Figure 1: Physicochemical characterization. | Nature Communications

Figure 1: Physicochemical characterization.

From: Highly active oxygen reduction non-platinum group metal electrocatalyst without direct metal–nitrogen coordination

Figure 1

(a) X-ray diffraction pattern of FePhen@MOF-ArNH3 and Basolite-ArNH3. (b) Diffraction patterns of iron, iron carbide and iron nitrides. (c) SEM image of Basolite-ArNH3. Scale bar, 2 μm. Inset TEM image of amorphous carbon. Scale bar, 100 nm. (d) SEM image of FePhen@MOF-ArNH3. Scale bar, 2 μm. Inset TEM image of bamboo-jointed CNT. Scale bar, 100 nm. (e) HR-TEM image of iron encapsulated in bamboo joints of CNT in FePhen@MOF-ArNH3. Scale bar, 10 nm. (f) HR-TEM image of Fe/FexC nanoparticle surrounded by graphite layers. Scale bar, 5 nm. (g) 57Fe Mössbauer spectrum of FePhen@MOF-ArNH3 measured at room temperature.

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