In situ fabrication of atomically adjacent dual-vacancy sites for nearly 100% selective CH₄ production.

ABSTRACT: The photocatalytic CO₂-to-CH₄ conversion involves multiple consecutive proton-electron coupling transfer processes. Achieving high CH₄ selectivity with satisfactory conversion efficiency remains challenging since the inefficient proton and electron delivery path results in sluggish proton-electron transfer kinetics. Herein, we propose the fabrication of atomically adjacent anion-cation vacancy as paired redox active sites that could maximally promote the proton- and electron-donating efficiency to simultaneously enhance the oxidation and reduction half-reactions, achieving higher photocatalytic CO₂ reduction activity and CH₄ selectivity. Taking TiO₂ as a photocatalyst prototype, the operando electron paramagnetic resonance s

SUBMITTER: He Y 

PROVIDER: S-EPMC11194552 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature