Design and synthesis of silver nanoparticles with different shapes under the influence of photon flows

Abstract

In this work, silver nanoparticles with different shapes were designed by dipole approximation method. In particular, the properties of silver nanoparticles of spherical, decahedral, and triangular prism shapes have been considered. Presented nanoparticles are synthesized by photoinduced recovery of Ag ions from silver salt solution. Nanoparticle shape was changed from spherical to triangular prism after their additional irradiation by green and red light flows. Decahedral nanostructures were obtained using additional irradiation by blue photon flows. As a result, silver colloids changed their color from yellow to green, blue, and orange, respectively. The resulting colloidal solutions also differ by higher purity of the synthesized nanoparticles and don’t need cooling. A comparison of the calculated absorption coefficient with the experimental dependences for the synthesized silver nanoparticles was carried out and showed high correlation. Absorption spectra have additional peaks at longer wavelength as a result of the formation of prismatic and decahedral structures in solution from spherical nanoparticles. Design and synthesis of silver nanoparticles with different shapes under the influence of photon flows open up new perspectives using different sensing applications.