Interaction of acetic acid with ethylenediamine on a Ni(111) surface studied by XPS
Affiliation:
1. Department of Physics, Tehran University, Tehran, Iran;2. Laser and Optics Research School, NSTRI, Tehran, Iran
Abstract:
The interaction of ethylenediamine with a Ni(111) surface was investigated in the temperature range 170–420 K by means of X-ray photoelectron spectroscopy. Molecularly absorbed species were predominant below 290 K giving the C1s and the N 1s peaks at 286.4 and 399.9 eV (at 250 K) and at 286.0 and 399.7 eV (at 290 K), respectively. The amount dehydrogenated species increased during heating up to 420 K resulting in a variation of the N 1s binding energy as 399.7 → 397.7 → 397.5 → 397.7 eV. The variation was correlated with successive dehydrogenation reactions such as
