Fig. S12. Optical band gaps of the (a) Ta3N5 samples determined by UV/Vis diffuse reflectance spectroscopy (Fig. S4). (b) Valence-band spectra of the Ta3N5 samples obtained by XPS. (c) Diagram of the band energy of the Ta3N5 samples with different structures and the electrochemical potentials for CO2 reduction. Fig. S13. STEM image and EDS mapping profiles for Ta3N5 cuboids with simultaneous photo-deposition of Pt and MnOx as cocatalysts.
Fig. S12. Optical band gaps of the (a) Ta3N5 samples determined by UV/Vis diffuse reflectance spectroscopy (Fig. S4). (b) Valence-band spectra of the Ta3N5 samples obtained by XPS. (c) Diagram of the band energy of the Ta3N5 samples with different structures and the electrochemical potentials for CO2 reduction. Fig. S13. STEM image and EDS mapping profiles for Ta3N5 cuboids with simultaneous photo-deposition of Pt and MnOx as cocatalysts.
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