Oxygen functionalization of carbon quantum dots enables efficient acidic hydrogen peroxide electrosynthesis.

ABSTRACT: The electrocatalytic synthesis of hydrogen peroxide (H₂O₂) using carbon-based materials is currently constrained by limited activity levels that fall short of industrially relevant production rates, particularly in acidic electrolytes, as well as a lack of atomic-level understanding of the active motifs. Herein, we utilize well-defined zero-dimensional carbon quantum dots (CQDs) with delicately engineered edge-site oxygen functional groups to elucidate the nature of sp³-hybridized carbon active sites and the promotional effects of aldehyde (-CHO), hydroxyl (-OH), and carboxyl (-COOH) groups in promoting acidic O₂-to-H₂O₂ conversion. Moreover, Ampere-level current densities are successfully achieved by integrating these CQDs

SUBMITTER: Ni B 

PROVIDER: S-EPMC12780056 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature