ADSORPTION OF ACRYLONITRILE ON PT(111) AND AU(111) AT 95-K IN THE MONOLAYER AND MULTILAYER RANGES STUDIED BY NEXAFS, UPS, AND FT-IR

被引:43
作者
PARENT, P [1 ]
LAFFON, C [1 ]
TOURILLON, G [1 ]
CASSUTO, A [1 ]
机构
[1] LAB MAURICE LETORT,CNRS,F-54600 VILLERS LES NANCY,FRANCE
关键词
D O I
10.1021/j100014a028
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We present here UPS, FT-IR, and polarization-dependent NEXAFS measurements at the C(1s) and N(1s) edges of acrylonitrile (CH2=CH-C=N) monolayers and multilayers on Pt(111) and Au(111). The NEXAFS results show that the condensed multilayers are almost oriented parallel to the surface. The monolayer formed at 95 K is also oriented flat on the Pt(111) and Au(111) surfaces. The NEXAFS and UPS results show that acrylonitrile is physisorbed on Au(111) and chemisorbed on Pt(111) via the nitrogen lone pair orbital. This orbital hybridizes with the top of the platinum d band, giving rise to an extra antibonding level that is clearly seen on the NEXAFS spectra. The FT-IR results show a low-energy shift of the C=N stretching vibrational frequency, related to this hybridization.
引用
收藏
页码:5058 / 5066
页数:9
相关论文
共 16 条
[1]   A MODEL FOR THE PLANE TO PLANE VARIATIONS IN CATALYTIC ACTIVITY SEEN DURING NITRIC-OXIDE DECOMPOSITION ON PLATINUM [J].
BANHOLZER, WF ;
PARK, YO ;
MAK, KM ;
MASEL, RI .
SURFACE SCIENCE, 1983, 128 (01) :176-190
[2]   30.4-NM HE(II) PHOTOELECTRON-SPECTRA OF ORGANIC-MOLECULES .1. HYDROCARBONS [J].
BIERI, G ;
ASBRINK, L .
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1980, 20 (1-2) :149-167
[3]   COMPARED BONDING GEOMETRIES OF C2H4 AND C3H6 ON K-COVERED PT(111) SURFACES [J].
CASSUTO, A ;
MANE, M ;
TOURILLON, G ;
PARENT, P ;
JUPILLE, J .
SURFACE SCIENCE, 1993, 287 (pt A) :460-464
[4]   AMOUNT AND ORIENTATION OF PI-BONDED ETHYLENE FORMED AT 95-K ON K/PT(111) SURFACES (AND O/PT(111) SURFACES) - A TDS, UPS, XPS, AND NEXAFS STUDY [J].
CASSUTO, A ;
MANE, M ;
JUPILLE, J ;
TOURILLON, G ;
PARENT, P .
JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (14) :5987-5993
[5]   A NEXAFS AND UPS STUDY OF THE ADSORPTION OF TETRACHLOROETHYLENE, TRICHLOROETHYLENE, ISO-DICHLOROETHYLENE, CIS-DICHLOROETHYLENE, AND TRANS-DICHLOROETHYLENE ON PLATINUM SURFACES AT 95-K - MULTILAYERS AND MONOLAYERS [J].
CASSUTO, A ;
HUGENSCHMIDT, MB ;
PARENT, P ;
LAFFON, C ;
TOURILLON, HG .
SURFACE SCIENCE, 1994, 310 (1-3) :390-398
[6]   ADSORPTION OF ALDEHYDES AND KETONES ON PLATINUM AND PALLADIUM - INFLUENCE OF STEPS, OPEN FACES AND METAL NATURE - A THEORETICAL-STUDY [J].
DELBECQ, F ;
SAUTET, P .
SURFACE SCIENCE, 1993, 295 (03) :353-373
[7]   HIGH-RESOLUTION HE-I PHOTOELECTRON-SPECTRUM OF ACRYLONITRILE [J].
DELWICHE, J ;
GOCHELDUPUIS, M ;
COLLIN, JE ;
HEINESCH, J .
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1993, 66 (1-2) :65-74
[8]  
JORGENSEN WJ, 1973, ORGANIC CHEM BOOK OR
[9]  
Kimura K., 1981, HDB HE I PHOTOELECTR
[10]  
LAFFON C, UNPUB