Dispersion method of nano carbon material

Abstract

The invention discloses a dispersion method of a nano carbon material, which comprises the following steps: respectively preparing tannic acid and trivalent metal salt into solutions, mixing the two solutions, adding water to prepare a TA / trivalent metal ion complex solution, adding the nano carbon material into ultrapure water to prepare a mixed solution; carrying out ice-water bath ultrasonic treatment on the mixed solution, and adding a TA / trivalent metal ion complex to obtain a stable suspension; the tannic acid metal complex used in the invention is a non-toxic and stable buffer system, and has strong suspension ability to the nanocarbon material, the prepared nanocarbon material suspension is stable, and the use condition of the method is wide, and the method can be popularized and used in the field of nanomaterials.

Description

technical field [0001] The invention relates to a method for realizing the dispersion and transfer of all kinds of nano-carbon materials by using a tannic acid metal complex, and relates to the technical field of nano-carbon materials. Background technique [0002] Nano-conjugated carbon materials (carbon nanotubes, graphene, and conjugated conductive polymers, etc.) coatings are widely used in new applications such as energy storage, biosensing, analysis, and flexible electronic devices due to their excellent electrochemical properties and good thermal conductivity. Materials have a wide range of applications. However, due to the high hydrophobicity and size / morphological dependence of conjugated carbon nanomaterials, it is limited to uniform dispersion or immobilization on the target substrate, especially in aqueous solution; the lack of strong interaction between the coating and the substrate material is easy to separate, It cannot be applied as a whole material, which i...

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Problems solved by technology

The temperature of the preparation process of the chemical deposition method is too high for the carbon coating substrate, and the preparation environment is harsh. This method is limited to graphite-derived carbon materials; the electrophoretic deposition method is suitable for polyaniline, which has polar groups. For materials, the introduction of carbon nanotubes or pure graphene covalent bonds will damage the carbon conjugated structure, reduce the performance of the carbon material itself and have high requirements for the cleanliness of the substrate surface; the film-forming method has low utilization rate of materials, There is a lack of strong interaction between the coating and the substrate; the vacuum filtration method is time-consuming and energy-consuming, and only a carbon material film can be obtained after suction filtration, and another method is required to fix it to the substrate

Aqueous phase self-assembly deposition method, this method uses the interaction between the matrix and nano-carbon materials to realize the transfer and fixation of carbon materials, and its final coating structure is easy to adjust, but in solving the problem of hydrophilicity of carbon materials, if The introduction of covalent bond modification will affect the performance of carbon materials

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