NDLI: Colloidal Stability of Silica-Modified Magnetite Nanoparticles: Comparison of Various Dispersion Techniques

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Colloidal Stability of Silica-Modified Magnetite Nanoparticles: Comparison of Various Dispersion Techniques

Content Provider	MDPI
Author	Erzs, ébet Illés Etelka, Tombácz Dzhardimalieva, Gulzhian Bondarenko, Lyubov Tropskaya, Nataliya Magomedov, Igor Orekhov, Alexander Kydralieva, Kamila
Copyright Year	2021
Description	The production of stable and homogeneous batches during nanoparticle fabrication is challenging. Surface charging, as a stability determinant, was estimated for 3-aminopropyltriethoxysilane (APTES) coated pre-formed magnetite nanoparticles (MNPs). An important consideration for preparing stable and homogenous MNPs colloidal systems is the dispersion stage of pre-formed samples, which makes it feasible to increase the MNP reactive binding sites, to enhance functionality. The results gave evidence that the samples that had undergone stirring had a higher loading capacity towards polyanions, in terms of filler content, compared to the sonicated ones. These later results were likely due to the harsh effects of sonication (extremely high temperature and pressure in the cavities formed at the interfaces), which induced the destruction of the MNPs.
Starting Page	3295
e-ISSN	20794991
DOI	10.3390/nano11123295
Journal	Nanomaterials
Issue Number	12
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-12-04
Access Restriction	Open
Subject Keyword	Nanomaterials Silica-modified Magnetite Nanoparticles Dispersion Zeta-potential Hydrodynamic Size Polyanions Loading
Content Type	Text
Resource Type	Article

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