Figure 4
Rh 3d (left column) and O 1s (right column) XPS core-level spectra of Rh metal foils. Bottom row: pristine Rh metal reference sample. Center row: Rh foil after a-C contamination and subsequent N2/O2/H2 plasma treatment. Top row: Rh foil after a-C contamination and subsequent N2/H2 plasma treatment. |