Innovative Fe single-atoms confined on Ti3C2 MXenes Show Promising Results for Hydrogen Peroxide Production

26/11/2024

A new study explores the potential of Fe(SA)-Ti₃C₂ MXenes as efficient, precious-metal-free electrocatalysts for the oxygen reduction reaction (ORR), with a focus on their ability to selectively generate hydrogen peroxide (H₂O₂). The research, published in Journal of Materials Chemistry A, highlights a novel preparation method of Fe single-atoms confined on Ti₃C₂T_x MXene with different surface terminations (T = Cl, Br, NH) using molten salts.

Advanced AC-HAADF-STEM imaging confirmed the presence of isolated Fe atoms, while electrocatalytic tests revealed:

• H₂O₂ Selectivity: Surface terminations and electrolyte pH influenced the selectivity.
• High Efficiency: At pH 13, Fe(SA)-Ti₃C₂(NH)_x achieved a 75% H₂O₂ generation efficiency, competitive with leading Fe single-atom electrocatalysts.

This work underlines the potential of single-atom MXenes in sustainable energy and chemical production technologies.

👉 Read the full study: https://doi.org/10.1039/D4TA02721C