Hydroxyapatite/Anatase Photocatalytic Core–Shell Composite Prepared by Sol‒Gel Processing
- Авторлар: Khamova T.1, Frank-Kamenetskaya O.1,2, Shilova O.1,3, Chelibanov V.4, Marugin A.4, Yasenko E.4, Kuz’mina M.2, Baranchikov A.5, Ivanov V.5
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Мекемелер:
- Grebenshchikov Institute of Silicate Chemistry
- St. Petersburg State University
- St. Petersburg State Technological Institute (Technical University)
- AO “OPTEC,”
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- Шығарылым: Том 63, № 2 (2018)
- Беттер: 254-260
- Бөлім: Nanomaterials and Ceramics
- URL: https://journals.rcsi.science/1063-7745/article/view/192339
- DOI: https://doi.org/10.1134/S1063774518020086
- ID: 192339
Дәйексөз келтіру
Аннотация
The conditions for preparing hydroxyapatite/anatase Ca10(PO4)6(OH)2/TiO2 nanocomposites with a core–shell structure by sol‒gel processing have been optimized. The photocatalytic activity of these nanocomposites is close to that of the commercial photocatalysts based on titanium dioxide (precursor Ti(OBut)4 concentration 40 vol %, hydroxyapatite/TiO2 sol ratio 1: 2, annealing temperature 500°C). The photocatalytic activity of hydroxyapatite/TiO2 composites with different anatase contents has been estimated for the first time from the singlet oxygen yield. It is shown that the degree of modification of apatite particle surface affects significantly the structural characteristics of the hydroxyapatite/TiO2 composite. An increase in the relative anatase content reduces the sizes of apatite crystallites and increases their specific surface.
Авторлар туралы
T. Khamova
Grebenshchikov Institute of Silicate Chemistry
Email: ofrank-kam@mail.ru
Ресей, St. Petersburg, 199034
O. Frank-Kamenetskaya
Grebenshchikov Institute of Silicate Chemistry; St. Petersburg State University
Хат алмасуға жауапты Автор.
Email: ofrank-kam@mail.ru
Ресей, St. Petersburg, 199034; St. Petersburg, 199034
O. Shilova
Grebenshchikov Institute of Silicate Chemistry; St. Petersburg State Technological Institute (Technical University)
Email: ofrank-kam@mail.ru
Ресей, St. Petersburg, 199034; St. Petersburg, 199013
V. Chelibanov
AO “OPTEC,”
Email: ofrank-kam@mail.ru
Ресей, St. Petersburg, 199178
A. Marugin
AO “OPTEC,”
Email: ofrank-kam@mail.ru
Ресей, St. Petersburg, 199178
E. Yasenko
AO “OPTEC,”
Email: ofrank-kam@mail.ru
Ресей, St. Petersburg, 199178
M. Kuz’mina
St. Petersburg State University
Email: ofrank-kam@mail.ru
Ресей, St. Petersburg, 199034
A. Baranchikov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: ofrank-kam@mail.ru
Ресей, Moscow, 119991
V. Ivanov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: ofrank-kam@mail.ru
Ресей, Moscow, 119991