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Polyaniline nanofiber/manganese dioxide nanorod composite material and preparation method thereof

A nanofiber, manganese dioxide technology, applied in the field of chemistry, can solve rare problems and achieve the effects of high product reproducibility, high stability and saving experimental reagents

Inactive Publication Date: 2012-04-11
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis of one-dimensional conductive polymer / manganese dioxide composite nanomaterials is relatively rare. One-dimensional conductive polyaniline nanofibers with high environmental stability, good conductivity, and low price are used as active templates to construct one-dimensional polyaniline / manganese dioxide composite nanomaterials. Manganese composite nanomaterials have not been reported in the literature

Method used

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  • Polyaniline nanofiber/manganese dioxide nanorod composite material and preparation method thereof
  • Polyaniline nanofiber/manganese dioxide nanorod composite material and preparation method thereof
  • Polyaniline nanofiber/manganese dioxide nanorod composite material and preparation method thereof

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Embodiment 1

[0030] Embodiment 1: Preparation of polyaniline nanofiber / manganese dioxide nanorod composite material

[0031] (1) Raw material preparation: Aniline was distilled under reduced pressure before use, and stored in a 4°C refrigerator for later use. Potassium permanganate was prepared into a 0.10 mol / L aqueous solution with deionized water before use. Other chemical reagents were of analytical grade, and water was deionized water.

[0032] (2) Preparation of polyaniline nanofibers: Dissolve 0.30 ml aniline in 10 ml 1.0 mol / L HCl aqueous solution, and add 10 ml ammonium persulfate aqueous solution (0.18 g ammonium persulfate, 1.0 mol / L HCl aqueous solution) to it at one time , fully stirred at 25 °C for half a minute, and then reacted under static conditions for 6 hours, and the obtained polyaniline nanofibers had a particle size of 40-60 nm. Centrifuge the reaction system containing the precipitate to obtain a precipitate, then centrifuge and wash it with deionized water for mo...

Embodiment 2

[0035] Embodiment 2: Preparation of polyaniline nanofiber / manganese dioxide nanorod composite material

[0036] (1) Raw material preparation: Aniline was distilled under reduced pressure before use, and stored in a 4°C refrigerator for later use. Potassium permanganate was prepared into a 0.10 mol / L aqueous solution with deionized water before use. Other chemical reagents were of analytical grade, and water was deionized water.

[0037] (2) Preparation of polyaniline nanofibers: Dissolve 0.30 ml aniline in 10 ml 1.0 mol / L HCl aqueous solution, and add 10 ml ammonium persulfate aqueous solution (0.18 g ammonium persulfate, 1.0 mol / L HCl aqueous solution) to it at one time , fully stirred at 25°C for half a minute, and then reacted under static conditions for 6 hours, and the obtained polyaniline nanofibers had a particle size of 40-60 nm. The reaction system containing the precipitate was centrifuged to obtain a precipitate, and then centrifuged and washed with deionized wate...

Embodiment 3

[0040] Embodiment 3; Preparation of polyaniline nanofiber / manganese dioxide nanorod composite material

[0041] (1) Raw material preparation: Aniline was distilled under reduced pressure before use, and stored in a 4°C refrigerator for later use. Potassium permanganate was prepared into a 0.01 mol / L aqueous solution with deionized water before use. Other chemical reagents were of analytical grade, and water was deionized water.

[0042](2) Preparation of polyaniline nanofibers: Dissolve 0.30 ml aniline in 10 ml 1.0 mol / L HCl aqueous solution, and add 10 ml ammonium persulfate aqueous solution (0.18 g ammonium persulfate, 1.0 mol / L HCl aqueous solution) to it at one time , fully stirred at 25 °C for half a minute, and then reacted under static conditions for 6 hours, and the obtained polyaniline nanofibers had a particle size of 40-60 nm. The reaction system containing the precipitate was centrifuged to obtain a precipitate, and then centrifuged and washed with deionized wate...

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Abstract

The invention provides a polyaniline nanofiber / manganese dioxide nanorod composite material and a preparation method thereof. In the polyaniline nanofiber / manganese dioxide nanorod composite material, the particle diameter of polyaniline nanofibers is 40-60 nanometers, and the particle diameter of manganese dioxide nanorods is 3.0-5.0 nanometers; and the manganese dioxide nanorods are uniformly loaded on the surfaces of the polyaniline nanofibers. The preparation method comprises the following steps: uniformly dispersing the polyaniline nanofibers in water; thoroughly mixing, and then adding a potassium permanganate water solution in one step; and thoroughly mixing at 25 DEG C for 10 minutes while keeping the polyaniline concentration at 0.4 g / L and controlling the potassium permanganate concentration at 3.6-21.5 mmol / L, thus obtaining the polyaniline nanofiber / manganese dioxide nanorod composite material. The composite material has the advantages of simple and convenient preparation process, high stability and good reproducibility.

Description

technical field [0001] The invention relates to the chemical field, in particular to a polyaniline nanofiber / manganese dioxide nanorod composite material and a preparation method thereof. Background technique [0002] As a functional material, manganese oxide has shown many special physical and chemical properties in catalysis, electrochemistry, adsorption and magnetism, so it is often used as molecular sieves, catalytic materials, battery materials and new magnetic materials. Since Lee and Goodenough et al. discovered the quasi-capacitive properties of manganese dioxide in 1999, manganese dioxide has been used as an active electrode material in batteries due to its excellent electrochemical activity, low price, simple and easy synthesis route, and low toxicity. The application of chemical capacitors has attracted widespread attention. However, the specific capacitance and energetic properties of MnO2 are ultimately limited by the high charge transfer resistance caused by p...

Claims

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Application Information

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IPC IPC(8): C08L79/02C08K3/22
Inventor 韩杰郭荣李利亚
Owner YANGZHOU UNIV
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