Mechanochemical Synthesis of SiO4 4--Substituted Hydroxyapatite, Part III - Thermal Stability
Science article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
European Journal of Inorganic Chemistry
ISSN: 1434-1948
, E-ISSN: 1099-0682
|
| Output data |
Year: 2016,
Number: 12,
Pages: 1866-1874
Pages count
: 9
DOI:
10.1002/ejic.201501486
|
| Tags |
Doping, Hydroxyapatite, Mechanochemical synthesis, Silicon, Solid-phase synthesis, Thermal stability |
| Authors |
Bulina Natalya V.
1
,
Chaikina Marina V.
1
,
Prosanov Igor Yu.
1
,
Gerasimov Konstantin B.
1
,
Ishchenko Arkady V.
2,3
,
Dudina Dina V.
4,5
|
| Affiliations |
| 1 |
Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze st. 18, 630128 Novosibirsk, Russian Federation
|
| 2 |
Boreskov Institute of Catalysis SB RAS, pr. Lavrentieva 5, 630090 Novosibirsk, Russian Federation
|
| 3 |
Novosibirsk State University, Pirogova st. 2, 630090 Novosibirsk, Russian Federation
|
| 4 |
Lavrentyev Institute of Hydrodynamics SB RAS, pr. Lavrentieva 15, 630090 Novosibirsk, Russian Federation
|
| 5 |
Novosibirsk State Technical University, K. Marx Ave. 20, 630073 Novosibirsk, Russian Federation
|
|
Funding (1)
|
1
|
Council for Grants of the President of the Russian Federation
|
НШ-2938.2014.3
|
Thermal stability of mechanochemically synthesized silicon-substituted hydroxyapatite containing 0.6, 0.8, 1.0, and 1.2 mol of silicon per mol of apatite unit cell has been studied for the first time. The powders of the silicon-substituted hydroxyapatite were annealed within the temperature range 700-1300 °C. It was found that the substituted hydroxyapatites remain single-phase after annealing at temperatures of up to 900 °C for all concentrations of added silicon. The second phase - silicocarnotite Ca5(PO4)2SiO4 - appears in the materials containing 1.0 and 1.2 mol of added silicon that have been annealed at 1000 °C. In the powder containing 0.8 mol of added silicon, silicocarnotite was detected after annealing at 1100 °C. The formation of silicocarnotite is likely to occur in the nanoparticles of the silicon-substituted hydroxyapatite with silicon concentrations much higher than the average value. It was found that the silicon-substituted hydroxyapatite containing 0.6 mol of silicon per mol of apatite unit cell has the highest thermal stability and remains single-phase up to a temperature of 1200 °C, similarly to pure hydroxyapatite obtained by the same synthesis method.