Effect of low-temperature treatment of silver hydrosol on its absorption spectra

Absorption spectra of a stable silver hydrosol before and after low-temperature treatment were recorded and analyzed. An increased duration of this treatment leads to linear decrease in volume concentration of Ag particles having an absorption maximum λmax = 412 nm and to the formation of a new fraction of larger particles. It was shown on the basis of calculation of spectra by the Mie theory and the theory of plasmon resonance absorption that the low-temperature treatment of hydrosol does not change the electron density of metal particles and the number of surface defects. The effect of low-temperature treatment is independent of sol concentration. The particle aggregation under low-temperature treatment conditions is favored by the preliminary adsorption of p-phenylenediamine derivative.

Авторы
Редакторы
-
Журнал
Издательство
-
Номер выпуска
2
Язык
Английский
Страницы
252-255
Статус
Опубликовано
Подразделение
-
Номер
-
Том
64
Год
2002
Организации
  • 1 Russian Univ. of Peoples' Friendship, ul. Miklukho-Maklaya 6, Moscow 117198, Russian Federation
Ключевые слова
Absorption spectroscopy; Agglomeration; Carrier concentration; Defects; Low temperature effects; Silver; Surface plasmon resonance; Hydrosols; Sols
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/210/