Fig. 4: Enhancement effect of adsorbed CO on the surfaces of different substrates supported Cu2O.
From: Mechanistic insights into C-C coupling in electrochemical CO reduction using gold superlattices

Cyclic voltammograms and in situ ATR-SEIRA spectra of Cu2O on CDFs (blue lines) and GNSs (orange lines) in different electrolytes: a−c 0.1 M HClO4, d−f 0.5 M KHCO3. The scanning rate for CV measurements is 50 mV s−1.