Реферат: Oxygen adsorption over clean and carbon-modified silver surfaces has been studied by XPS and UPS in the temperature range 300–700 K under O2 pressures from 10−3 to 10 Pa. Adsorption over a clean silver surface at T>420 K leads to the appearance of atomically adsorbed oxygen on the surface, which is characterized by EB(O 1s) = 528.5 eV, high reactivity towards CO and a heat of adsorption of 100 kJ/mol. Subsurface oxygen is formed in small amounts. Increasing the O2 pressure to 10 Pa does not lead to the formation of new adsorption forms. At T < 420 K carbonate structures with EB(C 1s)=287.8 eV and EB(O 1s)=530.6 eV are formed on the surface. During interaction of O2 with the silver surface containing dissolved carbon in the bulk, the surface is modified by O and C due to CO bond formation in the subsurface region. The O2 adsorption at high pressures (10 Pa) on the modified surface is characterized by the formation of a new oxygen state with EB=530.3 eV. Based on UPS spectra characteristics (the peak at EBθ9.5 eV), this state is supposed to be of molecular form.

Библиографическая ссылка: Boronin A.I. , Bukhtiyarov V.I. , Vishnevskii A.L. , Boreskov G.K. , Savchenko V.I.
XPS and UPS Studies of Oxygen Adsorption over Clean and Carbon-Modified Silver Surfaces
Surface Science. 1988. V.201. N1-2. P.195-210. DOI: 10.1016/0039-6028(88)90606-1 WOS Scopus РИНЦ CAPlusCA OpenAlex

Даты:

Поступила в редакцию:	25 мар. 1987 г.
Опубликована в печати:	1 янв. 1988 г.
Принята к публикации:	15 февр. 1988 г.
Опубликована online:	23 сент. 2002 г.

Идентификаторы БД:

Web of science:	WOS:A1988P384300016
Scopus:	2-s2.0-0000056973
РИНЦ:	30799377
Chemical Abstracts:	1988:499306
Chemical Abstracts (print):	109:99306
OpenAlex:	W1966140520

Цитирование в БД:

БД	Цитирований
Web of science	80
Scopus	79
РИНЦ	81
OpenAlex	76

Альметрики: