Figure 1 | Scientific Reports

Figure 1

From: Investigation of reactions between trace gases and functional CuO nanospheres and octahedrons using NEXAFS-TXM imaging

Figure 1

Both the shape as well as the particle size of the Cu2O particles crucially depend on the NaOH concentration.

(a) The particle radius has been determined using dynamic light scattering. (b) Concentrations up to 0.03 M NaOH result in spherical particles with a diameter around 200 nm and a reasonably narrow particle size distribution. (c) Above 0.04 M NaOH the shape changes to octahedrons and (d) further increasing the NaOH concentration results in larger particle sizes. (b–d) show scanning electron microscopy (SEM) images for particles produced using 0.03, 0.04 and 0.3 M NaOH, respectively.

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