Preparation of capped silver nanoparticles using sunlight and cationic surfactants and their biological activity

Silver nanoparticles were prepared in situ using sunlight and cationic surfactants. Silver nano-particles were confirmed using UV–vis spectrophotometry, transmission electron microscopy (TEM), electron diffraction, dynamic light scattering (DLS) and FTIR. Increasing the hydrophobic chain length of surfactants increase the amount of silver nano-particles formed in addition to increasing their stability. The results showed formed, uniform, well arranged hexagonal and spherical shapes. The prepared silver nanoparticles exhibit enhanced biological activity against Gram-positive, Gram-negative bacteria and sulfate reducing bacteria (SRB).

Graphical abstractSilver nanoparticles were prepared in situ using sunlight and cationic surfactants. Silver nano-particles were confirmed using UV–vis spectrophotometry, transmission electron microscopy (TEM), electron diffraction, dynamic light scattering (DLS) and FTIR. In situ photo preparation of silver nanoparticles.Figure optionsDownload full-size imageDownload as PowerPoint slide