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Figure 9
(a) SEM image of electrodeposited FexOy NPs. (b) Cyclic voltammetry curve measured in water on FexOy NPs. (c) Fe L3,2-edge XAS calculations by Cowan's multiplet program for Fe2+ Oh (red curve), Fe3+ Oh (green curve) and Fe3+ Td (blue curve); (d) operando Fe L3-edge spectra for pristine FexOy NPs (bottom, black) and for the reduced material under an applied voltage of −1.4 V (top, black). The corresponding calculated curves are displayed beneath each spectrum, together with the weighted sums that best reproduce the experimental data.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 5| September 2026|
https://doi.org/10.1107/S1600577526005825
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