Method for preparing Ag-carrying carbon nano tube antibacterial agent

Abstract

The invention relates to a method for preparing an Ag-carrying carbon nano tube antibacterial agent. In the method, a carbon nano tube is taken as a raw material, silver ion is taken as an antibacterial material, gamma-aminopropyl triethoxy silane is used as a coupling modifier, deionized water is used as a solvent, absolute ethyl alcohol and deionized water are used as detergents, and sodium hydroxide is used as a pH value regulator. The method comprises the following steps: acidizing the carbon nano tube; then carrying out coupling modification; finally performing heating, water bath, stirring, water cycle and condensation in a three-neck flask to finally prepare the Ag-carrying carbon nano tube antibacterial agent. The method has short technical process, and less equipment is used; andthe product has high purity up to 98% and good antibacterial performance up to 96%, can be used as an antibacterial agent in various products with high added value; and the method is an ideal method for preparing the Ag-carrying carbon nano tube antibacterial agent.

Description

technical field [0001] The invention relates to a preparation method of a silver-loaded carbon nanotube antibacterial agent, which belongs to the technical field of preparation and application of an inorganic non-metallic carbon material antibacterial agent. Background technique [0002] With the improvement of industry and hygiene level, antibacterial products and antibacterial agents have been widely used, and they are most popular in the fields of textile, building materials, plastics, coatings, food, etc. Due to the advantages of inorganic antibacterial agents in durability, slow release, safety, In terms of stability and antibacterial effect, it is superior to organic antibacterial agents, and inorganic antibacterial agents are developing rapidly. [0003] The research on inorganic antibacterial agents began in the 1980s. Inorganic antibacterial agents have the advantages of broad-spectrum antibacterial properties, durability, drug resistance, chemical stability, and sa...

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Problems solved by technology

Carriers mainly include phosphate, zeolite, medical stone, bentonite, white carbon black, etc.; 200510120767.9 patent uses stilbite as carrier, and utilizes SiO in stilbite 4 Tetrahedron and AlO 4 Many pores and cavities formed by the space network structure of the tetrahedron, zinc ions compensate the missing positive charges in the stilbene, and a zinc-loaded stilbene antibacterial agent with good antibacterial properties is obtained. Although the antibacterial agent prepared by this method has good stability , not easy to change color, etc., but the preparation process is complicated, and the antibacterial performance of zinc is lower than that of silver

The 200510012591.5 patent uses medical stone with strong adsorption force and can dissolve minerals as a carrier, adds medical stone powder into antibacterial metal ion solution, and then adds ammonium nitrate or aluminum nitrate aqueous solution to the above suspension to obtain The slurry can be filtered and washed to obtain the medical stone antibacterial agent. The antibacterial agent prepared by this method has better bactericidal effect, long-lasting drug effect, and is harmless to the human body; 200410012416.1 patent adds water-soluble metal salt in the preparation process of nano-zinc oxide , the metal salt is made into a zinc-ammonia complex solution, and the nano-antibacterial agent can be obtained through co-precipitation. The antibacterial agent has the advantages of good bactericidal performance, fast, efficient, broad-spectrum, and long-lasting, but the reaction conditions of this process are relatively high.

[0004] Carbon nanotubes of carbon materials have been widely used due to their special metallographic structure, physical properties, chemical properties, as well as excellent mechanical properties, thermal conductivity, thermal stability, etc., and can be matched with various chemical substances; As an additive phase, carbon nanotubes are used more and more, such as applications in the fields of reinforcement, toughening, electrical conductivity, heat conduction, hydrogen storage, etc., and have received good results; but the application of carbon nanotubes in the field of antibacterial is still a new The technical gaps in the field need to be further explored and studied

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