Chemical Kinetic Method for Active-Site Quantification in Fe-N-C Catalysts and Correlation with Molecular Probe and Spectroscopic Site-Counting Methods.

ABSTRACT: Mononuclear Fe ions ligated by nitrogen (FeN_x) dispersed on nitrogen-doped carbon (Fe-N-C) serve as active centers for electrocatalytic O₂ reduction and thermocatalytic aerobic oxidations. Despite their promise as replacements for precious metals in a variety of practical applications, such as fuel cells, the discovery of new Fe-N-C catalysts has relied primarily on empirical approaches. In this context, the development of quantitative structure-reactivity relationships and benchmarking of catalysts prepared by different synthetic routes and by different laboratories would be facilitated by the broader adoption of methods to quantify atomically dispersed FeN_x active centers. In this study, we develop a kinetic probe reaction method that uses t

SUBMITTER: Bates JS 

PROVIDER: S-EPMC10782517 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature