Fig. 2: XANES spectra for electronic structure and charge transfer. | Communications Materials

Fig. 2: XANES spectra for electronic structure and charge transfer.

From: Advanced X-ray absorption spectroscopy for probing dynamics in CO2 reduction reaction electrocatalysts

Fig. 2

a Ni K-edge XANES spectra of A–Ni–NG, A–Ni–NSG and NiPc. b Normalized operando Ni K-edge XANES spectra for A–Ni–NG at various biases in 0.5 M KHCO3 aqueous solution at room temperature in 1 atm of Ar or CO2. c Structural evolution of the active site in electrochemical CO2 reduction38 (a–c reproduced with permission from ref. 38. Copyright. 2018, Spring Nature). d Comparison of the various operando XANES spectra. e Schematic illustration of the expected origin of the electronic structure of NiS mimicking that of Ni–NC in real time39 (d, e reproduced with permission from ref. 39. Copyright. 2022, Wiley-VCH GmbH).

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