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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: J Am Chem Soc. 2014 Sep 19;136(39):13518–13521. doi: 10.1021/ja506998b

Figure 4.

Figure 4

Chronoamperometry experiments on NiO–P1–CODH under a flow of CO2 with the potential held at −0.27 V vs SHE. Potassium cyanate (KOCN) was injected to a final concentration of 60 mM. (A) Transient photocurrents under chopped illumination. (B) Continuous illumination to assess the stability of the photocathode assembly under turnover conditions; “d” represents dark intervals. The experiments were carried out under white-light illumination (45 mW cm−2) and CO2 flow in 0.2 M MES buffer (pH 6) at T = 32 °C.