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

Figure 8

(a–d) O 1 s core level fitting of XPS spectra for Au/E-ZnO Schottky heterojunction nanocomposites with different loading times (0 s, 20 s, 40 s, and 80 s), respectively.

(a)

(b)

(c)

(d)