Synthesis method of pyrrole-nitrogen-dominated nitrogen-doped graphene and pyrrole-nitrogen-dominated nitrogen-doped graphene prepared by method

Abstract

The invention relates to the technical field of synthesis of nitrogen-doped graphene, in particular to a synthesis method of pyrrole nitrogen-dominated nitrogen-doped graphene. The method comprises the following steps of: adding 5mg of graphene oxide into 10mL of dimethylformamide according to a proportion, and carrying out ultrasonic treatment for 30 minutes to obtain uniform 0.5 mg / mL graphene oxide dispersion liquid; transferring 10mL of 0.5 mg / mL graphene oxide dispersion liquid into a 25mL reaction kettle, and adding 2mL of water and 1mL of n-butylamine into the reaction kettle under violent stirring to obtain a mixed solution; putting the reaction kettle containing the mixed solution into a drying oven for heating; after completing the heating, naturally cooling the reaction kettle to room temperature, and centrifugally washing a product; and adding 4mL of a mixed solution of absolute ethyl alcohol and water into the product, and carrying out ultrasonic treatment for 15min to obtain a uniform pyrrole nitrogen-dominated nitrogen-doped graphene dispersion liquid. The invention provides a preparation method of the pyrrole-nitrogen-dominated nitrogen-doped graphene and the pyrrole-nitrogen-dominated nitrogen-doped graphene with good performance, wherein the preparation method is mild, simple and convenient.

Description

technical field [0001] The invention relates to the technical field of synthesis of nitrogen-doped graphene, in particular to a synthesis method of nitrogen-doped graphene dominated by pyrrole nitrogen and the nitrogen-doped graphene dominated by pyrrole nitrogen prepared by the method. Background technique [0002] Graphene is a two-dimensional ultra-thin carbon material with the advantages of large specific surface area, good electrical conductivity and high catalytic activity, and has been widely used in the fields of electronic components, catalysis, analysis and sensing. Doping graphene with heteroatoms to produce doped graphene can significantly improve the physical and chemical properties of graphene. Nitrogen-doped graphene is a widely used doped graphene, which has ultra-high catalytic performance and is currently the most studied. However, the current method for preparing nitrogen-doped graphene has harsh reaction conditions, generally requires high temperature an...

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Problems solved by technology

However, the current method for preparing nitrogen-doped graphene has harsh reaction conditions, generally requires high temperature and high pressure, and the reaction is carried out in a tube furnace. At the same time, ammonia gas needs to be introduced, which is high in cost and cumbersome in operation, which is not conducive to commercial production.

Moreover, the synthesized nitrogen-doped graphene is mainly based on graphite nitrogen and pyridine nitrogen doping, and the synthesis of nitrogen-doped graphene mainly based on pyrrole nitrogen doping is seldom

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