Nanotechnology's exponential growth has spurred a demand for high-quality and safe nanomaterials, prompting increased interest in cost-effective and fast colloidal syntheses that must mitigate their irreversible aggregation, an issue particularly pertaining to spherical selenium nanoparticles (SeNPs), promising materials in a wide array of technological and biological fields. This study presents a novel approach to SeNP synthesis in confined environments developed from the highly biocompatible surfactant sodium oleate (NaOl) and the amino acid l-cysteine as a selenite-reducing agent. l-cysteine@NaOl (C@NaOl) confined environments were modulable as a function of the amino acid and surfactant concentrations and yielded high-quality spherical SeNPs with enhanced stability. This approach enables generating SeNPs even under alkaline conditions and improving up to 3-fold the final SeNP yield compared to other processes. Besides, we introduce a groundbreaking method for determining SeNP size by adapting Mie's scattering theory to metalloid NPs. This innovative technique proves effective for SeNPs in the 40–100 nm range, offering a reliable alternative to conventional sizing methods. These findings provide valuable insights regarding the generation of bio- and eco-compatible confined environments and SeNPs, paving the way for developing safe, cost-effective, and environmentally friendly strategies for their synthesis with broad applications in various scientific and technological domains.
Piacenza E., Vitale F., Ciaramitaro V., Lombardo R., Ferrante F., Chillura Martino D.F. (2024). Advancing SeNP synthesis: Innovative confined environments for enhanced stability and size control. MATERIALS TODAY CHEMISTRY, 38, 1-16 [10.1016/j.mtchem.2024.102115].
Advancing SeNP synthesis: Innovative confined environments for enhanced stability and size control
Piacenza E.
Primo
;Vitale F.Secondo
;Ciaramitaro V.;Lombardo R.;Ferrante F.;Chillura Martino D. F.Ultimo
2024-06-01
Abstract
Nanotechnology's exponential growth has spurred a demand for high-quality and safe nanomaterials, prompting increased interest in cost-effective and fast colloidal syntheses that must mitigate their irreversible aggregation, an issue particularly pertaining to spherical selenium nanoparticles (SeNPs), promising materials in a wide array of technological and biological fields. This study presents a novel approach to SeNP synthesis in confined environments developed from the highly biocompatible surfactant sodium oleate (NaOl) and the amino acid l-cysteine as a selenite-reducing agent. l-cysteine@NaOl (C@NaOl) confined environments were modulable as a function of the amino acid and surfactant concentrations and yielded high-quality spherical SeNPs with enhanced stability. This approach enables generating SeNPs even under alkaline conditions and improving up to 3-fold the final SeNP yield compared to other processes. Besides, we introduce a groundbreaking method for determining SeNP size by adapting Mie's scattering theory to metalloid NPs. This innovative technique proves effective for SeNPs in the 40–100 nm range, offering a reliable alternative to conventional sizing methods. These findings provide valuable insights regarding the generation of bio- and eco-compatible confined environments and SeNPs, paving the way for developing safe, cost-effective, and environmentally friendly strategies for their synthesis with broad applications in various scientific and technological domains.File | Dimensione | Formato | |
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