“…4A and 5B-G show the high resolution spectra of Ir 4d, Ir 4f, C 1s, P 2p, O 1s and N 1s peaks, respectively. The survey spectrum has different peaks for Na 1s (at 1071 eV), O 1s (at 532.3 eV), 67 Ir 4d (at 313.5 eV and 297.2 eV), 68 N 1s (at 400.9 eV), 69 C 1s (at 284.6 eV), 70 P 2p (at 132.9 eV), 71 Ir 4f (at 62.1 eV and 64.8 eV) 68,72 and P 3s (at 18.5 eV), 73 respectively, at their expected binding energy values. Fig.…”