Fig. 1: Characterization of catalyst.
From: Insights into free radical and non-radical routes regulation for water cleanup

a Elemental mapping of NC-FeMn(TA). b Aberration-corrected HAADF-STEM image of NC-FeMn0.3(TA) (Single atoms are marked by yellow circles; Bimetallic single atoms are marked by boxes). c Bond length of adjacent atoms. d FT-EXAFS spectra at the Fe K-edge of NC-FeMn(TA) and their reference samples. e FT-EXAFS spectra at the Mn K-edge of NC-FeMn(TA) and their reference samples. f 57Fe Mössbauer spectrum of pristine NC-FeMn(TA) measured at room temperature. g Wavelet transform of NC-FeMn(TA) and reference samples.