Elucidating electrochemical nitrate and nitrite reduction over atomically-dispersed transition metal sites.

ABSTRACT: Electrocatalytic reduction of waste nitrates (NO₃^-) enables the synthesis of ammonia (NH₃) in a carbon neutral and decentralized manner. Atomically dispersed metal-nitrogen-carbon (M-N-C) catalysts demonstrate a high catalytic activity and uniquely favor mono-nitrogen products. However, the reaction fundamentals remain largely underexplored. Herein, we report a set of 14; 3d-, 4d-, 5d- and f-block M-N-C catalysts. The selectivity and activity of NO₃^- reduction to NH₃ in neutral media, with a specific focus on deciphering the role of the NO₂^- intermediate in the reaction cascade, reveals strong correlations (R=0.9) between the NO₂^- reduction activity and NO₃^- r

SUBMITTER: Murphy E 

PROVIDER: S-EPMC10382506 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature