Preparation method of porous carbon based on polyaniline nanofiber

A nanofiber and polyaniline technology, applied in the field of nanomaterials, can solve the problems of reducing the active site of the material, the activity of the unused material, the agglomeration of carbon fibers, etc., and achieve the effect of increasing the ion conductivity, increasing the active site, and increasing the specific surface area.

Pending Publication Date: 2019-02-05
YANGZHOU SHENGYANG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some traditional preparation methods only open pores on the surface of the material without utilizing the activity inside the material, and some carbon fibers are prone to agglomeration during the carbonization process, thereby reducing the active sites of the material

Method used

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  • Preparation method of porous carbon based on polyaniline nanofiber
  • Preparation method of porous carbon based on polyaniline nanofiber
  • Preparation method of porous carbon based on polyaniline nanofiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) SiO 2 / polyaniline (SiO 2 / PANI) fiber preparation

[0040] Add 0.921 mL of phytic acid and 2 mL of deionized water to the vial, then add 0.458 mL of aniline monomer and 0.05 mL of SiO 2 Ultrasound to mix evenly, weigh 0.286 g of ammonium persulfate and dissolve in 1 mL of deionized water, and cool the above two solutions to 0-5 o After mixing the reaction at C, keep the temperature unchanged for 12 h. Get SiO 2 / PANI product, the product was washed with deionized water to remove impurities, and dispersed in 9 mL of deionized water for later use.

[0041] (2) SiO 2 / Modification of PANI

[0042] Take the above 3 mL SiO 2 / PANI solution, add 12 mL of deionized water and 0.3 mL of ammonia water for ultrasonic dispersion, centrifuge to discard the supernatant, and add to the wet SiO 2 Add 20 mL of deionized water to PANI and stir for 12 h. The supernatant was discarded by centrifugation, and washed twice with water.

[0043] (3) SiO 2 / PANI / SiO 2 material s...

Embodiment 2

[0050] (1) SiO 2 / polyaniline (SiO 2 / PANI) fiber preparation

[0051] Add 0.921 mL of phytic acid and 2 mL of deionized water to the vial, then add 0.458 mL of aniline monomer and 0.1 mL of SiO 2 Ultrasound to mix evenly, weigh 0.286 g of ammonium persulfate and dissolve in 1 mL of deionized water, and cool the above two solutions to 0-5 o After mixing the reaction at C, keep the temperature unchanged for 12 h. Get SiO 2 / PANI product, the product was washed with deionized water for impurities, and dispersed in 9 mL of deionized water for later use.

[0052] (2) SiO 2 / Modification of PANI

[0053] Same as the method of Example 1.

[0054] (3) SiO 2 / PANI / SiO 2 material synthesis

[0055] Same as the method of Example 1.

[0056] (4) Synthesis of porous carbonized polyaniline nanofibers and template SiO 2 remove

[0057] Same as the method of Example 1.

[0058] Such as figure 2 The TEM morphology characteristic map shown can be seen: the obtained porous carbo...

Embodiment 3

[0060] (1) SiO 2 / polyaniline (SiO 2 / PANI) fiber preparation

[0061] Add 0.921 mL of phytic acid and 2 mL of deionized water to the vial, then add 0.458 mL of aniline monomer and 0.2 mL of SiO 2 Ultrasound to mix evenly, weigh 0.286 g of ammonium persulfate and dissolve in 1 mL of deionized water, and cool the above two solutions to 0-5 o After mixing the reaction at C, keep the temperature unchanged for 12 h. Get SiO 2 / PANI product, the product was washed with deionized water for impurities, and dispersed in 9 mL of deionized water for later use.

[0062] (2) SiO 2 / Modification of PANI

[0063] Same as the method of Example 1.

[0064] (3) SiO 2 / PANI / SiO 2 material synthesis

[0065] Same as the method of Example 1.

[0066] (4) Synthesis of porous carbonized polyaniline nanofibers and template SiO 2 remove

[0067] Same as the method of Example 1.

[0068] Such as image 3 The TEM morphology characteristic map shown can be seen: the obtained porous carbon...

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Abstract

The invention discloses a preparation method of porous carbon based on polyaniline nanofiber. The preparation method comprises the following steps: 1, preparing polyaniline (SiO2 / PANI) nanofiber; 2, modifying the polyaniline (SiO2 / PANI) nanofiber; 3, synthesizing a modified polyaniline (SiO2 / PANI) nanofiber material; 4, synthesizing porous carbon of the polyaniline nanofiber; 5, removing SiO2 spheres. By adopting the method, impurities are removed by repeated cleaning in the preparation process, so that a high-purity product is obtained. Moreover, the preparation process is convenient for accurate control.

Description

technical field [0001] The invention relates to a method for preparing porous carbon based on polyaniline nanofibers, and belongs to the technical field of nanomaterials. Background technique [0002] Porous carbon materials have been widely used as energy storage materials such as supercapacitors due to their stable properties, large specific surface area, rich pore structure, and outstanding ion accessibility, etc., which have attracted the attention of researchers. However, the presence of fewer functional groups on the inner and outer hydrophobic surfaces of porous carbons degrades their performance due to carbonization or activation at high temperatures. Studies have shown that the hydrophobic properties of porous carbon can be improved by doping heteroatoms such as nitrogen in the carbon matrix. Nitrogen-containing groups are usually basic, and enhance the hydrophilic interaction on the surface of carbon materials through dipole-dipole, hydrogen bonding, and covalent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15C01B32/05
CPCC01B32/05C01B32/15
Inventor 黎华章邹伟平韩杰李亚男范磊
Owner YANGZHOU SHENGYANG ELECTRONICS
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