Method for preparing aza graphene and nanometer metal graphene through solid phase cracking method

Abstract

The invention relates to a method for preparing aza graphene and nanometer metal graphene by using a solid phase cracking technology, wherein a phthalocyanine compound, a phthalocyanine polymer and a derivative thereof are adopted as starting raw materials, and cracking is performed at a temperature of more than 700 DEG C under an atmosphere of high purity nitrogen gas, argon gas or argon / hydrogen mixed gas to obtain the nitrogen-containing graphene and nanometer metal graphene materials. The method is characterized in that 1, the method is simple, and the aza graphene and nanometer metal graphene materials can be obtained through one-time solid phase cracking; 2, the graphene materials can be obtained through cracking in a non-hydrogen environment; 3, with adjustment on the cracking temperature, the gas flow rate and other experiment parameters, the size, the thickness and the quality of the graphene materials can be effectively controlled; and 4, the graphene materials with the coil behavior can be obtained under the catalyst effect. The prepared graphene materials can be applied in the fields of single molecule detection technologies, field-effect transistors and integrated circuits thereof, transparent conductive electrodes, conductive inks, field emission sources and vacuum electron devices thereof, supercapacitors, biological devices and the like.

Description

technical field [0001] The invention adopts a solid-phase cracking technology to prepare azagraphene and nano-metal graphene materials, and belongs to the field of high-tech material preparation. Background technique [0002] In 2004, Geim et al. used adhesive tape to repeatedly peel off graphene on natural graphite[1]. Graphene has caused an unprecedented sensation in the scientific community because of its unique single-layer flake hexagonal honeycomb lattice structure. Its unique excellent performance and The huge potential application value has attracted widespread attention all over the world. In terms of chemical bonding, the carbon atoms constituting the two-dimensional structure of graphene are represented by sp 2 This method of hybridization allows carbon atoms to form stable C-C bonds with three adjacent carbon atoms through σ bonds, endowing graphene with extremely high mechanical properties [2]. At the same time, the π electrons provided by a large number of ca...

AI Technical Summary

Problems solved by technology

At present, graphene nitrogen doping methods mainly include hydrothermal synthesis method, chemical synthesis method, CVD method, plasma sputtering, etc. (such as invention patents CN102887498, CN102745678, CN101708837, etc.), and the synthesis efficiency and quality of these methods are generally low

Incorporating metal nanoparticles into graphene is a common practice for electrochemical device modification and electrode modification. At present, the main composite methods include redox method, electrochemical reduction method, etc. (such as CN102174702A, CN102136306A, etc.), and the main methods of these methods are The problem is that there is a large amount of chemical waste liquid, and the nanoparticles are easy to aggregate

[0006] Therefore, there is an urgent need to develop a method that uses new raw materials, is simple and easy to implement, has no special requirements for equipment, has low cost, high efficiency, zero pollution, zero emissions, is easy to promote and use, and can solve the problems existing in the existing graphene preparation technology. High cost, low efficiency, poor quality, etc., and the method of producing azagraphene and nano-metal graphene from raw materials at one time without the need to generate intermediate product graphene

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