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. 2023 Jun 6;15(24):29072–29083. doi: 10.1021/acsami.3c02884

Figure 5.

Figure 5

(A) Several subsequent cycles of light-induced water splitting on the Au/WC-700 surface with a total duration of 70 h; (B) details of the S 2p XPS peak of WC-700 measured before and after use in water splitting; (C) determination of the WF on Au/WC-700 in darkness, under illumination, and after rinsing of the samples with water; (D,E) Kelvin probe mapping of Au/WC-0 and Au/WC-700 performed in darkness and under simulated sunlight illumination; and (F) HRTEM-EDX measurements of WC-700 flakes after their illumination in Ag+ solution.