Preparation Method of the Silver Colloids with Nanometer Size Irradiated by Radiation and Its Silver Colloid with Nanometer Size

摘要

PURPOSE: A method for producing a nanometer-size silver colloid is provided to massively produce a nanometer-size silver colloid used as a builder for surface enhanced Raman scattering, a conductive adhesive, an ink additive, an electromagnetic wave isolator and antibiotics. CONSTITUTION: A method for producing nanometer-size silver colloid comprises the steps of: melting such a silver salt as AgNO3, AgClO4 or AgClO3 in tertiary distilled water; adding alcohol or an organic solvent as an in-process material remover; adding sodium dodecyl sulfate, polyvinyl alcohol, or pulyvinylpyrrolidone as a colloid stabilizer; and irradiating radioactive rays of a predetermined amount. Accordingly, nanometer-size silver colloid of uniform distribution is produced in large quantities.