|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
The reactivity of lead chalcogenide (001) surfaces interacting with H2Sстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Yashina L.V., Püttner R., Zyubina T.S., Poygin M.V., Shtanov V.I., Neudachina V.S., Molodtsov S.L., Dobrovolsky Y.A.
- Журнал: Journal of Physical Chemistry C
- Том: 111
- Год издания: 2007
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 17297
- Последняя страница: 17304
- DOI: 10.1021/jp0724119
- Аннотация: The interaction of the semiconductor compounds PbS, PbSe, and PbTe with H2S was studied using X-ray photoemission spectroscopy performed at the synchrotron radiation facility BESSY II. For all surfaces sulfidation subsequent to dissociation of H2S was observed. For PbS, the sulfur atoms occupy the surface anion vacancies. In the case of PbSe, either a similar interaction or an anion substitution at the surface takes place; besides, H2S adsorption leads to the agglomeration of additional sulfur atoms forming S-n(2-). For the reaction of H2S with PbTe surfaces we suggest a mechanism which includes at least three steps. The first step leads to a formation of Pb-S-Te bonds, which is also supported by the results of quantum chemical calculations performed in the framework of cluster approach. The subsequent steps include further gradual oxidation of the tellurium atoms and result finally in the formation of quite stable thiotellurite species.
- Добавил в систему: Яшина Лада Валерьевна