Translational energy selection of molecular precursors to oxygen adsorption on Pt(111)

被引：47

作者：

Nolan, PD ^{[1
]}

Lutz, BR ^{[1
]}

Tanaka, PL ^{[1
]}

Davis, JE ^{[1
]}

Mullins, CB ^{[1
]}

机构：

[1] Univ Texas, Dept Chem Engn, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.81.3179

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Adsorption intermediates of oxygen on a platinum (111) surface were examined with electron energy-loss spectroscopy (EELS) and molecular beams. Low incident kinetic energies promote initial adsorption into both a superoxolike (870 cm(-1)) and peroxolike (690 cm(-1)) molecular surface species at 77 K. High incident energies, however, exclusively populate the more strongly bound peroxolike species, suggesting a close correlation between incident kinetic energy and the reaction coordinate for adsorption. This investigation directly verifies surface intermediates in high kinetic energy adsorption and provides evidence of translational energy affecting adsorption product distribution. [S0031-9007(98)07249-4].

引用

页码：3179 / 3182

页数：4

共 23 条

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[2] AN EELS AND TDS STUDY OF MOLECULAR-OXYGEN DESORPTION AND DECOMPOSITION ON PT(111) [J].