fig4
![Selective electroreduction of CO<sub>2</sub> to C<sub>2+</sub> products on cobalt decorated copper catalysts](https://image.oaes.cc/c55c2c4d-eca2-42d1-ba46-d431cd080ceb/cs4011.fig.4.jpg)
Figure 4. Potential-dependent ATR-SEIRAS spectra for (A) Cu and (B) CuCo0.4% at 0.1 to -1.4 V vs. RHE in CO2-saturated 0.1 M KHCO3. The spectrum taken at 0.2 V vs. RHE was used as the reference. ATR-SEIRAS: Attenuated total reflectance-surface-enhanced infrared absorption spectroscopy; RHE: reversible hydrogen electrode.