Fig. 3: Spectroscopic investigations of various Cu films and DFT calculations on different Cu facets.
From: Efficient CO2 electroreduction on facet-selective copper films with high conversion rate

In situ ATR-SEIRAS spectra of a HRS-Cu; b MRS-Cu; c LRS-Cu; d adsorption geometry for different C−C coupling precursors (i.e., COL−COL, COB−COL, COB−COB), where solvent molecules are not presented to show the adsorbate configurations; e reaction barriers for C−C coupling from different precursors on Cu(100) and Cu(111) facets.