Preparation method of high activity copper-loaded alumina nanosheet root inhibitor

Abstract

The invention discloses a preparation method of a highly active copper-loaded alumina nanosheet root inhibitor, which comprises the following steps, wherein the parts are parts by weight: 1) mixing aluminum chloride solution, diethylene glycol and Mix and stir one part of surfactant evenly, add concentrated ammonia water with a mass fraction of 25% and continue to stir, and continue to obtain a mixed solution at 60-80°C for 1-2 hours; 2) transfer the above mixed solution into a high-temperature reactor for high-temperature reaction After cooling to room temperature, the reaction product is washed with absolute ethanol, centrifuged, and dried to obtain highly active alumina nanosheets; 3) dispersing the highly active alumina nanosheets in cyclohexane, adding copper acetylacetonate and sodium borohydride Stir and react at 60-80°C for 2-4 hours, then centrifuge, wash with ethanol, and dry to obtain a highly active copper-loaded alumina nanosheet root inhibitor. The invention has the advantages of simple process, low cost, environmental friendliness, less additive amount, high specific surface area and copper loading per unit area, good root resistance effect and strong durability.

Description

technical field [0001] The invention relates to a root inhibitor. Background technique [0002] In the process of urbanization, the planted roof can be used as a form of greening that does not occupy the ground land, which can well solve the contradiction between infrastructure construction and greening land. Since the roots of plants grow downward and have strong penetrating ability, the biggest technical problem in the planting roofing project is how to prevent the roots of plants from growing into the building, so the waterproof root layer is particularly important. However, not all root-blocking materials are suitable for planting roofs. The materials need to be environmentally friendly, easy to construct, and lightweight. However, there is no root-blocking material with a wide range of applications and a significant waterproof and root-blocking effect. [0003] With the continuous advancement of science and technology, nanomaterials have been continuously developed and...

AI Technical Summary

Problems solved by technology

[0004] At present, copper is the most commonly used element in root inhibitors, but direct addition of copper-containing reagents will cause the overflow of metal elements and pollute the environment; in order to solve the above problems, CN109096630A discloses a compound type fixed root inhibitor for planting roofs. The preparation method of the preparation method is to react copper sulfate or copper chloride, sodium citrate with β-cyclodextrin or its derivatives, and then further modify to obtain a kind of octyl methylphenoxypropionate / β-cyclodextrin modified Copper nanocrystals, this root inhibitor reduces the overflow rate to a certain extent and improves the compatibility with organic materials. The amount is still relatively high; CN110240733A discloses a kind of iron-ferric oxide-loaded copper nanoparticles and its preparation method and application in the preparation of root resistance materials, using ferric oxide nanospheres as a carrier, reducing iron-loaded copper nanoparticles on the surface, This method can further suppress the overflow of copper elements, but there are problems that the process is complicated, the specific surface area and the copper loading per unit area need to be further improved

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