Fig. 3
From: Facile Synthesis of Monodisperse Gold Nanocrystals Using Virola oleifera
a UV-visible spectra of gold nanoparticles (AuNPs) under different conditions. Note the plasmon peak in the inset. b–d TEM images of AuNPs produced using 1, 2, and 3 mL of Virola oleifera, respectively, and a reaction time of 20 min. b TEM images of AuNPs produced with 1 mL and 20 min. (The scale bars are 0.5 μm for the enlarged image, 0.2 μm for the top image, and 100 nm for the bottom image.) c TEM images of AuNPs produced with 2 mL and 20 min. (The scale bars are 0.5 μm for the enlarged image, 0.2 μm for the top image, and 20 nm for the bottom image.) d TEM images of AuNPs produced with 3 mL and 20 min. (The scale bars are 200 nm for the enlarged image, 100 nm for the top image, and 50 nm for the bottom image)