Optical and Structural Properties of ZnO Nanoparticles Synthesized by CO₂ Microwave Plasma at Atmospheric Pressure

Figure 3

(a)–(c) are the XRD patterns corresponding to samples A–C of Figure 2(c), respectively. (d) is the XRD pattern of a commercial ZnO.

(a)

(b)

(c)

(d)