Electric Discharge Synthesis of Colloidal Silver Nanoparticle Solutions Using Various Modifiers for Immobilization on the Surface of Track-Etched Membranes

• Published in: Inorganic materials 2023-03, Vol.59 (3), p.337-347
• Main Authors: Fadeikina, I. N., Andreev, E. V., Kristavchuk, O. V., Kukushkin, V. I., Nechaev, A. N., Apel, P. Yu
• Format: Article
• Language: English
• Subjects: Absorption spectroscopy; Chemistry; Chemistry and Materials Science; Electric discharges; Electron microscopy; Industrial Chemistry/Chemical Engineering; Inorganic Chemistry; Materials Science; Mathematical analysis; Membranes; Nanoparticles; Polyethylene terephthalate; Polyethyleneimine; Raman spectra; Raman spectroscopy; Silver; Zeta potential
• ISSN: 0020-1685; 1608-3172
• DOI: 10.1134/S0020168523030056

— Colloidal solutions of silver nanoparticles have been prepared by the electric discharge method using three distinct modifiers: carbonate and citrate ions and polyethylenimine. According to optical absorption spectroscopy data and their zeta potential, the solutions were highly stable. The geometric parameters of the nanoparticles have been determined by transmission electron microscopy. The nanoparticles have been immobilized on the surface of polyethylene terephthalate track-etched membranes. The resultant surface nanostructures have been examined by scanning electron microscopy and Raman spectroscopy. The materials thus obtained have been shown to exhibit surface-enhanced Raman scattering using 4-aminothiophenol as test molecule. Relative Raman gain coefficients have been calculated.