Fig. 2: Detailed structural characterization of Se–Pt NPs with controlled shell thicknesses. | Nature Communications

Fig. 2: Detailed structural characterization of Se–Pt NPs with controlled shell thicknesses.

From: Selective and durable H2O2 electrosynthesis catalyst in acid by selenization induced straining and phasing

Fig. 2

a–d HAADF-STEM-EDS elemental mappings, (e–h) HRTEM images, and (i–l) corresponding strain mappings of (a, e, i) Pt NPs, (b, f, j) Se1‒Pt NPs, (c, g, k) Se2‒Pt NPs, and (d, h, l) Se3‒Pt NPs. m CV curves at 50 mV s−1 in N2-saturated 0.1 M HClO4, n Intensity profiles taken from the corresponding region in (e–h), and (o) surface valence band photoemission spectra of Pt NPs and Se‒Pt NPs with different shell thicknesses. The shaded area in Fig. 2m is the hydrogen adsorption/desorption peaks.

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