Date of application: 2005.0 1.27.
Applicant: Zhejiang University.
Inventor: Ji Jian; ? Fu Jinhong; ? Shen Jiacong
Address: No.38 Dazhe Road, Hangzhou, Zhejiang 3 10027
Abstract: The invention discloses a preparation method of nano-silver solution and nano-silver powder with high polymer as stabilizer. 0.00 1 ~ 0.05g/ml water-soluble polymer stabilizer is mixed with 0.00 1 ~ 0. 1mol/l silver nitrate, and then 0.00 1 ~ 0.2mol/l water-soluble reducing agent is used to reduce the silver nitrate into silver nanoparticles with a particle size of 5 ~/kloc-. Nano-silver can also be precipitated, washed, dried and crushed by sodium hydroxide solution to obtain nano-silver with a particle size of 5-5~ 100nm. The solution prepared by the invention can be used in families and public places, and can also be used as medical care products. The nano silver powder prepared by the invention can be widely used in the fields of household appliances, plastic products, coatings and the like, and the invention does not use organic solvents, thus meeting the requirements of environmental protection. The invention not only has the advantages of low cost, simple operation and the like, but also the prepared nano-silver particles have extremely strong antibacterial ability and broad-spectrum antibacterial property.