Enhanced electrocatalytic biomass oxidation at low voltage by Ni²⁺-O-Pd interfaces.

ABSTRACT: Challenges in direct catalytic oxidation of biomass-derived aldehyde and alcohol into acid with high activity and selectivity hinder the widespread biomass application. Herein, we demonstrate that a Pd/Ni(OH)₂ catalyst with abundant Ni²⁺-O-Pd interfaces allows electrooxidation of 5-hydroxymethylfurfural to 2, 5-furandicarboxylic acid with a selectivity near 100 % and 2, 5-furandicarboxylic acid yield of 97.3% at 0.6 volts (versus a reversible hydrogen electrode) in 1 M KOH electrolyte under ambient conditions. The rate-determining step of the intermediate oxidation of 5-hydroxymethyl-2-furancarboxylic acid is promoted by the increased OH species and low C-H activation energy barrier at Ni²⁺-O-Pd interfaces. Further, the Ni²⁺-O-Pd interfaces preve

SUBMITTER: Pei A 

PROVIDER: S-EPMC11246419 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature