SILICA NANOTUBE CONTAINING SILVER NANOPARTICLES WITH HIGH DISPERSIBILITY, AND METHOD FOR MANUFACTURING SAME

摘要

The present invention relates to a silica nanotube containing silver nanoparticles with high dispersibility, and to a method for manufacturing same, wherein silver (Ag) nanoparticles are adsorbed to the silica nanotube to produce the silver nanoparticle-containing silica nanotube. In detail, silver (Ag) nanoparticles are adsorbed to the inner wall of the silica nanotube having a pore size of approximately 40 nm, to prevent the silver nanoparticles from agglomerating as the nanoparticles have a dispersibility superior to any type of solvent or nanopowder, and to prevent the silver nanoparticles from escaping from the silica nanotube, thus reducing the risk of being absorbed by a human body. Further, as silver nanoparticles are synthesized at room temperature and atmospheric pressure by utilizing the silica nanotube, the cost of synthesizing silver nanoparticles is remarkably reduced as compared to conventional methods for synthesizing silver nanoparticles, which enables mass production. Further, silver nanoparticles have a high sterilizing capability and a high antibacterial activity, and a high solvent resistance to alcohol, acid, alkali, pure water and the like, which enables silver nanoparticles to be applied to a wide variety of application fields. The present invention improves preservation stability which might cause problems in conventional coating liquids or solutions containing silver nanoparticles, which cannot be preserved in air. Thus, the present invention can be applied in a wider range of fields and also in a field requiring long-term preservation. Furthermore, the present invention has a superior bonding stability and oxidation resistance at a temperature higher than 700°C which is the melting point of silver, and thus can be applied to products requiring high-temperature resistance, namely, ceramics, special films, fibers, etc. The silver nanoparticles of the present invention have superior antibiotic properties and EMI-shielding properties, which improve the applicability to a microwave oven or the like, which conventional products may not have.