Model Ag/HOPG Catalysts: Preparation and STM/XPS Study Full article
| Journal |
Catalysis Science and Technology
ISSN: 2044-4753 , E-ISSN: 2044-4761 |
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| Output data | Year: 2011, Volume: 1, Number: 8, Pages: 1432-1439 Pages count : 8 DOI: 10.1039/C1CY00127B | ||
| Tags | ORIENTED PYROLYTIC-GRAPHITE; X-RAY PHOTOELECTRON; AG NANOPARTICLES; ETHYLENE EPOXIDATION; SURFACE-DEFECTS; SILVER; HOPG; SIZE; OXIDATION; XPS | ||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Russian Foundation for Basic Research | 10-03-01138 |
| 2 | Президиум РАН | 27.51 |
Abstract:
Model catalysts—Ag on highly oriented pyrolytic graphite (Ag/HOPG)—have been studied using scanning tunneling microscopy (STM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and X-ray induced Auger electron spectroscopy (XAES). Two types of catalysts were compared: Ag nanoparticles supported on sputtered and non-sputtered HOPG, and the influence of graphite surface defects on the stabilization of Ag nano-sized particles was discussed. A procedure for the preparation of stable (up to 250 °C under a submillibar oxygen/ethylene pressure) silver nanoparticles is suggested. The disappearance of Ag particles in STM images after a sample treatment in the ambient conditions is explained in terms of silver penetration into graphite and the loss of conductivity due to adsorption of contaminants.
Cite:
Demidov D.V.
, Prosvirin I.P.
, Sorokin A.M.
, Bukhtiyarov V.I.
Model Ag/HOPG Catalysts: Preparation and STM/XPS Study
Catalysis Science and Technology. 2011. V.1. N8. P.1432-1439. DOI: 10.1039/C1CY00127B WOS Scopus РИНЦ ANCAN OpenAlex
Model Ag/HOPG Catalysts: Preparation and STM/XPS Study
Catalysis Science and Technology. 2011. V.1. N8. P.1432-1439. DOI: 10.1039/C1CY00127B WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Apr 12, 2011 |
| Accepted: | Jul 22, 2011 |
| Published online: | Aug 22, 2011 |
| Published print: | Nov 1, 2011 |
Identifiers:
| Web of science: | WOS:000296026000020 |
| Scopus: | 2-s2.0-80055047575 |
| Elibrary: | 18011192 |
| Chemical Abstracts: | 2011:1327020 |
| Chemical Abstracts (print): | 155:626105 |
| OpenAlex: | W1973491383 |