Patent ID: 8252342

Claim:
A method for producing a complex of metallic nanoparticles and inorganic clay; comprising a step of: mixing a metal ionic compound, layered inorganic clay and an organic promoter to perform a reduction reaction in water at 45 to 50° C. for 0.5 to 24 hours; wherein said inorganic clay is silicate clay, said metal ionic compound is silver nitrate and said organic promoter is selected from the group consisting of monoethanolamine (MEA), diethanolamine (DEA) and triethanolamine (TEA), with the weight ratio of said silver nitrate to said organic promoter being 1:1 to 1:3; whereby said organic promoter reduces metal ions in the metal ionic compound into metal atoms which then aggregate into metallic nanoparticles to form a complex of said metallic nanoparticles and inorganic clay.