Skip to main content
Figure 5 | Nanoscale Research Letters

Figure 5

From: Production of aqueous spherical gold nanoparticles using conventional ultrasonic bath

Figure 5

TEM images of gold nanoparticles formed by citrate reduction as function of elapsed time. TEM images of gold nanoparticles formed by citrate reduction as function of elapsed time when using a conventional ultrasonic bath (40 kHz, 300 W): (a) after 10 sec, (b) after 30 sec, (c) after 70 sec, (d) after 140 sec, (e) after 15 min; and (f) after 45 min. Initial HAuCl4 concentration was 0.25 mM, and molar ratio between HAuCl4 and sodium citrate was set at 1:3.5.

Back to article page