Fig. 10From: Platycodon saponins from Platycodi Radix (Platycodon grandiflorum) for the Green Synthesis of Gold and Silver Nanoparticles4-NP reduction reaction by sodium borohydride in the presence of the PD-AuNP catalyst. a UV-visible spectra and b plot of ln(C t /C 0 ) as a function of time (min)Back to article page