Ferric iron tetroxide-loaded copper nanoparticles and its preparation method and application in the preparation of root-resistant materials

Abstract

The invention discloses a ferric oxide-supported copper nano-particle and its preparation method and its application in the preparation of root-blocking materials; The reduced copper nanoparticles, wherein, in each nanoparticle, the weight ratio of ferric iron tetroxide to reduced copper is 1:0.3-1.2. In this method, ferric ferric oxide nanoparticle balls are first dispersed in chloroform, then copper chloride solution, sodium citrate and hydrolyzed gelatin are added in sequence, stirred at a temperature of 40-50°C for 2-4h, washed, and the product is separated by magnetic absorption That is, copper nanoparticles supported by ferric oxide are obtained. In the present invention, the root-blocking effect of the root-blocking agent prepared by using ferric iron tetroxide-loaded copper nanoparticles as an additive depends on the interference of copper ions on substances in plants, and the destruction of root cell membranes when copper ions come into contact with root cells, thereby inhibiting taproot. Growth, promote the growth of lateral roots, and achieve the effect of root resistance and anti-puncture.

Description

technical field [0001] The invention relates to the field of root-blocking agents for ecological buildings; in particular, it relates to ferric iron tetroxide-loaded copper nanoparticles, a preparation method thereof, and an application in preparing root-blocking materials. Background technique [0002] With the development requirements of building greening, planted roofs are rapidly developing and popularized in my country. A major problem facing planted roofs is to prevent plant roots from growing downward and destroying building structures. Copper ions can inhibit plant root growth and hinder root elongation. Reduce root mass. [0003] At present, most of the root-resistance materials in China use copper base or copper salt as the source of resistance. Copper-based polymer coils have been widely used on planted roofs, but they require a large amount of copper and are costly. There is the problem that the interface between the metal and the polymer is not firmly bonded, an...

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Problems solved by technology

[0006] The first purpose of the present invention is to provide a copper ferric oxide-loaded nano-particle and its preparation method. The method is optimized for the existing copper or copper salt as a root inhibitor, which has a large amount of copper and high cost. The production and preparation of copper root resistance agent, and greatly overcome the shortcomings of metal copper and single copper ion in the actual use of root resistance, through the addition of copper nanocomposite materials, the durability of the coil is enhanced, and the additives are optimized Compatibility in polymer matrices; the method utilizes copper nanomaterials and ferric oxide (Fe 3 o 4 ) The advantages of nanomaterials are:

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