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Highly Oxidized Gold Nanoparticles: In Situ Synthesis, Electronic Properties, and Reaction Probability Toward CO Oxidation Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455
Output data Year: 2015, Volume: 119, Number: 5, Pages: 2523-2529 Pages count : 7 DOI: 10.1021/jp510684s
Tags Co interactions In-situ synthesis Induction periods Oxidized gold Oxygen atmosphere Reaction probability RF discharge Room temperature
Authors Kibis Lidiya S. 1,2 , Stadnichenko Andrey I. 1,2 , Koscheev Sergey V. 1 , Zaikovskii Vladimir I. 1,2 , Boronin Andrei I. 1,2
Affiliations
1 Boreskov Institute of Catalysis SB RAS, 630090, pr. ak. Lavrentieva, 5, Novosibirsk, Russia
2 Novosibirsk State University, 630090, Pirogova St. 2, Novosibirsk, Russia

Funding (2)

1 Russian Foundation for Basic Research 12-03-31499
2 The Ministry of Education and Science of the Russian Federation

Abstract: Highly oxidized gold nanoparticles prepared by RF-discharge under an oxygen atmosphere were studied by X-ray photoelectron spectroscopy and transmission electron microscopy depending on the particle size. A surface-like gold oxide was found in the case of small nanoparticles (1–2 nm) obtained at the first steps of deposition. With an increase of the particle size up to 5 nm, a bulklike gold oxide was formed. The O 1s spectra exhibited an oxygen peak at binding energy Eb = 529.4 eV for the surface-like oxide and Eb = 530.7 eV for the bulklike gold-oxide. The reaction probability of oxidized gold nanoparticles was examined in the reaction of CO oxidation at room temperature. The surface-like gold oxide interacted with CO with a high reaction probability of approximately 0.005, while CO interaction with the bulklike oxide was characterized by an induction period with lower reaction probability (0.001). The mechanisms of the interaction of oxidized gold nanoparticles with CO depending on its size are discussed.
Cite: Kibis L.S. , Stadnichenko A.I. , Koscheev S.V. , Zaikovskii V.I. , Boronin A.I.
Highly Oxidized Gold Nanoparticles: In Situ Synthesis, Electronic Properties, and Reaction Probability Toward CO Oxidation
The Journal of Physical Chemistry C. 2015. V.119. N5. P.2523-2529. DOI: 10.1021/jp510684s publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Oct 24, 2014
Published online: Jan 27, 2015
Published print: Feb 5, 2015
Identifiers:
publication_identifier.wos_identifier_type WOS:000349136400032
publication_identifier.scopus_identifier_type 2-s2.0-84922365476
publication_identifier.rinz_identifier_type 23970770
publication_identifier.accession_number_identifier_type 2014:2132288
publication_identifier.chemical_accession_number_identifier_type 162:251551
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