Preparation method of silver-loaded mesoporous silicon dioxide antibacterial agent

Abstract

The invention discloses a preparation method of a silver-loaded mesoporous silicon dioxide antibacterial agent. The preparation method disclosed by the invention comprises the following steps: dissolving a template agent, a silicon source and silver nitrate in water to obtain a silver sol solution, adding a chloride aqueous solution into the silver sol solution, stirring and mixing to form silicon dioxide / silver chloride gel, drying gel, and carrying out thermal treatment to obtain the mesoporous silicon dioxide antibacterial agent containing elemental silver. The prepared silver-loaded mesoporous silicon dioxide antibacterial agent is 200-1000 cm<2> / g in specific surface area, 5-30 nm in aperture and 1.0-5.0 cm<3> / g in pore volume; the mass percentage of elemental silver is 10-30%. The antibacterial agent prepared by the preparation method disclosed by the invention keeps the ordered porous structure, the uniform aperture, the larger specific surface area and the pore volume of the carrier material; the antibacterial agent prepared by the preparation method disclosed by the invention has the characteristics of being easy for controlling the content of antibacterial active bodies, simple in preparation method, broad-spectrum in antibacterial property, durable in antibacterial efficiency, steady in antibacterial property, nontoxic to human body and the like and can be widely applied in the fields of ceramics, plastics, textiles, coatings, water treatment and the like.

Description

technical field [0001] The invention relates to a preparation method of an inorganic antibacterial agent, in particular to a preparation method of a silver-loaded mesoporous silicon dioxide antibacterial agent. Background technique [0002] In modern life, there are a large number of viruses, bacteria, fungi and other microorganisms in the environment, which not only pollute the environment, but also directly lead to the occurrence and infection of many diseases, posing a great threat to human health. In recent years, due to the impact of "SARS", "bird flu" and "H1N1 influenza", people's awareness of hygiene has been continuously enhanced, and the demand for antibacterial materials and their products has greatly increased. [0003] Antibacterial agents used by people can be divided into three categories: natural antibacterial agents, inorganic antibacterial agents and organic antibacterial agents. Natural antibacterial agents refer to the parts of animals and plants that ha...

AI Technical Summary

Problems solved by technology

Natural antibacterial agents refer to extracting parts of animals and plants with antibacterial functions, but they have poor stability and heat resistance, short duration of drug effects, limited sources, and cannot be produced on a large scale

Organic antibacterial agents are generally chemically synthesized substances such as organic acids, alcohols, and phenols, but their chemical stability and thermal stability are poor, and they are prone to microbial resistance, so they cannot be applied to products such as coatings, plastics, chemical fibers, ceramics, and rubber.