Fig. 6 | Nature Communications

Fig. 6

From: Two-site H2O2 photo-oxidation on haematite photoanodes

Fig. 6

Experimental realization of hysteresis. Forth and back linear sweep voltammetry scans at different H2O2 concentrations in alkaline solution (1  M NaOH) under white LED illumination of 80 mW cm−2: a 1 mM, b 5 mM and c 500 mM. Hysteresis is observed only at [H2O2]=5 mM. The arrows indicate the direction of potential sweep from low to high potentials and then back to low potentials

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