Figure 6.

(a)–(c)TEM images of Cu₂ONPs formed using a VFD operating under continuous flow of water at 0.25 mL/min, with the glass tube at a 45° tilt angle and rotating at 7.5 k rpm, using a 1064 nm pulsed laser operating at 600 mJ, irradiating a pure copper target. (d)–(f) CuONPs after heating the as-prepared solutions at 50 °C for 10 h. Samples were prepared using drop casting on a grid.