Figure 2From: Facile synthesis of concentrated gold nanoparticles with low size-distribution in water: temperature and pH controls TEM images of GNPs with indicated size and polydispersity. They are prepared by conventional citrate method from 0.25 mM (A), 0.50 mM (B), 1.0 mM (C), 1.5 mM (D), 2.0 mM (E), and 2.5 mM (F) chloroauric acid, respectively. Scale bar: 20 nm.Back to article page