Fig. 1: Electronic band gap position of BiVO4 and the redox potential range for suitable redox mediators. | Nature Communications

Fig. 1: Electronic band gap position of BiVO4 and the redox potential range for suitable redox mediators.

From: Tunable multi-electron redox polyoxometalates for decoupled water splitting driven by sunlight

Fig. 1

a Scanning electron microscope (SEM) images of the BiVO4 samples and illustration shows a single BiVO4 crystal with (110) and (010) facets. b Ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) of the BiVO4 sample. c Mott-Schottky plots (inverse capacitance squared (1/C2) versus potential (V)) of the BiVO4 samples. d Energy diagram of the photocatalytic system with the participation of POM-based redox mediators. CB stands for conduction band. VB stands for valence band. e- stands for photogenerated electron. h+ stands for photogenerated hole.

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