Surface phase transitions of Pt(110) studied by desorption dynamics of product CO2 in steady-state CO oxidation

I. Rzeznicka; L. Morales De La Garza; T. Matsushima

doi:10.1116/1.1488945

Surface phase transitions of Pt(110) studied by desorption dynamics of product CO₂ in steady-state CO oxidation

I. Rzeznicka, L. Morales De La Garza, T. Matsushima

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Angular distributions of desorbing CO₂ and the surface structure transformation of (1X2) into (1X1) on Pt(110) in the course of CO oxidation were studied through the analysis of both AR product measurements and LEED intensity. It was found that CO₂ is highly formed on the declining (111) terraces of (1X2) domains, except for high CO pressure above the site switching. The productivity of CO₂ per unit area of (1X2) domains increased more than ten times in the inhibited region. Furthermore, the switching observed from angular distribution changes was sensitive to the disappearance of (1X2) domains.

Original language	English
Pages (from-to)	1475-1480
Number of pages	6
Journal	Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume	20
Issue number	4
DOIs	https://doi.org/10.1116/1.1488945
Publication status	Published - 2002 Jul
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films

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abstract = "Angular distributions of desorbing CO2 and the surface structure transformation of (1X2) into (1X1) on Pt(110) in the course of CO oxidation were studied through the analysis of both AR product measurements and LEED intensity. It was found that CO2 is highly formed on the declining (111) terraces of (1X2) domains, except for high CO pressure above the site switching. The productivity of CO2 per unit area of (1X2) domains increased more than ten times in the inhibited region. Furthermore, the switching observed from angular distribution changes was sensitive to the disappearance of (1X2) domains.",

author = "I. Rzeznicka and {De La Garza}, {L. Morales} and T. Matsushima",

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AU - Rzeznicka, I.

AU - De La Garza, L. Morales

AU - Matsushima, T.

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N2 - Angular distributions of desorbing CO2 and the surface structure transformation of (1X2) into (1X1) on Pt(110) in the course of CO oxidation were studied through the analysis of both AR product measurements and LEED intensity. It was found that CO2 is highly formed on the declining (111) terraces of (1X2) domains, except for high CO pressure above the site switching. The productivity of CO2 per unit area of (1X2) domains increased more than ten times in the inhibited region. Furthermore, the switching observed from angular distribution changes was sensitive to the disappearance of (1X2) domains.

AB - Angular distributions of desorbing CO2 and the surface structure transformation of (1X2) into (1X1) on Pt(110) in the course of CO oxidation were studied through the analysis of both AR product measurements and LEED intensity. It was found that CO2 is highly formed on the declining (111) terraces of (1X2) domains, except for high CO pressure above the site switching. The productivity of CO2 per unit area of (1X2) domains increased more than ten times in the inhibited region. Furthermore, the switching observed from angular distribution changes was sensitive to the disappearance of (1X2) domains.

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