Мақаланы E-mail арқылы жіберу Low-Temperature Sol–Gel Synthesis and Photoactivity of Nanocrystalline TiO2 with the Anatase/Brookite Structure and an Amorphous Component
- Авторлар: Kozhevnikova N.S.1, Ul’yanova E.S.1, Shalaeva E.V.1, Zamyatin D.A.2,3, Bokunyaeva A.O.2, Yushkov A.A.2, Kolosov V.Y.2, Buldakova L.Y.1, Yanchenko M.Y.1, Gorbunova T.I.4, Pervova M.G.4, Enyashin A.N.1, Vorokh A.S.1
-
Мекемелер:
- Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
- Ural Federal University Named after the First President of Russia B. N. Yeltsin
- Zavaritskii Institute of Geology and Geochemistry, Ural Branch, Russian Academy of Sciences
- Postovskii Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences
- Шығарылым: Том 60, № 3 (2019)
- Беттер: 325-336
- Бөлім: Article
- URL: https://journals.rcsi.science/0023-1584/article/view/164248
- DOI: https://doi.org/10.1134/S002315841903008X
- ID: 164248
Дәйексөз келтіру
Ашық рұқсат
Рұқсат берілді
Тек жазылушылар үшін
Аннотация
Nanodispersed TiO2 consisting of anatase and brookite phases in a ratio of 3 : 1 is obtained by the sol–gel method from titanium(IV) butoxide at a temperature below 100°C. X-ray diffraction, transmission electron microscopy, and Raman spectroscopy are used to show that the size of anatase particles is about 6 nm, and brookite particles consist of a crystal core, 4 nm in diameter, surrounded by an amorphous shell. Compared with the commercial Degussa P25 photocatalyst, which consists of the anatase and rutile phases in the same 3 : 1 ratio, the resulting TiO2 exhibits an increased photoactivity in hydroquinone oxidation. Quantum chemical modeling of anatase and brookite surfaces as well as their interface does not reveal the specific features of their electronic structure. This fact is indicative of the amorphous phase as an active participant in the transfer of charge carriers in the photocatalytic process.
Авторлар туралы
N. Kozhevnikova
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620990
E. Ul’yanova
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Хат алмасуға жауапты Автор.
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620990
E. Shalaeva
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620990
D. Zamyatin
Ural Federal University Named after the First President of Russia B. N. Yeltsin; Zavaritskii Institute of Geology and Geochemistry, Ural Branch, Russian Academy of Sciences
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620002; Yekaterinburg, 620016
A. Bokunyaeva
Ural Federal University Named after the First President of Russia B. N. Yeltsin
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620002
A. Yushkov
Ural Federal University Named after the First President of Russia B. N. Yeltsin
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620002
V. Kolosov
Ural Federal University Named after the First President of Russia B. N. Yeltsin
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620002
L. Buldakova
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620990
M. Yanchenko
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620990
T. Gorbunova
Postovskii Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620219
M. Pervova
Postovskii Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620219
A. Enyashin
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620990
A. Vorokh
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Email: tsivileva.yekaterina@yandex.ru
Ресей, Yekaterinburg, 620990
Қосымша файлдар
