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Journal of Sol-Gel Science and Technology

Erschienen in:

26.08.2020 | Original Paper: Sol-gel, hybrids and solution chemistries

Investigating the mechanism of uniform Ag@SiO₂ core-shell nanostructures synthesis by a one-pot sol–gel method

verfasst von: Mohammad Jamir Ahemad, Yeon-Tae Yu

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 3/2020

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Abstract

Monodispersed Ag@SiO₂ core-shell structure nanoparticles (NPs) are synthesized at room temperature via a one-pot sol–gel synthesis method, and the synthesizing procedure is observed over reaction time in order to investigate the formation mechanism. Ostwald ripening of silver (Ag) core NPs and silica (SiO₂) shells during synthesis of core-shell NPs proceeds in parallel to reaction time. Uniform and stable Ag@SiO₂ core-shell NPs are formed at 48 h of reaction time. The hydrolysis rate of tetraethyl orthosilicate (TEOS) plays a critical role in the growth of Ag NPs and the final structure of Ag@SiO₂ core-shell NPs. The formation mechanisms of single-core and multicore Ag@SiO₂ core-shell NPs are discussed in relation to synchronous Ag core and SiO₂ shell growth. Optimal reaction conditions for critical parameters (water volume and TEOS and ascorbic acid concentrations) are also determined.

Vorheriger Artikel Self-cleaning material based on superhydrophobic coatings through an environmentally friendly sol–gel method

Nächster Artikel Effect of the addition of calcium salts on the structure and anticorrosion properties of siloxane-poly(hydroxyethyl methacrylate) hybrid coating applied on Ti-6Al-4V alloy

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Titel: Investigating the mechanism of uniform Ag@SiO2 core-shell nanostructures synthesis by a one-pot sol–gel method
verfasst von: Mohammad Jamir Ahemad
Yeon-Tae Yu
Publikationsdatum: 26.08.2020
Verlag: Springer US
Erschienen in: Journal of Sol-Gel Science and Technology / Ausgabe 3/2020
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI: https://doi.org/10.1007/s10971-020-05392-y

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