Synthesis of Silver-Containing Bioactive Glass Material by an Improved Sol–Gel Method
— A bioactive glass 60SiO 2 –31CaO–4P 2 O 5 –5Ag 2 O (mol %) has been synthesized by an improved sol-gel method. The main process includes the hydrolysis in a hot solvent system without using catalysts to form sol solution, and then the conversion of sol to gel based on the hydrothermal reaction in...
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Veröffentlicht in: | Russian journal of inorganic chemistry 2022-12, Vol.67 (Suppl 1), p.S63-S70 |
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Hauptverfasser: | , , , , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
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A bioactive glass 60SiO
2
–31CaO–4P
2
O
5
–5Ag
2
O (mol %) has been synthesized by an improved sol-gel method. The main process includes the hydrolysis in a hot solvent system without using catalysts to form sol solution, and then the conversion of sol to gel based on the hydrothermal reaction in a shortened time. X-ray powder diffraction emphasizes the synthetic material containing an amorphous phase of glass, and crystalline phases of metallic silver (Ag) and silver oxide (Ag
2
O). The N
2
adsorption/desorption technique combined with FE-SEM, and TEM observations show that synthetic glass is a mesoporous material composed of quasi-spherical nanoparticles with an average diameter of 11.5 nm. In vitro experiment in SBF solution confirmed the bioactivity of Ag-containing bioactive glass through the formation of hydroxyapatite (HA) mineral layer, and also recorded the release of Ag-antibacterial agent from the silica network. The great benefit of this work is the use of an improved sol-gel method with shortening time and is environmentally friendly in the synthesis of bioactive glass. |
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ISSN: | 0036-0236 1531-8613 |
DOI: | 10.1134/S003602362260160X |