Fig. 2: Energy-level diagram of the photoanode and cathode: type 2 heterostructures formed between BiVO4/WO3. | Nature Communications

Fig. 2: Energy-level diagram of the photoanode and cathode: type 2 heterostructures formed between BiVO4/WO3.

From: Self-cycled photo-Fenton-like system based on an artificial leaf with a solar-to-H2O2 conversion efficiency of 1.46%

Fig. 2: Energy-level diagram of the photoanode and cathode: type 2 heterostructures formed between BiVO4/WO3.

Photo-induced electron-hole pairs were separated via the inner electronic field; the electron transferred to the single-metal sites in the cathode through the external circuit to complete the 2e−ORR reaction, while the hole transferred to the BiVO4 surface and participated in the 2e−WOR on the SnO2-x/BiVO4/WO3 photoanode.

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