Fig. 8: Operando SERS spectra of Cu foam in different electrolytes.
From: Dynamics of bulk and surface oxide evolution in copper foams for electrochemical CO2 reduction

The Cu foams were operated at -0.7 V for 30 min. a Representative spectra of Cu foam in CO2-saturated KHCO3 (black line), CO2-saturated KPi (purple line), N2-saturated KHCO3 (brown line) and N2-saturated KPi (magenta line) electrolytes (0.1 M). b The spectrum obtained in 13CO2-saturated KH13CO3 (0.1 M) can be described by four Gaussian components (blue line) and the spectrum obtained in 12CO2-saturated KH12CO3 (0.1 M) by five Gaussian components (orange line). Experimental data, solid lines; simulated curves, dashed lines.