Synthetic method of divalent cobalt molybdenum salt-doped polyaniline

Abstract

The invention discloses a synthetic method of divalent cobalt molybdenum salt-doped polyaniline. The method comprises the following steps: 1) mixing a primary doping agent, ananiline monomer and acetone, wherein the mol ratio of sulfuric acid to aniline is 4-8:1; uniformly stirring a mixture for 10-30 min at the temperature of 30-40 DEG C, and adding an oxidizing agent ammonium persulfate aqueous solution, wherein the mol ratio of ammonium persulfate to the aniline monomer is 0.2-1.0:1; and uniformly stirring the materials for 3-5 h to obtain a primary doped product solution; 2) then adding a secondary doped divalent cobalt molybdenum salt solution in the primary doping agent, wherein the mol ratio of the divalent cobalt molybdenum salt solution to the aniline monomer is 8-15:1, continuously reacting the materials, stirring the materials for 4-5 h at normal temperature, and heating the materials to the temperature of 50-60 DEG C to obtain a secondary doped product; and 3) finally, filtering a reaction solution, washing with distilled water, using ether for washing and filtering until a filtrate presents neutrality, drying a filter cake, and crushing the filter cake to obtain the divalent cobalt molybdenum salt-doped polyaniline dark green conductive powder. The synthetic method has the advantage that the product purity is high.

Description

technical field [0001] The present invention relates to a kind of preparation method of polyaniline, more specifically, it relates to a kind of synthesis method of divalent cobalt molybdenum salt doped polyaniline. Background technique [0002] Since the discovery of conductive polymers in the 1970s, after nearly half a century of development, they have a huge market demand in the fields of sensors, optoelectronic materials, metal anticorrosion, antistatic coatings, etc. due to their excellent electrochemical properties. Among them, polyaniline, a conductive polymer, is considered to be one of the most promising conductive polymer materials due to its good redox and environmental stability, high electrical conductivity, excellent physical and chemical properties, cheap raw materials, and simple synthesis methods. one. [0003] Intrinsic polyaniline (completely oxidized benzene form or fully reduced quinone form) is not conductive, and conductive polyaniline can only be obta...

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Problems solved by technology

[0004] Aniline monomer can be oxidized and polymerized into polyaniline relatively quickly in the presence of an oxidizing agent, but pure polyaniline has poor conductivity without doping, and can only show better conductivity after being doped with a suitable dopant sex

Chinese patent 200710060136.1 reports a method for preparing polyaniline conductive composite film by in-situ polymerization. In this method, citric acid, camphorsulfonic acid or divalent cobalt molybdenum salt is added to the sodium dodecylbenzenecyclonate solution as a dopant solution. Conductive polyaniline composite film, but the conductivity of the product is low, only 7.21×10-4S / cm~0.286S / cm

Chinese patent 200510096471.8 reports a method for preparing conductive polyaniline nanofibers. In this method, ultrasonic waves are used to oxidize the prepared intrinsic polyaniline fibers to obtain conductive polyaniline fibers with a diameter of 20-100 nm and a length of 500-5000 nm. , but the operation of the process is more complicated and the implementation conditions are higher