Plasmonic Ni-doped W₁₈O₄₉ with dual active sites drives efficient methanol dehydration to dimethyl ether.

ABSTRACT: Photocatalytic methanol dehydration to dimethyl ether (DME) offers a sustainable alternative to energy-intensive thermocatalysis, yet its practical application remains constrained by low efficiency. Herein, we designed Ni-doped plasmonic W₁₈O₄₉ nanowires that synergistically integrates low-coordinated W and Ni dual active sites with surface plasmon resonance for enhanced photocatalytic performance. The synergistic effect of W and Ni dual sites is amplified by plasmonic electron oscillations to facilitate the C-O bond cleavage and C-O-C coupling, driving efficient methanol-to-DME conversion. The optimized Ni_0.66-W₁₈O₄₉ achieves a DME yield of 133.7 ± 3.3 mmol g^-1 h^-1 with 98.7% selectivity under 400 mW cm^-2

SUBMITTER: Tian D 

PROVIDER: S-EPMC12623422 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature