Cation Substitution Strategy for Developing Perovskite Oxide with Rich Oxygen Vacancy-Mediated Charge Redistribution Enables Highly Efficient Nitrate Electroreduction to Ammonia.

ABSTRACT: The electrocatalytic nitrate (NO₃^-) reduction reaction (eNITRR) is a promising method for ammonia synthesis. However, its efficacy is currently limited due to poor selectivity, largely caused by the inherent complexity of the multiple-electron processes involved. To address these issues, oxygen-vacancy-rich LaFe_0.9M_0.1O_3-δ (M = Co, Ni, and Cu) perovskite submicrofibers have been designed from the starting material LaFeO_3-δ (LF) by a B-site substitution strategy and used as the eNITRR electrocatalyst. Consequently, the LaFe_0.9Cu_0.1O_3-δ (LF_0.9Cu_0.1) submicrofibers with a stronger Fe-O hybridization, more oxygen vacancies, and more positive surface potential exhibit a highe

SUBMITTER: Chu K 

PROVIDER: S-EPMC10557098 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature