Stable hydroxyl-anchored CuNi nanocatalysts from CuNiMgAl-LDH thermal reduction for efficient photothermal CO₂ conversion.

ABSTRACT: Cu-based nanocatalysts hold promise for the reverse water-gas shift (RWGS) reaction. However, irreversible sintering of the Cu catalyst for deactivation remains a persistent challenge under thermal or photothermal processes. In this study, we develop an anti-sintering catalyst using CuNiMgAl layered-double-hydroxide (LDH)-derived hydroxyl engineering to anchor ultrafine CuNi nanoparticles, achieving stable photothermal RWGS conversion. For Cu₃Ni-MA, the oxyphilic Ni dopants facilitate the formation of hydroxyl-coordinated Cu²⁺-Ni²⁺ species during the calcination of LDH-derived materials; meanwhile, the Ni incorporation enhances the plasmonic effect of CuNi nanocatalysts to drive H₂ spillover for hydroxyl replenishment under light irradiation, whi

SUBMITTER: Wang Z 

PROVIDER: S-EPMC12647594 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature