fig5
Figure 5. (A) Production rate of O2 and CO2 in the photoanodic compartment and H2 in the cathodic compartment during vapor-fed PEC water splitting under humidified argon flow with a TiO2 nanotube array photoanode (wavelength: 365 nm, irradiance: 40 mW cm-2, and applied voltage: 1.2 V). (B) Impact of the carrier gas (humidified argon and air) in the photoanode compartment on the photocurrent response of the anatase TiO2 nanotube array photoanode. Reproduced with permission from ref.[26], Copyright 2018 Wiley.
