One-Step Synthesis of Copper and Cupric Oxide Particles from the Liquid Phase by X-Ray Radiolysis Using Synchrotron Radiation

Figure 9

Micro-Raman spectra of the measurement positions (a), (b), and (c) on the particle aggregate synthesized from CuSO₄ solution mixed with 2-propanol (solution #4) and Si substrate. The inset photographs display the green laser position on the measurement area. Indexes were taken from the following Raman spectrum patterns: Cu₂O, CuO, and Cu₄O₃ [38, 39].

(a)

(b)

(c)

(d)