Radionuclide sorption diagnostics of nanoagglomerates and textures based on themстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 4 февраля 2014 г.
Авторы:
Severin A.V. ,
Badun G.A. ,
Tyasto Z.A.
Журнал:
Radiochemistry
Том:
51
Номер:
1
Год издания:
2009
Издательство:
Pleiades Publishing, Inc.
Местоположение издательства:
New York, USA
Первая страница:
55
Последняя страница:
58
DOI:
10.1134/S1066362209010123
Аннотация:
Diagnostics of nanoagglomerates of hydroxyapatite Ca10(PO 4)6(OH)2 and of hierarchic structures based on them by the method of adsorption of tritium-labeled sodium succinate is made. The adsorption kinetics is one-step in the case of hydroxyapatite nanocrystals and two-step in the case of textured hydroxyapatite. The parameters of the S-shaped sorption isotherms are calculated; they are described by the Guggenheim-Fowler-Frumkin equation. The specific surface area of hydroxyapatite nanoagglomerates is 650-700 m2 g-1, which is close to the theoretical density of individual nanocrystals (900 m2 g -1), and the specific surface area of textured hydroxyapatite (macrospheroids) is 250-300 m2 g-1. Adsorption of succinate ions on the surface of hydroxyapatite nanocrystals leads to the formation of a tightly bound monolayer, which may lead to structural rearrangement of the sorbent. © 2009 Pleiades Publishing, Ltd.
Добавил в систему:
Бадун Геннадий Александрович