Hydroxyapatite/Anatase Photocatalytic Core–Shell Composite Prepared by Sol‒Gel Processing
- 作者: 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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隶属关系:
- 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
- 期: 卷 63, 编号 2 (2018)
- 页面: 254-260
- 栏目: 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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详细
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.
作者简介
T. Khamova
Grebenshchikov Institute of Silicate Chemistry
Email: ofrank-kam@mail.ru
俄罗斯联邦, St. Petersburg, 199034
O. Frank-Kamenetskaya
Grebenshchikov Institute of Silicate Chemistry; St. Petersburg State University
编辑信件的主要联系方式.
Email: ofrank-kam@mail.ru
俄罗斯联邦, 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
俄罗斯联邦, St. Petersburg, 199034; St. Petersburg, 199013
V. Chelibanov
AO “OPTEC,”
Email: ofrank-kam@mail.ru
俄罗斯联邦, St. Petersburg, 199178
A. Marugin
AO “OPTEC,”
Email: ofrank-kam@mail.ru
俄罗斯联邦, St. Petersburg, 199178
E. Yasenko
AO “OPTEC,”
Email: ofrank-kam@mail.ru
俄罗斯联邦, St. Petersburg, 199178
M. Kuz’mina
St. Petersburg State University
Email: ofrank-kam@mail.ru
俄罗斯联邦, St. Petersburg, 199034
A. Baranchikov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: ofrank-kam@mail.ru
俄罗斯联邦, Moscow, 119991
V. Ivanov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: ofrank-kam@mail.ru
俄罗斯联邦, Moscow, 119991