Ag-Co₃ O₄ -CoOOH-Nanowires Tandem Catalyst for Efficient Electrocatalytic Conversion of Nitrate to Ammonia at Low Overpotential via Triple Reactions.

ABSTRACT: The electrocatalytic conversion of nitrate (NO₃ ‾) to NH₃  (NO₃ RR) offers a promising alternative to the Haber-Bosch process. However, the overall kinetic rate of NO₃ RR is plagued by the complex proton-assisted multiple-electron transfer process. Herein, Ag/Co₃ O₄ /CoOOH nanowires (i-Ag/Co₃ O₄  NWs) tandem catalyst is designed to optimize the kinetic rate of intermediate reaction for NO₃ RR simultaneously. The authors proved that NO₃ ‾ ions are reduced to NO₂ ‾ preferentially on Ag phases and then NO₂ ‾ to NO on Co₃ O₄  phases. The CoOOH phases catalyze NO reduction to NH₃  via NH₂ OH intermediate. This unique cata

SUBMITTER: Wu S 

PROVIDER: S-EPMC10667848 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature