Cooperative Fe-Ti dual-metal sites for highly efficient photocatalytic non-oxidative methane conversion.

ABSTRACT: Selective methane conversion is a promising low-carbon technology, yet developing catalysts capable of effectively activating inert C-H bonds under mild conditions remains challenging. Here, we designed Fe²⁺-□-Ti⁴⁺ dual-metal-sites on the high-activity {012} facets of defective ilmenite (Fe_1-x TiO_3-x -NS). Mechanistic studies revealed that Fe²⁺-□-Ti⁴⁺ can be excited to form a long-lived Fe³⁺-□-Ti³⁺ active state, while surface lattice oxygen stabilizes the reaction intermediates during multistep elementary reactions. This bimetal-oxygen synergistic strategy significantly reduces the activation barrier for C-H bond cleavage to just 0.15 eV, fully blocks the over-dehydrogenation of methyl int

SUBMITTER: Zhan Q 

PROVIDER: S-EPMC12519237 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature