Abstract:
The synthesis of silver nanoparticles from silver nitrate solution in the presence of polyelectrolyte by photo-reduction was done. The effects of light, pH, concentration and time including the separation of silver nanoparticles outed off the mixed-solution by using the organic solvent were investigated. The experimental results indicated that it was possible to synthesis the silver nanoparticles from silver nitrate solution in the presence of polyelectrolytes ie. Poly(4-styrenesulfonic-co-maleic acid (sodium salt) or copolymer, alginic acid (sodium salt) or alginate and poly(methacrylic acid (sodium salt) or PMA. These polyelectrolytes could synthesis the silver nanoparticles with having 81 nanometers in diameter. The ability of light sources in order to synthesis nanoparticles can be ranked from higher levels to lower levels as follows: sun light, overhead lamp (250 watt), neon lamp (8 watt), UV lamp (4 watt), halogen lamp (50 watt) and tungsten-bulb (60 watt), respectively. Higher portion of polyelectrolyte in mixed solution or higher value of pH (pH 10), higher volume and productivity of nano-silver particles can be achieved. The productivity also depends upon the period of time used in process. Acetone, ethanol and Iso-propanol could separate the silver nanoparticles from the mixed solutions in which PMA and alginate are present. However these separation could not work in case of the copolymer mixed solution.