Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 5, 2025

Abstract Designing electrocatalysts that can simultaneously suppress the hydrogen evolution reaction (HER) and stabilize multistep carbon intermediates remains a key challenge for electroreduction of CO 2 to methane (CH 4 ) under acidic conditions. Herein, dynamic restraint strategy is proposed achieve efficient synthesis CH in electrolyte by synergistic regulation proton transport interfacial charge distribution mesoporous silica coated silver nanoparticles (Ag@SiO ‐ M h). At high current density −132.26 mA cm −2 , Faradaic efficiency reaches 56.6% stable long time. The core innovation lies constructing bifunctional mechanism at metal‐non‐metal hybrid interface: controllable mesopores SiO form spatially confined proton‐relay channels, Si─O─H groups enriched on surface dynamically regulate supply through hydrogen‐bond network, which accurately drives *CO─*H coupling while inhibiting 60% HER. And, electron transfer from Ag significantly reduces energy barrier *CO protonation, promoting kinetic‐crucial *H─*CO pathway incline toward formation. This breaks bottleneck mutual restriction between activity stability traditional catalyst design, provides universal solution complex electrocatalytic systems with multi‐intermediate regulation.

Язык: Английский