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Materials 2018, 11(1), 173; https://doi.org/10.3390/ma11010173

Fe-Doped Sol-Gel Glasses and Glass-Ceramics for Magnetic Hyperthermia

Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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Received: 24 December 2017 / Revised: 17 January 2018 / Accepted: 19 January 2018 / Published: 22 January 2018
(This article belongs to the Special Issue Bioactive Glasses 2017)
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Abstract

This work deals with the synthesis and characterization of novel Fe-containing sol-gel materials obtained by modifying the composition of a binary SiO2-CaO parent glass with the addition of Fe2O3. The effect of different processing conditions (calcination in air vs. argon flowing) on the formation of magnetic crystalline phases was investigated. The produced materials were analyzed from thermal (hot-stage microscopy, differential thermal analysis, and differential thermal calorimetry) and microstructural (X-ray diffraction) viewpoints to assess both the behavior upon heating and the development of crystalline phases. N2 adsorption–desorption measurements allowed determining that these materials have high surface area (40–120 m2/g) and mesoporous texture with mesopore size in the range of 18 to 30 nm. It was assessed that the magnetic properties can actually be tailored by controlling the Fe content and the environmental conditions (oxidant vs. inert atmosphere) during calcination. The glasses and glass-ceramics developed in this work show promise for applications in bone tissue healing which require the use of biocompatible magnetic implants able to elicit therapeutic actions, such as hyperthermia for bone cancer treatment. View Full-Text
Keywords: bioactive glass; sol-gel; thermal properties; magnetic; magnetite; mesoporous; hyperthermia; cancer treatment bioactive glass; sol-gel; thermal properties; magnetic; magnetite; mesoporous; hyperthermia; cancer treatment
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Baino, F.; Fiume, E.; Miola, M.; Leone, F.; Onida, B.; Laviano, F.; Gerbaldo, R.; Verné, E. Fe-Doped Sol-Gel Glasses and Glass-Ceramics for Magnetic Hyperthermia. Materials 2018, 11, 173.

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