Kennesaw State University, United States
pp. 107 - 110
Keywords: cellulose fiber, in-situ synthesis, catalysis, SERS, antimicrobial
This work involves in-situ preparation of silver nanoparticles on nonwoven fibers in baby wipes (a mixture of synthetic fiber and cellulose fiber) by impregnating Ag+ ions. The Ag+ ions in the micronanopores of the fibers are further reduced to silver nanoparticles (AgNPs) with ascorbic acid. The micronanoporous structure and hydroxyl groups in the cellulose fibers in baby wipe provided the empty spots and affinity for the immobilization of Ag+ ions first and then nanoparticles after reduction. The structure and properties of the composite wipes were verified by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), X-ray photoelectron spectroscopy (XPS) and Fourier transformed infrared spectroscopy (FTIR). We have tested this AgNP@wipe composite for catalytic activity, surface enhanced Raman scattering (SERS) and antimicrobial activity. The composite exhibited a very good catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol in presence of sodium borohydride, significant SERS activity for Raman active analyte molecules and antimicrobial activity.