Email this article Hydroxyapatite/Anatase Photocatalytic Core–Shell Composite Prepared by Sol‒Gel Processing
- Authors: Khamova T.V.1, Frank-Kamenetskaya O.V.1,2, Shilova O.A.1,3, Chelibanov V.P.4, Marugin A.M.4, Yasenko E.A.4, Kuz’mina M.A.2, Baranchikov A.E.5, Ivanov V.K.5
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Affiliations:
- 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
- Issue: Vol 63, No 2 (2018)
- Pages: 254-260
- Section: Nanomaterials and Ceramics
- URL: https://journals.rcsi.science/1063-7745/article/view/192339
- DOI: https://doi.org/10.1134/S1063774518020086
- ID: 192339
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Abstract
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.
About the authors
T. V. Khamova
Grebenshchikov Institute of Silicate Chemistry
Email: ofrank-kam@mail.ru
Russian Federation, St. Petersburg, 199034
O. V. Frank-Kamenetskaya
Grebenshchikov Institute of Silicate Chemistry; St. Petersburg State University
Author for correspondence.
Email: ofrank-kam@mail.ru
Russian Federation, St. Petersburg, 199034; St. Petersburg, 199034
O. A. Shilova
Grebenshchikov Institute of Silicate Chemistry; St. Petersburg State Technological Institute (Technical University)
Email: ofrank-kam@mail.ru
Russian Federation, St. Petersburg, 199034; St. Petersburg, 199013
V. P. Chelibanov
AO “OPTEC,”
Email: ofrank-kam@mail.ru
Russian Federation, St. Petersburg, 199178
A. M. Marugin
AO “OPTEC,”
Email: ofrank-kam@mail.ru
Russian Federation, St. Petersburg, 199178
E. A. Yasenko
AO “OPTEC,”
Email: ofrank-kam@mail.ru
Russian Federation, St. Petersburg, 199178
M. A. Kuz’mina
St. Petersburg State University
Email: ofrank-kam@mail.ru
Russian Federation, St. Petersburg, 199034
A. E. Baranchikov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: ofrank-kam@mail.ru
Russian Federation, Moscow, 119991
V. K. Ivanov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: ofrank-kam@mail.ru
Russian Federation, Moscow, 119991
