HREELS INVESTIGATION OF THE COADSORPTION OF CO AND NO ON NI(111) AT ROOM-TEMPERATURE

被引：7

作者：

CAPUTI, LS ^{[1
]}

CHIARELLO, G ^{[1
]}

MOLINARO, S ^{[1
]}

AGOSTINO, RG ^{[1
]}

AMODDEO, A ^{[1
]}

COLAVITA, E ^{[1
]}

机构：

[1] UNIV CALABRIA,DIPARTIMENTO FIS,I-87036 COSENZA,ITALY

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 1993年 / 64-5卷

关键词：

D O I：

10.1016/0368-2048(93)80072-T

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The adsorption of CO and NO, and the coadsorption of both species on Ni(111) at room temperature, has been studied by high resolution electron energy loss spectroscopy. Both CO and NO molecules adsorb whithout dissociation, giving the well-known c(4x2) LEED pattern. In the case of coadsorption, preadsorbed CO molecules are easily removed by incoming NO, whatever the initial CO coverage. In the reverse case, preadsorbed NO molecules inhibit CO adsorption for initial NO coverages higher than about 0.1 ML. For lower NO coverages, CO are allowed to adsorb, but their vibrational spectrum is substantially different from that observed for CO adsorption on the clean surface. The results are interpreted in terms of the different electronic structure of the two molecules.

引用

页码：145 / 149

页数：5

共 20 条

[1] SINGLE LOCAL SITE STRUCTURE FOR VIBRATIONALLY DISTINCT ADSORPTION STATES - NO ON NI(111) [J].