Study on the resonance scattering spectra of green silver nanoparticles

The green nanoparticles of silver in solution were prepared by a two - step photochemical procedure, combining ultraviolet light and visible light irr idiation, in the presence of the photoreducer, sodium citrate. There are th ree resonance scattering peaks at 340 nm,470 nm and 520 nm and two absorpti on peaks at 399.4 nm and 691.4 nm for the green silver nanoparticles. Based on the facts of the formation of supramolecule in the substable state, the mechanisms for the resonance scattering light and the supramolecular react ion are proposed.