An XPS and STM Study of the Size Effect in NO Adsorption on Gold Nanoparticles Full article
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Russian Chemical Bulletin
ISSN: 1066-5285 , E-ISSN: 1573-9171 |
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| Output data | Year: 2011, Volume: 60, Number: 10, Pages: 1977-1984 Pages count : 8 DOI: 10.1007/s11172-011-0299-0 | ||||
| Tags | Adsorption, Gold, Nitric oxide, Photoelectron spectroscopy, Size effect | ||||
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Abstract:
The effect of the gold particle size, temperature of the model gold catalyst, and NO pressure on the composition of the adsorption layer was studied by in situ XPS and STM methods. Adsorption of nitric oxide was carried out on gold nanoparticles with a mean size of 2-7 nm prepared on the thin film surface of alumina. In high-vacuum conditions (P (NO) a parts per thousand 10(-5) Pa), only atomically adsorbed nitrogen is formed on the surface of gold nanoparticles. At about 1 Pa pressure of NO and in the temperature range from 325 to 475 K, atomically adsorbed nitrogen coexists with the N2O adsorption complex. The surface concentration of the adsorbed species changes with a change in both the mean gold particle size and adsorption temperature. The saturation coverage of the surface with the nitrogen-containing complexes is observed for the sample with a mean size of gold particles of 4 nm. The surface of these samples is mainly covered with atomically adsorbed nitrogen, the saturation coverage of adsorbed nitrogen of about similar to 0.6 monolayer is attained at T = 473 K. The change in the composition of the adsorption layer with temperature of the catalysts agrees with the literature data on the corresponding temperature dependence of the selectivity of N-2 formation observed in the catalytic reduction of NO with carbon monoxide on the Au/Al2O3 catalyst. The dependences of the composition of the adsorption layer on the mean size of Au nanoparticles (size effect) and temperature of the catalyst are explained by the sensitivity of NO adsorption to specific features of the gold surface.
Cite:
Bukhtiyarov A.V.
, Kvon R.I.
, Nartova A.V.
, Bukhtiyarov V.I.
An XPS and STM Study of the Size Effect in NO Adsorption on Gold Nanoparticles
Russian Chemical Bulletin. 2011. V.60. N10. P.1977-1984. DOI: 10.1007/s11172-011-0299-0 WOS Scopus РИНЦ OpenAlex ANCAN
An XPS and STM Study of the Size Effect in NO Adsorption on Gold Nanoparticles
Russian Chemical Bulletin. 2011. V.60. N10. P.1977-1984. DOI: 10.1007/s11172-011-0299-0 WOS Scopus РИНЦ OpenAlex ANCAN
Original:
Бухтияров А.В.
, Квон Р.И.
, Нартова А.В.
, Бухтияров В.И.
Исследование размерного эффекта в адсорбции NO на наночастицах золота методами РФЭС и СТМ
Известия Академии наук. Серия химическая. 2011. №10. С.1943-1950. РИНЦ
Исследование размерного эффекта в адсорбции NO на наночастицах золота методами РФЭС и СТМ
Известия Академии наук. Серия химическая. 2011. №10. С.1943-1950. РИНЦ
Dates:
| Submitted: | Aug 4, 2011 |
| Accepted: | Aug 16, 2011 |
| Published print: | Oct 1, 2011 |
| Published online: | Jun 26, 2012 |
Identifiers:
| ≡ Web of science: | WOS:000305679700002 |
| ≡ Scopus: | 2-s2.0-84864566579 |
| ≡ Elibrary: | 21879022 |
| ≡ OpenAlex: | W2082258754 |
| ≡ Chemical Abstracts: | 2012:924540 |
| ≡ Chemical Abstracts (print): | 157:115236 |