Abstract
Hematite photoanode is a widely accepted stable photoelectrode in a strong alkali solution, such as NaOH aqueous solution. However, no one systematically investigates the photoelectrochemical stability of hematite-based photoanodes. More importantly, there are some contradictory results about the stability of hematite photoanodes in the literature. Herein we investigate the long-term stability of a Ti doped hematite (Ti:Fe2O3) photoanode in 1.0 M NaOH under visible light. Ti:Fe2O3 photoanode exhibits the significant photocurrent enhancement and the cathodic shift of the onset potential after long-term working in a strong alkali solution. Detailed characterizations reveal that an FeOOH layer, which serves as cocatalyst for self-improvement of Ti:Fe2O3 photoanodes, is formed at the interface of the Ti:Fe2O3/electrolyte junction.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
