Adsorption and desorption of NO and CO on a Pt(111)-Ge surface alloy

被引：35

作者：

Fukutani, K

Magkoev, TT

Murata, Y

Terakura, K

机构：

[1] UNIV TOKYO,INST IND SCI,MINATO KU,TOKYO 106,JAPAN

[2] RES DEV CORP JAPAN,PRESTO,TOKYO,JAPAN

[3] NATL INST ADV INTERDISCIPLINARY RES,JRCAT,TSUKUBA,IBARAKI 305,JAPAN

来源：

SURFACE SCIENCE | 1996年 / 363卷 / 1-3期

关键词：

carbon monoxide; germanium; low index single crystal surfaces; metallic surfaces; nitrogen oxides; photochemistry; photon stimulated desorption (PSD); platinum; resonance enhanced multiphoton ionization mass spectroscopy (REMPI/MS); surface photochemistry; thermal desorption spectroscopy; vibrations of adsorbed molecules;

D O I：

10.1016/0039-6028(96)00136-7

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：

Adsorption of NO and CO on Pt(lll) alloyed with a few per cent of Ge is investigated by reflection-absorption infrared spectroscopy and thermal desorption spectroscopy. Both molecules exclusively occupy the on-top sire in contrast to bridge and on-top adsorption on clean Pt(lll). The adsorption energy of NO is dramatically reduced compared with that on clean Pt(lll). Photodesorption of CO observed on the clean Pt(lll) is noticeably suppressed on the Pt(lll)-Ge surface alloy, while NO desorption is induced by photon irradiation. The rotational and translational temperatures of photodesorbed NO are similar to those on clean Pt(111). The change in chemical properties of Pt(lll) for molecular adsorption is discussed in terms of d-band filling of the substrate.

引用

页码：185 / 194

页数：10

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