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Oxidation and Nanoparticle Formation during Ce(III) Sorption onto Mineralsстатья
Статья опубликована в высокорейтинговом журнале
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: 26 июня 2024 г.
- Авторы: Romanchuk Anna Yu, Plakhova Tatiana V., Konyukhova Anastasiia D., Smirnova Anastasiia, Kozlov Daniil A., Novichkov Daniil A., Trigub Alexander L., Kalmykov Stepan N.
- Журнал: Environmental Science and Technology
- Том: 57
- Номер: 13
- Год издания: 2023
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 5243
- Последняя страница: 5251
- DOI: 10.1021/acs.est.2c08921
- Аннотация: The sorption of Ce(III) on three abundant environmental minerals (goethite, anatase, and birnessite) was investigated. Batch sorption experiments using a radioactive 139Ce tracer were performed to investigate the key features of the sorption process. Differences in sorption kinetics and changes in oxidation states were found in the case of the sorption of Ce(III) on birnessite compared to that on other minerals. Speciation of cerium onto all of the studied minerals was investigated using spectral and microscopic methods: high-resolution transmission electron microscopy (HRTEM), electron energy loss spectroscopy (EELS), and X-ray absorption spectroscopy (XAS) in conjunction with theoretical calculations. It was found that during the sorption process onto birnessite, Ce(III) was oxidized to Ce(IV), while the Ce(III) on goethite and anatase surfaces remained unchanged. Oxidation of Ce(III) by sorption on birnessite was also accompanied by the formation of CeO2 nanoparticles on the mineral surface, which depended on the initial cerium concentration and pH value.
- Добавил в систему: Романчук Анна Юрьевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | EST_Romanchuk-2023.pdf | 3,3 МБ | 20 апреля 2023 [anna_romanchuk] |