Fig. 1 | Nature Communications

Fig. 1

From: Highly selective oxygen reduction to hydrogen peroxide on transition metal single atom coordination

Fig. 1

TEM and XAS characterizations of M-CNT catalysts. High resolution TEM and aberration-corrected HAADF-STEM images of a, e Fe-, b, f Pd-, c, g Co-, d, h Mn-CNT are shown in upper and middle panels, respectively, in which multiple rolled graphene layers can be clearly distinguished with no metal clusters/particles observed in each sample. The bright dots in HAADF-STEM (marked by red arrows) represent some typical metal single atoms. Scale bars, 5 nm. i–l Corresponding Fourier transformed EXAFS spectra of M-CNTs are plotted in R space at the bottom panel in comparison to their bulk metal foil and metal oxide control samples

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