Fig. 1: Surface morphology of the Cu1Co1 catalyst. | Nature Communications

Fig. 1: Surface morphology of the Cu1Co1 catalyst.

From: Spectroelectrochemical insight into copper cobalt catalysts for CO2 and nitrite co-electroreduction to urea

Fig. 1: Surface morphology of the Cu1Co1 catalyst.

a–c SEM images of an as-deposited catalyst at different magnifications; image in (c) is manually colorized to support the discrimination between the catalyst (red) and carbon fiber paper (gray). Scanning transmission electron microscopic (STEM) image of an as-deposited catalyst (d), and corresponding EDS mapping of Cu (red), Co (green), and O (blue) (e). f High resolution TEM images of an as-deposited catalyst at different magnifications. Yellow lines highlight the Cu(111) and Co(111) facets with ~2.1 Å spacing. The inset shows the corresponding fast Fourier transform (FFT) pattern (scale bar: 10 nm−1), confirming the crystalline nature of the observed lattice fringes. g Selected area electron diffraction (SAED) pattern of an as-deposited catalyst showing diffraction ring corresponding to face-centered cubic (fcc) (111) and (200) facets.

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