Synthesis and characterization of sol-gel derived bioactive CaO-SiO2-P2O5 glasses containing magnetic nanoparticles

被引：33

作者：

Baikousi, M. ^{[1
]}

Agathopoulos, S. ^{[1
]}

Panagiotopoulos, I. ^{[1
]}

Georgoulis, A. D. ^{[2
]}

Louloudi, M. ^{[3
]}

Karakassides, M. A. ^{[1
]}

机构：

[1] Univ Ioannina, Dept Mat Sci & Engn, Ioannina 45110, Greece

[2] Univ Ioannina, Dept Orthoped Surg, Orthoped Sports Med Ctr, Ioannina 45110, Greece

[3] Univ Ioannina, Dept Chem, Ioannina 45110, Greece

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2008年 / 47卷 / 01期

关键词：

magnetic nanoparticles; bioactive glass; sol-gel; calcium phosphate-silicates;

D O I：

10.1007/s10971-008-1720-5

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Magnetic bioglasses in the system CaO-SiO2-P2O5 were prepared by interaction of acetic acid vapors with iron nitrate dispersed on the surface of sol-gel derived porous silicate network. Upon pyrolysis, the created iron acetate species transform into magnetic iron oxide nanoparticles. X-ray diffraction (XRD), FT-infrared (FT-IR) spectroscopy and surface area measurements (BET) were employed to monitor the evolution of glass structural features during the synthetic pathway as well as the structure and the texture of the resultant glasses. XRD, Raman spectroscopy and vibration magnetic measurements (VSM) revealed the features of magnetic phases, developed in the form of gamma-Fe2O3 and magnetite. The obtained glasses exhibit in vitro bioactivity, expressed by spontaneous formation of hydroxyapatite on their surface after immersion in SBF at 37 degrees C, confirmed with mu-Raman and FT-IR spectroscopies.

引用

页码：95 / 101

页数：7

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