Controllable construction of cobalt nanoparticles in nitrogen-doped carbon nanotubes for photothermal CO₂ methanation.

ABSTRACT: The development of non-noble metal catalysts for efficient CO₂ methanation reaction under mild conditions remains a significant challenge. Herein, a non-noble metal catalyst, cobalt nanoparticles (Co NPs) encapsulated within the hollow channels of nitrogen-doped carbon nanotubes (Co@CN-700), was prepared by a pyrolysis-reduction strategy for photothermal CO₂ methanation. Remarkably, the Co@CN-700 catalyst achieved a prominent CH₄ production rate of 199.4 mmol g_cat ^-1 h^-1 with near-unity selectivity (99.4%) and high CO₂ conversion (85.8%) at 250 °C, which is outstanding compared to the catalysts reported. The electromagnetic simulation and density functional theory calculations demonstrated that the plasmonic reson

SUBMITTER: Xia Z 

PROVIDER: S-EPMC12188655 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature