Fig. 2

Characterization of green-synthesized AgNPs. (A)-1 light yellow and pink AgNPs solution (10 mg/L); (A)-2 TEM image and particle size distribution map of light yellow AgNPs solution; (A)-3 TEM image and particle size distribution map of pink AgNPs solution; (A)-4 TEM image and particle size distribution map of aggregated particles in pink AgNPs; (B) X-ray diffraction pattern of green-synthesized AgNPs; (C) FTIR spectra of alfalfa extracts and two kinds of AgNPs