Preparation method of core-shell structure CuCl/Cu nano rod material

Abstract

The invention provides a preparation method of a core-shell structure CuCl / Cu nano rod material. The preparation method comprises the steps that a copper nano rod is subjected to even ultrasonic dispersion in oxygen-removed ethyl alcohol, and is attached to the surface of a filtration membrane through vacuum suction filtration; an ethyl alcohol solution of copper chloride is prepared and added into a vacuum suction filter container; the solution is rapidly pumped off after the filtration membrane where the copper nano rod is attached is immersed in the solution; copper chloride rapidly reactswith the copper nano rod in the process that the solution immerses the copper nano rod and the solution volatilizes, and the core-shell structure CuCl / Cu nano rod material is generated. The method provided by the invention is characterized in that a layer of cuprous chloride crystal is formed in situ on the surface of the copper nano rod; the property is stable; the morphology is controllable; thenano rod material has high active surface; the reaction time is short; the reaction process is not limited in the solution; reaction additives are reduced, and the method has the characteristics thatthe material is easy to prepare, the cost is low, and the material is easy to put into industrial batch production.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a preparation method of a CuCl / Cu nanorod material. Background technique [0002] Cuprous chloride is often used as a catalyst, bactericide, mordant, and decolorizer, and has a wide range of uses in metallurgical industry, electroplating industry, pharmaceutical chemical industry, pesticide engineering, battery industry, and rubber industry. There are many methods for preparing cuprous chloride crystal materials, such as introducing sulfur dioxide into a mixed solution of copper sulfate and sodium chloride to obtain cuprous chloride precipitation, but due to the high cost of raw materials and the presence of corrosive substances in the mother liquor Strong sulfuric acid and other disadvantages limit the application and promotion of this method; the direct oxidation method of chlorine gas adopted in industry first oxidizes elemental copper into Cu 2+ , Cu 2+ It reacts with ex...

AI Technical Summary

Problems solved by technology

There are many methods for preparing cuprous chloride crystal materials, such as introducing sulfur dioxide into a mixed solution of copper sulfate and sodium chloride to obtain cuprous chloride precipitation, but due to the high cost of raw materials and the presence of corrosive substances in the mother liquor Strong sulfuric acid and other disadvantages limit the application and promotion of this method; the direct oxidation method of chlorine gas adopted in industry first oxidizes elemental copper into Cu 2+ , Cu 2+ It reacts with excessive elemental copper to produce cuprous chloride. Due to the direct use of industrial chlorine, the safety is poor and the protective equipment needs to be corroded, which is not conducive to environmental protection and high investment, which limits the application of this method; Other preparation methods often also leave concentrated water containing substances such as acid, chlorine gas, sodium chloride, and iron, causing environmental pollution

[0003] The size, shape, specific surface area and crystallographic direction of the exposed surface of the crystal all affect the performance of the catalyst. However, the preparation method of highly active cuprous chloride microcrystals / nanocrystals with uniform particle size, stable performance and controllable morphology is scarce. There are reports

Ting Xie et al. used copper chloride, acetylacetone, and ethylene glycol to react at a temperature of 100-140°C for 8-72h, and obtained cuprous chloride tetrahedral crystal materials with a scale of tens to hundreds of microns; Ying Huang et al. Amorphous cuprous chloride nanoparticles with a scale ranging from tens to hundreds of nanometers were prepared in a co-solvent. During the reaction, urea and ascorbic acid were added. The reaction system was always in a co-solvent, and the reaction time was 1 h; The preparation method of cuprous chloride is also carried out in solution, the reaction process requires a variety of additives, the reaction time is long, and the reaction temperature is high

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