Preparation method of hierarchical porous carbon fiber cloth capable of adsorbing and degrading formaldehyde

Abstract

The invention relates to the field of preparation of carbon fiber cloth, in particular to a preparation method of hierarchical pore carbon fiber cloth integrating formaldehyde adsorption and degradation, which comprises the following steps: S1, mixing ferric salt and dimethylformamide to form a solution A; s2, mixing polyacrylonitrile with the molecular weight of 150000, polyvinylpyrrolidone with the molecular weight of 360000 and dimethylformamide to form a solution B; s3, mixing titanium tetrachloride, water and ethanol, and drying to form a substance C; s4, mixing the solution A, the solution B and a substance C to form a solution D, transferring the solution D into an injector for electrospinning to obtain a fiber membrane, and calcining the fiber membrane to form the hierarchical porous carbon fiber cloth; the hierarchical porous carbon fiber cloth has a formaldehyde adsorption function, nano TiO2 distributed on the hierarchical porous carbon fiber cloth can react with O2 and H2O in the air to generate. O2 <-> and. OH so as to achieve the purpose of oxygenolysis of formaldehyde, and the carbon fiber cloth can be recycled, does not cause secondary pollution to the environment, and reduces the use cost of a user.

Description

technical field [0001] The invention relates to the field of carbon fiber cloth preparation, in particular to a preparation method of a multi-level porous carbon fiber cloth which integrates adsorption and degradation of formaldehyde. Background technique [0002] The traditional formaldehyde removal is to spray the photocatalyst TiO in the air 2 Pharmacy, for TiO 2 For semiconductors, its photocatalytic mechanism is to use sunlight to irradiate TiO 2 On the catalyst, when the energy of the irradiated light is greater than that of TiO 2 , the light can be absorbed by the TiO 2 absorption, in TiO 2 The electrons in the valence band are activated to transition to the conduction band, thus, in TiO 2 There will be highly active photogenerated electrons (e - ) is generated, and a positively charged photogenerated hole (h) appears in its valence band. + ). Photogenerated electrons are reductive, photogenerated holes are strongly oxidative, and electron acceptors (such as O...

AI Technical Summary

Problems solved by technology

[0003] From the above introduction, it can be seen that the photocatalyst TiO 2 The spraying of medicaments into the air achieves the purpose of removing formaldehyde, but the problem that is widely ignored is that there is no effect on the photocatalyst TiO 2 Recycling, it is easy to cause secondary pollution to the environment, nano-sized TiO 2 Contact with the human body will cause human cell lesions, and there is a potential danger

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