Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

Формат представления найденных документов:
полный	информационный	краткий

Поисковый запрос: (<.>K=Polysulfide<.>)

Общее количество найденных документов : 1

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mikhlin Y. L., Nasluzov V., Ivaneeva A., Vorobyev S., Likhatski M., Romanchenko A., Krylov A. S., Zharkov S. M., Meira D. M.
Заглавие : Formation, evolution and characteristics of copper sulfide nanoparticles in the reactions of aqueous cupric and sulfide ions
Место публикации : Mater. Chem. Phys. - 2020. - Vol. 255. - Ст.123600. - ISSN 02540584 (ISSN), DOI 10.1016/j.matchemphys.2020.123600
Примечания : Cited References: 74. - This research was supported by the Russian Foundation for Basic Research , project 18-03-00526a . We thank the ESRF for allocating beamtime, and the BM23 staff for their help during the experiments. Facilities of the Krasnoyarsk Regional Research Equipment Centre of SB RAS were employed in the work
Аннотация: Colloidal copper sulfides produced in reactions of aqueous copper and sulfide ions are important for many materials applications, environment and mineral processing. Here, CuxS nanoparticles formed and aged at varying copper sulfate to sodium sulfide ratios were studied using in situ UV–vis–NIR spectroscopy, dynamic light scattering, X-ray absorption spectroscopy, ex situ TEM, X-ray photoelectron spectroscopy and Raman scattering, and DFT + U calculations. It was established that the ratio of aqueous Cu2+ to S2− ions of 1:2 is critical for the reaction, which yields disordered covellite-like 4–6 nm Cu0.7S nanoparticles comprised polysulfide species at this and higher sulfide concentrations; upon aging, the particles release sulfur and transform to chalcocite-like structure (Cu2-xS, x  1). Conversely, at the “excess” of copper ions, Cu2-xS-type particles grew into 12–14 nm “covellitic” nanoparticles. The optical absorbance at 1100–1200 nm commonly attributed to localized surface plasmon resonance increased with time and was lowest for Cu2+/S2−
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие