TiO2-Bioactive Glass Nanostructure Composite Films Produced by a Sol-Gel Method: In Vitro Behavior and UV-Enhanced Bioactivity

The paper focuses on the acid-free hydrothermal process for the synthesis of bioactive glass. The new method avoids the use of harmful acid catalysts, which are usually used in the sol-gel process. On the other hand, the processing time was reduced compared with the sol-gel method. A well-known ternary bioactive glass 58SiO2-33CaO-9P2O5 (wt%), which has been widely synthesized through the sol-gel method, was selected to apply to this new process. Thermal behavior, textural property, phase composition, morphology, and ionic exchange were investigated by thermal analysis, N2 adsorption/desorption, XRD, FTIR, SEM, and inductively coupled plasma optical emission spectrometry (ICP-OES) analysis. The bioactivity and biocompatibility of synthetic bioactive glass were evaluated by in vitro experiments with a simulated body fluid (SBF) solution and cell culture medium. The obtained results confirmed that the acid-free hydrothermal process is one of the ideal methods for preparing ternary bioactive glass.

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Fabrication of Mesoporous Bioactive Glass Nanoparticles by Sol-Gel Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.765.136 ◽

2018 ◽

Vol 765 ◽

pp. 136-139

Author(s):

Wei Wen Lin ◽

Wei Fang ◽

I Hao Chen ◽

Tze Yo Hung ◽

Chih Ling Huang

Keyword(s):

Electron Microscopy ◽

Bioactive Glass ◽

Sol Gel ◽

Tumor Resection ◽

Gel Method ◽

Sol Gel Method ◽

Ph Values ◽

Transmission Electron ◽

Mesoporous Bioactive Glass

Bioactive glass (BG) is characteristic of its great biocompatibility as well as osteoconductivity. Application of BG after surgery (e.g., tumor resection) aids rehabilitation of previously traumatized area, promotes bone regeneration, and prevents aggravation of wounds. In this in vitro study, bioglass nanoparticles (BGN) were successfully produced via sol-gel method. We observed the morphology of BGN through Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). Particle size was measured by Dynamic Light Scattering (DLS): 182.9 nm ± 37.7 nm in diameter, which corresponds to images obtained by SEM and TEM. We then synthesized BGs containing different proportions of Ca and P ions. Under different pH values, gels with various morphologies were formed.

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Synthesis, characterization and in vitro cytotoxicity study of Co and Ni ferrite nanoparticles prepared by sol-gel method

SN Applied Sciences ◽

10.1007/s42452-021-04709-y ◽

2021 ◽

Vol 3 (7) ◽

Author(s):

Alexandre Pancotti ◽

Dener Pereira Santos ◽

Dielly Oliveira Morais ◽

Mauro Vinícius de Barros Souza ◽

Débora R. Lima ◽

...

Keyword(s):

Photoelectron Spectroscopy ◽

Sol Gel ◽

Test Sample ◽

In Vitro Cytotoxicity ◽

Gel Method ◽

X Ray ◽

Sol Gel Method ◽

Transmission Electron ◽

Crystallite Sizes

AbstractIn this study, we report the synthesis and characterization of NiFe2O4 and CoFe2O4 nanoparticles (NPs) which are widely used in the biomedical area. There is still limited knowledge how the properties of these materials are influenced by different chemical routes. In this work, we investigated the effect of heat treatment over cytotoxicity of cobalt and niquel ferrites NPs synthesized by sol-gel method. Then the samples were studied using transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), vibrating sample magnetometer (VSM), Fourier Transform Infrared Spectroscopy Analysis (FTIR), and X-ray fluorescence (XRF). The average crystallite sizes of the particles were found to be in the range of 20–35 nm. The hemocompatibility (erythrocytes and leukocytes) was checked. Cytotoxicity results were similar to those of the control test sample, therefore suggesting hemocompatibility of the tested materials.

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Study on the Influence Factors of ZnFe2O4 and TiO2 Composite Films Photoelectrocatalytic Properties

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.287-290.2199 ◽

2011 ◽

Vol 287-290 ◽

pp. 2199-2202

Author(s):

Gui Qin Hou ◽

Wen Li Zhang ◽

Shui Jing Gao ◽

Xiao Yan Wang

Keyword(s):

Methyl Orange ◽

Sol Gel ◽

Composite Films ◽

Influence Factors ◽

Nanocomposite Films ◽

Gel Method ◽

Sol Gel Method ◽

Conductive Glass ◽

Photocatalytic Activities ◽

Film Layer

The ZnFe2O4 and TiO2 nanocomposite films was prepared by Sol-Gel method on conductive glass, and the influence factors of it’s photoelectrocatalytic performence such as the film layer, pole and voltage was investigated. The results indicated that: the photocatalytic effects of composite films with ZnFe2O4+ TiO2+ ZnFe2O4 was the best. The decomposing ratio of methyl orange with the photoelectrocatalysis of composite films at voltage 0.2-6V all increased unstably.At the same time, the distance from films to pole plank also had the effects on the photocatalytic activities of the films.

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