TY - JOUR
T1 - NO2 adsorption on graphite at 90 K
AU - Sjövall, P.
AU - So, S.K.
AU - Kasemo, B.
AU - Franchy, R.
AU - Ho, W.
N1 - Funding information:
Support of this work by the Cornell Materials Science Center through the National Science Foundation Grant No. DMR-88-18558 is gratefully acknowledged. In addition, one of us (BK) has benefited from a Fulbright Scholarship, and one (PS) is supported by the Swedish Energy Agency.
Publisher copyright:
© 1990 Published by Elsevier B.V.
PY - 1990/8/31
Y1 - 1990/8/31
N2 - High-resolution electron-energy-loss spectra (HREELS) and thermal-desorption spectra (TDS) are presented for NO2 adsorbed in the mono- and multi-layer regimes on graphite at 90 K. The TDS show a single desorption peak at 150 K at low coverages. A binding energy of 0.4 eV is estimated. At higher coverages, an additional peak due to multilayer desorption is observed at 140 K. The HREELS in the multilayer regime are fully compatible with a 3D solid structure of NO2 dimers. In the monolayer regime, a dimer interpretation is also favoured over monomer adsorption. The results are consistent with the dimers adsorbed with the molecular axis normal to the graphite surface.
AB - High-resolution electron-energy-loss spectra (HREELS) and thermal-desorption spectra (TDS) are presented for NO2 adsorbed in the mono- and multi-layer regimes on graphite at 90 K. The TDS show a single desorption peak at 150 K at low coverages. A binding energy of 0.4 eV is estimated. At higher coverages, an additional peak due to multilayer desorption is observed at 140 K. The HREELS in the multilayer regime are fully compatible with a 3D solid structure of NO2 dimers. In the monolayer regime, a dimer interpretation is also favoured over monomer adsorption. The results are consistent with the dimers adsorbed with the molecular axis normal to the graphite surface.
UR - http://www.scopus.com/inward/record.url?scp=44949291226&partnerID=8YFLogxK
U2 - 10.1016/0009-2614(90)87284-X
DO - 10.1016/0009-2614(90)87284-X
M3 - Journal article
AN - SCOPUS:44949291226
SN - 0009-2614
VL - 172
SP - 125
EP - 130
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 2
ER -