Figure 3From: Facile synthesis of concentrated gold nanoparticles with low size-distribution in water: temperature and pH controls TEM images and size distribution diagrams of GNPs. They were synthesized at boiling state under addition of different NaOH content of (A1) 3.1 mM, (A2) 4.4 mM, (A3) 5.3 mM, and (A4) 6.6 mM, respectively. Scale bar: 50 nm.Back to article page