Metal oxalate nanofiber and preparation method as well as application thereof

Abstract

The invention discloses a preparation method of a metal oxalate nanofiber. The method comprises the following steps: dissolving metal salt solution in ethanol solution to prepare solution A to serve as metal precursor, wherein the metal salt comprises at least one metal element, cobalt; dissolving oxalic acid in the ethanol solution to prepare solution B, then titrating the solution B in the solution A under magnetic stirring, stirring for 20-50 minutes, transferring obtained suspension in a high-pressure sterilizer, storing at 100-200 DEG C for 12-48 hours, cooling to room temperature, washing the finally obtained product with de-ionized water and drying at 50-100 DEG C to obtain the metal oxalate nanofiber. The preparation method has the advantages of simple preparation process, low cost, easiness in control of preparation conditions, short synthesis period and the like. The prepared metal oxalate nanofiber has a superior degradation effect to congo red dye in a hydrogen peroxide system as a catalyst, and the water quality purification effect can be obviously improved.

Description

technical field [0001] The invention relates to a preparation method of a novel metal oxalate material and research on degrading Congo red dye in water, belonging to the field of water treatment. Background technique [0002] Dye wastewater is the main component of printing and textile chemical industry wastewater. In recent years, with the rapid development of dyes and printing and dyeing industries, new additives and dyes have been widely used in printing and dyeing chemical industry, and the wastewater produced by them has become more and more harmful to the environment. People have found more and more toxic organic substances in wastewater. Some organic substances can even cause gene mutation, cancer, and chronic heavy metal poisoning. Moreover, dye wastewater is discharged into rivers, oceans, and surface water. Even if the concentration of dye components is very low, It will also reduce the light transmittance discharged into the water body, cause damage to the water b...

AI Technical Summary

Problems solved by technology

[0002] Dye wastewater is the main component of printing and textile chemical industry wastewater. In recent years, with the rapid development of dyes and printing and dyeing industries, new additives and dyes have been widely used in printing and dyeing chemical industry, and the wastewater produced by them has become more and more harmful to the environment. People have found more and more toxic organic substances in wastewater. Some organic substances can even cause gene mutation, cancer, and chronic heavy metal poisoning. Moreover, dye wastewater is discharged into rivers, oceans, and surface water. Even if the concentration of dye components is very low, It will also reduce the light transmittance discharged into the water body, cause damage to the water body ecosystem, cause serious pollution to the environment, and then affect human health and life

Congo red is one of the dyes with a wide range of uses. It has a high loss rate during production and use, and it is relatively easy to enter the water body, causing damage to the environment; Congo red is a benzidine-type azo dye, and its chemical name is diphenyl -4,4'-bis(azo-2-)-1-aminonaphthalene-4-sodium sulfonate, due to the stability of its structure, the dye wastewater produced by it is difficult to pass through traditional physical, chemical and biological methods Degradation, although these methods can make the color of Congo red dye wastewater fade away, the intermediate products produced cannot be effectively degraded, which is more polluting to the environment

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