Fig. 1: Synthesis route and catalyst characterization. | Nature Communications

Fig. 1: Synthesis route and catalyst characterization.

From: Engineering high-density microcrystalline boundary with V-doped RuO2 for high-performance oxygen evolution in acid

Fig. 1

a Diagram of the synthesis procedure for GB-V-RuO2 (left) and V-RuO2 (right). b XRD patterns of GB-V-RuO2 and V-RuO2. c Aberration-corrected HAADF-STEM image of GB-V-RuO2, with the abundant grain boundaries marked with white dashed lines. d Magnified HAADF-STEM image of GB-V-RuO2. Inset shows the corresponding fast Fourier transform pattern. e, f are the intensity profiles of the blue and orange boxes in (d), respectively. g HAADF-STEM image of V-RuO2. h shows the temperature-scale image of the selected region in (g). i and k show the presence of twinning and a GB in GB-V-RuO2, respectively. j and l illustrate the atomic arrangement of twinning and a GB, respectively. m, n HAADF-STEM together with elemental mappings of Ru, V and O atoms in GB-V-RuO2, and corresponding EDX spectrum. Scale bar, 100 nm. Source data for Fig. 1 are provided as a Source Data file.

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