fig4
From: NiFe Prussian blue analog cocatalyzed TiO2/In2S3 type-II heterojunction for solar water splitting
Figure 4. (A) Determination of capacitance (Cdl) values through ΔJvs. scan rate plots for TiO2, TiO2/In2S3, and TiO2/In2S3/NFP. (B) Nyquist plots of TiO2-based photoanodes measured at 0.47 V vs. RHE under AM1.5G illumination. Inset shows the equivalent circuit for alternating current (AC) impedance fitting. (C) M-S plots of TiO2-based photoanodes measured at a fixed frequency of 2,000 Hz in the dark. (D) Surface charge injection efficiency (ɳinj) of TiO2-based photoanodes. (E) Bulk charge separation efficiency (ɳsep) of TiO2-based photoanodes. (F) PL spectra of TiO2, TiO2/In2S3, and TiO2/In2S3/NFP.
