Kinetically restrained oxygen reduction to hydrogen peroxide with nearly 100% selectivity.

ABSTRACT: Hydrogen peroxide has been synthesized mainly through the electrocatalytic and photocatalytic oxygen reduction reaction in recent years. Herein, we synthesize a single-atom rhodium catalyst (Rh₁/NC) to mimic the properties of flavoenzymes for the synthesis of hydrogen peroxide under mild conditions. Rh₁/NC dehydrogenates various substrates and catalyzes the reduction of oxygen to hydrogen peroxide. The maximum hydrogen peroxide production rate is 0.48 mol g_catalyst^-1 h^-1 in the phosphorous acid aerobic oxidation reaction. We find that the selectivity of oxygen reduction to hydrogen peroxide can reach 100%. This is because a single catalytic site of Rh₁/NC can only catalyze the removal of two electrons per substrate molecule;

SUBMITTER: Chen J 

PROVIDER: S-EPMC9127111 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature