RESEARCH / A0325
In situ stabilization of Cu+ for CO2 Electroreduction via Environmental-molecules-induced ZnO1-x shield
Read the original paper · 10.1038/s41467-025-61189-z ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Fig. 2 | Formation mechanism of ZnO1-x-Cu2O/Cu upon H2-C2H5OH treatment. a Operando normalized XANES spectra of ZnO1-x-Cu2O/Cu catalysts during H2- C2H5OH treatment and references of CuO, Cu2O and Cu foil at the Cu K edge, where ZnO/CuO@H2 represents the sample during H2 treatment, and ZnO1-x/ Cu@C2H5OH represents the sample during C2H5OH treatment. b Edge-shift quantification of Cu oxidation states during H2-C2H5OH treatment. c Operando normalized XANES spectra of ZnO1-x-Cu2O/Cu catalysts during H2-C2H5OH treatment
Fig. 4 | Stabilization of Cu+ at appropriate fraction for ethanol electrosynthesis. a Potential-depended Operando normalized XANES spectra of ZnO1-x-Cu2O/Cu catalysts during CO2RR and references of CuO, Cu2O, and Cu foil at the Cu K edge. b Average oxidation state of Cu in the ZnO1-x-Cu2O/Cu during CO2RR. c The corresponding k3-weighted FT-EXAFS spectra in R-space. d HRTEM image of ZnO1-x- Cu2O/Cu (the insets show the corresponding elemental mapping and highresolution STEM-HAADF image). e EELS signals of Cu L at different tagged sites in