Oxygen Vacancy-Mediated Interfacial Charge Transfer of Au/ZnO Schottky Heterojunctions for Enhanced UV Photodegradation

Figure 3

(a–f) X-ray diffraction (XRD) patterns of pristine R-ZnO, bare E-ZnO, Au/R-ZnO, and Au/E-ZnO heterojunction nanocomposites for different Au NP deposition times (20 s and 40 s), respectively.