STABLE AND METASTABLE PHASES OF WATER ADSORBED ON CU(111)

被引：69

作者：

HINCH, BJ ^{[1
]}

DUBOIS, LH ^{[1
]}

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

JOURNAL OF CHEMICAL PHYSICS | 1992年 / 96卷 / 04期

关键词：

D O I：

10.1063/1.461971

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：

Metastable and stable phases of water adsorbed at low coverages on Cu(111) were studied using vibrational spectroscopy (both time-resolved and high-resolution electron energy-loss spectroscopies) and temperature programmed desorption. The two water species have distinct spectroscopic signatures and different desorption kinetics. The more stable species appears to be three-dimensional clusters of bulklike, polycrystalline ice while the metastable species was observed to have a higher desorption rate despite a larger activation enthalpy for desorption. A simple model is proposed to explain this intriguing result. The conversion from the metastable to the stable species, as well as the affects of preadsorbed carbon monoxide on the adsorption/desorption kinetics, are also discussed.

引用

页码：3262 / 3268

页数：7

共 23 条

[11] THE LAW OF CORRESPONDING STATES FOR CHEMISORBED LAYERS WITH ATTRACTIVE LATERAL INTERACTIONS [J].