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Sonochemical Approach to the Synthesis of Fe3O4@SiO2 Core−Shell Nanoparticles with Tunable Properties
Abstract
In this study, we report a rapid sonochemical synthesis of monodisperse nonaggregated Fe(3)O(4)@SiO(2) magnetic nanoparticles (NPs). We found that coprecipitation of Fe(II) and Fe(III) in aqueous solutions under the effect of power ultrasound yields smaller Fe(3)O(4) NPs with a narrow size distribution (4-8 nm) compared to the silent reaction. Moreover, the coating of Fe(3)O(4) NPs with silica using an alkaline hydrolysis of tetraethyl orthosilicate in ethanol-water mixture is accelerated many-fold in the presence of a 20 kHz ultrasonic field. The thickness of the silica shell can be easily controlled in the range of several nanometers during sonication. Mossbauer spectra revealed that nonsuperparamagnetic behavior of obtained core-shell NPs is mostly related to the dipole-dipole interactions of magnetic cores and not to the particle size effect. Core-shell Fe(3)O(4)@SiO(2) NPs prepared with sonochemistry exhibit a higher magnetization value than that for NPs obtained under silent conditions owing to better control of the deposited silica quantities as well as to the high speed of sonochemical coating, which prevents the magnetite from oxidizing.
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Citations
Cited by
Wu, W., Wu, Z., Yu, T., Jiang, C., & Kim, W.-S. (2015) · Science and Technology of Advanced Materials · doi:10.1088/1468-6996/16/2/023501 · Cited by 1,574
Cao, H., He, J., Deng, L., & Gao, X. (2009) · Applied Surface Science · doi:10.1016/j.apsusc.2009.04.199 · Cited by 270
Supraparticles: Functionality from Uniform Structural Motifs
Wintzheimer, S., Granath, T., Oppmann, M., Kister, T., Thai, T., Kraus, T., Vogel, N., & Mandel, K. (2018) · ACS Nano · doi:10.1021/acsnano.8b00873 · Cited by 253
Improved functionalization of oleic acid-coated iron oxide nanoparticles for biomedical applications
Bloemen, M., Brullot, W., Luong, T. T., Geukens, N., Gils, A., & Verbiest, T. (2012) · Journal of Nanoparticle Research · doi:10.1007/s11051-012-1100-5 · Cited by 206
Sodipo, B. K., & Aziz, A. A. (2016) · Journal of Magnetism and Magnetic Materials · doi:10.1016/j.jmmm.2016.05.019 · Cited by 169
Metadata
- Authors
- Morel, A.-L., Nikitenko, S. I., Gionnet, K., Wattiaux, A., Lai-Kee-Him, J., Labrugere, C., Chevalier, B., Deleris, G., Petibois, C., Brisson, A., & Simonoff, M.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-05-01
- Volume
- 2
- Issue
- 5
- Pages
- 847-856
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2092727804
- Cited by
- 418
- References
- 0
- FWCI
- 7.58
- Type
- journal article
- Language
- en
- Open access
- closed
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- Morel, A.-L., Nikitenko, S. I., Gionnet, K., Wattiaux, A., Lai-Kee-Him, J., Labrugere, C., Chevalier, B., Deleris, G., Petibois, C., Brisson, A., & Simonoff, M. (2008). Sonochemical Approach to the Synthesis of Fe3O4@SiO2 Core−Shell Nanoparticles with Tunable Properties. ACS Nano. https://doi.org/10.1021/nn800091q
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