Fig. 2: Attachment of surface ligands to copper.
From: Ligand-modified nanoparticle surfaces influence CO electroreduction selectivity
a STEM HAADF image of C18S–CuNPs. b Cu L-edge TEY spectra of C18S–CuNPs and CuNPs showing higher relative CuI content in the thiolated sample. Cu, CuO, and Cu2O spectra are taken from Jiang et al48. c Color maps of the Cu oxidation state, from EELS analysis of Cu L-edge, across particle surface as indicated on the STEM HAADF image. d R-space EXAFS spectra of catalysts C18S–CuNPs and CuNPs.
