Boosting Z-scheme water splitting via increasing electron transport by manipulating multiple redox-active sites and potentials in metal hexacyanoferrate modifiers

Key Points

• This research aims to improve water splitting efficiency by enhancing electron transport using metal hexacyanoferrate (MHCF) modifiers.
• Investigated the redox properties of MHCFs at C-coordinated Fe III/Fe II sites.
• Evaluated electron transfer efficiency using various shuttle redox mediators.
• Manipulated multiple redox-active sites and potentials in MHCF modifiers.
• Increased electron transport resulted in a significant improvement in water splitting efficiency.
• Demonstrated a 30% enhancement in hydrogen production rate compared to standard methods.
• Achieved optimal performance at specific redox potentials with strong correlation to cocatalyst configuration.