Fig. 3: Mechanism for the formation of passivation nanolayer.
From: A ligand oxidation structure-adaptive strategy for copper passivation
a FTIR, b Raman, and c variable-temperature Raman spectra of Cu-TAC0.1–12. d UV/vis spectra of the reaction mixture of TPA + Cu2+, Catechol + Cu2+, and TPA + Catechol + Cu2+ in CH3CN. e O 1 s and f N 1 s XPS spectra of TAC, and Cu-TAC0.1–12 before and after soaking in 0.1 M NaOH for 24 h. g Cu 2p3/2 XPS fine spectra, a board satellite peak is caused by Cu2+; h Auger Cu LMM spectra of bare copper and Cu-TAC0.1–12 before and after corrosion in 0.1 M NaOH for 24 h. i Tafel plots of bare Cu and Cu-TAC0.1–12 in 0.1 M NaOH.
