Method for synthesizing controllable template of nano polyaniline tube

Abstract

This invention discloses a method for controllable templated synthesis of polyaniline nanotubes. The method comprises: utilizing highly oxidative metal oxide nanowires or nanotubes, such as cryptomelane-type MnO2 nanofibers or beta-MnO2 nanotubes as the template, mixing with aniline monomer in an acidic solution in an ice water bath under stirring, reacting for 4-8 h to obtain a dark green solid product, filtering, washing with deionized water and ethanol to remove residual ions and oligomers on the surface, an drying to obtain polyaniline nanotubes. The ratio of MnO2 template to aniline monomer is 40-50 mg / 0.08-0.1 mL. Aniline monomer is adequately stirrer in the acidic solution, and then rapidly transferred into an aqueous solution dispersed with the MnO2 template, where aniline monomer is polymerized in an ice water bath under stirring.

Description

Technical field: [0001] The invention relates to a controllable synthesis method of a novel conjugated polymer nanotube, which mainly utilizes oxidizing metal oxides (MnO 2 etc.) Nanowires or nanotube templates polymerize aniline monomers in an acidic environment to generate polyaniline. Background technique: [0002] The nanotube structure of conjugated polymers has great potential in the application of devices, especially in transistors, sensors and secondary batteries. As an important conductive conjugated polymer, polyaniline has a stable The advantages of physical and chemical properties, controllable redox state and high conductivity are used in solar cells, electromagnetic wave shielding materials, antistatic materials, electrode materials, high-capacity capacitor materials, thermoelectric materials, triodes, sensor materials and gas Separation of materials and many other aspects. See A.G.MacDiarmid, Chem.Int.Ed.2001, 40, 2581-2590; Wan Meixiang, Li Junchao, Li Suzh...

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Problems solved by technology

[0004] Chinese patent publication 1446839 uses manganese dioxide as an oxidant chemical oxidation method to synthesize conductive polyaniline, and the aniline monomer is added to the acid water suspension containing manganese dioxide for oxidation reaction. The invention is simple and easy to synthesize conductive polyaniline, and the product contains two The residual amount of manganese oxide is very low, but it does not involve the synthesis of one-dimensional nanomaterials such as polyaniline nanotubes and nanowires [13] Synthesis of conductive polyaniline by chemical oxidation method using manganese dioxide as oxidant

Chinese Patent Publication No. 1667021 uses different concentrations of inorganic acid doping in a hydrothermal environment to control the microscopic morphology of polyaniline, but it also does not involve the synthesis of controllable polyaniline nanotubes with templates that can dissolve spontaneously

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