for 48 hours to obtain polyaniline nanofibers doped with sul...

Embodiment 2

[0032] (1) 9.3598g of aniline monomer is dissolved in 250ml of aqueous solution to be configured as an aniline aqueous solution A with a molar concentration of 0.4mol / L;

[0033] (2) The concentrated sulfuric acid of 50.865g is dissolved in the water of 500ml and is configured into the sulfuric acid aqueous solution B of 1mol / L;

[0034] (3) At room temperature, take 25ml of solution A and 25ml of solution B into a beaker and stir evenly;

[0035] (4) A three-electrode system is adopted (the counter electrode is a glassy carbon electrode, and the working electrode is 0.5cm 2 Platinum sheet, saturated calomel electrode as reference electrode). Set the unipolar pulse signal as: pulse voltage 0.9V, on-time 0.4s, pulse cut-off time 0.4s, current is zero (open circuit voltage), pulse times=400;

[0036] (5) Take out the prepared polyaniline membrane electrode, rinse it with distilled water, and dry it at room temperature for 48 hours to obtain polyaniline nanofibers doped with su...

Embodiment 3

[0038] (1) 11.6997g of aniline monomer is dissolved in 250ml of aqueous solution to be configured as an aniline aqueous solution A with a molar concentration of 0.5mol / L;

[0039] (2) The concentrated sulfuric acid of 50.865g is dissolved in the water of 500ml and is configured into the sulfuric acid aqueous solution B of 1mol / L;

[0040] (3) At room temperature, take 30ml of solution A and 30ml of solution B into a beaker and stir evenly;

[0041] (4) A three-electrode system is adopted (the counter electrode is platinum mesh, the working electrode is 0.5cm 2 Platinum sheet, saturated calomel electrode as reference electrode). Set the unipolar pulse signal as: pulse voltage 0.85V, on-time 0.4s, pulse cut-off time 0.3s, current zero (open circuit voltage), pulse times=500;

[0042] (5) Take out the prepared polyaniline membrane electrode, rinse it with distilled water, and dry it at room temperature for 48 hours to obtain polyaniline nanofibers doped with sulfuric acid, with...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of nano-fiber poly-aniline. In the method, an aniline monomer and inorganic acid are used as raw materials to prepare the nano-fiber poly-aniline through oxidative polymerization by using an electrochemical unipolar pulse method under a room temperature condition. The preparation method is simple to operate, needs no oxidant and gets rid of secondary pollution caused by the oxidant. A product prepared by the method has high electrochemical stability and super capacitive performance.

Description

technical field [0001] The invention relates to a method for preparing nanofiber polyaniline, in particular to a method for preparing nanofiber polyaniline by an electrochemical method. Background technique [0002] Polyaniline (PANI) has good conductivity, high stability, low monomer cost, easy synthesis, and can be incorporated into the purpose functional group in the electrochemical polymerization process, so that it occupies an important role in the conductive polymer. It has a very important position and has become a research hotspot in the field of conductive polymers. PANI nanofiber not only has the above properties of PANI, but also has excellent physical properties such as tiny pore size, narrow pore size distribution and large specific surface area. It is used as a modified electrode material in electrochemical sensors, capacitors, ion exchange, and secondary It has a very broad application prospect in secondary batteries, electrochromism, and metal anticorrosion....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C25B3/00
Inventor 郝晓刚李越赵凯王忠德张忠林刘世斌樊彩梅申迎华
Owner TAIYUAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap