Method for preparing Nano silver grain, and prepared Nano silver grain
A technology of silver nanoparticles and silver nitrate, applied in botany equipment and methods, chemical instruments and methods, dyeing polymer organic compound treatment, etc., can solve the problems of low solubility of silver nanoparticles, limited use of silver nanoparticles, insolubility, etc. , to achieve good water solubility and biocompatibility, no toxic side effects, and good uniformity
Inactive Publication Date: 2007-10-10
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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Abstract
This invention discloses a method for preparing Ag nanoparticles. The method comprises: (1) mixing acid solution of chitosan and AgNO3 solution to obtain a mixed solution; (2) adjusting the pH value to 3.0-5.0; (3) irradiating without oxygen. The deacetylation degree of chitosan is greater than or equal to 70%, and the average molecular weight is less than or equal to 20000. The concentration of chitosan in the mixed solution is 0.001-0.05 wt. %, and that of AgNO3 is 0.01-23.5 mM. The obtained Ag nanoparticles have such advantages as small average particle size, uniform particle size distribution, high solid content, high water solubility, and high biocompatibility.
Application Domain
BiocideCatalyst carriers +3
Technology Topic
Ag nanoparticlesNanometre +10
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PUM
Property | Measurement | Unit |
The average particle size | 10.0 | nm |
The average particle size | 8.0 | nm |
The average particle size | 5.0 | nm |
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