Abstract: The adsorption of NO and CO on a nonhomogeneous Pt(100) surface made up of both the (hex) and (1 × 1) structural phases was studied at 300 K by means of high-resolution electron energy-loss spectroscopy (HREELS). The nonhomogeneous surface was prepared by titrating NOads/(1 × 1) islands formed on the original (hex) surface with deuterium and subsequent heating to desorb residual Dads. The as-prepared surface was assumed to consist of patches of the (1 × 1) structure surrounded by the (hex) surface. The ratio between the (1 × 1) patches and the (hex) area was controlled by the initial coverage of NOads before titration. The exposure of the nonhomogeneous surface to NO or CO at 300 K led to saturation of the (1 × 1) patches first. It was supposed that the NO and CO molecules adsorbing on the (hex) areas quickly diffuse along the surface, meet the (1 × 1) patches, and are “trapped” by them. NOads (COads) spreads on the surface of the (1 × 1) patches. As soon as the (1 × 1) patches are saturated, the adsorption-induced (hex) → (1 × 1) back-reconstruction takes place. The details of the NO and CO adsorption on the nonhomogeneous surface were compared with the process on the reconstructed and unreconstructed Pt(100) surfaces.

Cite: Zemlyanov D.Y. , Smirnov M.Y. , Vovk E.I.
NO and CO Adsorption on Nonhomogeneous Pt(100) Surfaces
Langmuir. 1999. V.15. N1. P.135-140. DOI: 10.1021/LA980793R WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Jul 1, 1998
Accepted:	Oct 1, 1998
Published print:	Jan 1, 1999
Published online:	Jan 5, 1999

Identifiers:

Web of science:	WOS:000077982800022
Scopus:	2-s2.0-0033524286
Elibrary:	13329726
Chemical Abstracts:	1999:8518
Chemical Abstracts (print):	130:115455
OpenAlex:	W2022149373

Citing:

DB	Citing
Web of science	3
Scopus	4
Elibrary	4
OpenAlex	4

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