Effect of the Structure of Small Anatase Nanoparticles on the Localization of Photogenerated Charge Carriers Научная публикация
Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Вых. Данные | Год: 2017, Том: 58, Номер: 6, Страницы: 688-694 Страниц : 7 DOI: 10.1134/S002315841706012X | ||||||
Ключевые слова | photocatalysis; molecular orbitals; DFTB; DFT; band gap | ||||||
Авторы |
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Организации |
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Реферат:
The structure of nanoparticles and the spatial arrangement of photogenerated thermalized charge carriers are studied for a series of isomers of small anatase nanoparticles (TiO2)(29)(H2O)(4), (TiO2)(70)(H2O)(4), and (TiO2)(70) with faces (001) and (101) on the surface. It is shown that the location of surface hydroxyl groups and their replacement by surface oxygen atoms affect the nature and degree of deformation of the nanoparticle structure. The location of the boundary orbitals depends both on the size of the nanoparticles and on the location of the hydroxyl groups, as well as on the degree of dehydroxylation, which leads to the replacement of the hydroxyl groups by the surface oxygen atoms. In the case of a certain arrangement of hydroxyl groups or surface oxygen atoms, uncharged small stoichiometric anatase nanoparticles begin to absorb light in the visible region of the spectrum (the band gap width E (g) decreasing to 2.25 eV). This is associated with the energy levels at the edge of the band gap near the valence band and the conduction band.
Библиографическая ссылка:
Vorontsov A.V.
Effect of the Structure of Small Anatase Nanoparticles on the Localization of Photogenerated Charge Carriers
Kinetics and Catalysis. 2017. V.58. N6. P.688-694. DOI: 10.1134/S002315841706012X WOS Scopus РИНЦ OpenAlex
Effect of the Structure of Small Anatase Nanoparticles on the Localization of Photogenerated Charge Carriers
Kinetics and Catalysis. 2017. V.58. N6. P.688-694. DOI: 10.1134/S002315841706012X WOS Scopus РИНЦ OpenAlex
Оригинальная:
Воронцов А.В.
Влияние строения малых наночастиц анатаза на локализацию фотогенерированных носителей заряда
Кинетика и катализ. 2017. Т.58. №6. С.704-711. DOI: 10.7868/S0453881117060156 РИНЦ OpenAlex
Влияние строения малых наночастиц анатаза на локализацию фотогенерированных носителей заряда
Кинетика и катализ. 2017. Т.58. №6. С.704-711. DOI: 10.7868/S0453881117060156 РИНЦ OpenAlex
Даты:
Опубликована в печати: | 1 нояб. 2017 г. |
Опубликована online: | 1 мар. 2018 г. |
Идентификаторы БД:
Web of science: | WOS:000426573800004 |
Scopus: | 2-s2.0-85042702315 |
РИНЦ: | 35507963 |
OpenAlex: | W2792116757 |