Formation of Mixed (NOads+COads)/(1 × 1) Islands on the Pt(100)-(hex) Surface
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Surface Science
ISSN: 0039-6028
|
| Output data |
Year: 1998,
Volume: 414,
Number: 3,
Pages: 409-422
Pages count
: 14
DOI:
10.1016/S0039-6028(98)00533-0
|
| Tags |
Adsorption, Carbon monoxide, Island adsorption, Nitric oxide, Pt(100) surface, Surface reconstruction |
| Authors |
Smirnov M.Yu.
1
,
Zemlyanov D.
1
,
Gorodetskii V.V.
1
,
Vovk E.I.
1
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, Pr. Ak. Lavrentieva 5, Novosibirsk 630090, Russia
|
|
Funding (2)
|
1
|
Russian Foundation for Basic Research
|
96-03-33211
|
|
2
|
International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union
|
93-0964
|
The coadsorption of NO and CO on the reconstructed Pt(100)-(hex) surface at 300 K was studied by means of high-resolution electron energy-loss spectroscopy (HREELS). NO+CO coadsorption layers prepared in three different ways were investigated: (1) CO adsorption after coverage of the surface with NOads/(1×1) islands; (2) NO adsorption after coverage of the surface with CO, which was mainly adsorbed on structural defects of the reconstructed (hex) phase (low coverage of COads); and (3) NO adsorption after coverage of the surface with COads/(1×1) islands (high coverage of COads). In all cases the strong mutual interaction between NOads and COads molecules resulted in the formation of mixed (NOads+COads)/(1×1) islands. The mixed islands of NOads and COads covered unreconstructed (1×1) patches. The islands were separated from each other by either free (hex) phase or a region consisting of structural defects, which appeared during the course of a surface (hex)→(1×1) back-reconstruction. In the mixed (NOads+COads)/(1×1) islands, it was found that structural defects were occupied preferentially by molecularly adsorbed CO.