11 June 2024
Melnyk, I.V., Tomina, V., Yankovych, H., Kolev, H., Dutkova, E., Breijaert, T.C., Kessler, V.G., Seisenbaeva, G.A.
(
Христо Колев;
)
Abstract
Spherical particles with tunable anisotropic structures enabled by multiple surface functionalities have garnered interest for their potential applications in adsorption technologies. The presence of diverse functional groups in the surface layer, exhibiting varying acidity and hydrophilicity, can lead to unique characteristics in terms of surface structure and behaviour. In this study, the particles were synthesised using a two-step approach involving surface functionalisation of previously synthesised SiO2 St?ber particles. This was achieved by employing 3-mercaptopropyltrimethoxysilane (MPTMS) and 3-aminopropyltrimethoxysilane (APTMS) in a toluene-in-water emulsion. The resulting particles were found to be nonporous, with a specific surface area of 8 m2 g?1. Their sizes were determined to be up to 350 nm through photon cross-correlation spectroscopy. Moreover, the particles exhibited a high net content of functional groups (both amino and mercapto) of 2 mmol g?1. The organisation of the particles during synthesis was observed through SEM images, providing insights into their structural characteristics. Additionally, the study of Eu(iii), Au(iii), and Ag(i) ions and fluorescein adsorption demonstrated varying interactions on the surface, highlighting the potential applications and versatility of these functionalised particles. Spherical particles with adjustable anisotropic structures and diverse surface functionalities have sparked interest in their applications in adsorption technologies and potential in fluorescence-based sensing.
Nanoscale Adv., 6, 12, Royal Society of Chemistry, 2024, ISSN:25160230, DOI:https://doi.org/10.1039/D3NA00909B, 3146-3157. SJR (Scopus):0.95, JCR-IF (Web of Science):4.7 Q1, не оглавява ранглистата (Web of Science)
https://www.sciencedirect.com/org/science/article/pii/S2516023024002326
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