Microbial green synthesis of luminescent terbium sulfide nanoparticles using E. Coli: a rare earth element detoxification mechanism

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dc.contributor.authorLeón, Juan José
dc.contributor.authorOetiker, Nía
dc.contributor.authorTorres, Nicolás
dc.contributor.authorBruna, Nicolás
dc.contributor.authorOskolkov, Evgenii
dc.contributor.authorLei, Pedro
dc.contributor.authorKuzmin, Andrey
dc.contributor.authorChen, Kaiwen
dc.contributor.authorAndreadis, Stelios
dc.contributor.authorPfeifer, Blaine A.
dc.contributor.authorSwihart, Mark T.
dc.contributor.authorPrasad, Paras N. b
dc.date.accessioned2024-11-08T19:27:07Z
dc.date.available2024-11-08T19:27:07Z
dc.date.issued2024-12
dc.descriptionIndexación: Scopus.
dc.description.abstractBackground: Rare-earth sulfide nanoparticles (NPs) could harness the optical and magnetic features of rare-earth ions for applications in nanotechnology. However, reports of their synthesis are scarce and typically require high temperatures and long synthesis times. Results: Here we present a biosynthesis of terbium sulfide (TbS) NPs using microorganisms, identifying conditions that allow Escherichia coli to extracellularly produce TbS NPs in aqueous media at 37 °C by controlling cellular sulfur metabolism to produce a high concentration of sulfide ions. Electron microscopy revealed ultrasmall spherical NPs with a mean diameter of 4.1 ± 1.3 nm. Electron diffraction indicated a high degree of crystallinity, while elemental mapping confirmed colocalization of terbium and sulfur. The NPs exhibit characteristic absorbance and luminescence of terbium, with downshifting quantum yield (QY) reaching 28.3% and an emission lifetime of ~ 2 ms. Conclusions: This high QY and long emission lifetime is unusual in a neat rare-earth compound; it is typically associated with rare-earth ions doped into another crystalline lattice to avoid non-radiative cross relaxation. This suggests a reduced role of nonradiative processes in these terbium-based NPs. This is, to our knowledge, the first report revealing the advantage of biosynthesis over chemical synthesis for Rare Earth Element (REE) based NPs, opening routes to new REE-based nanocrystals. © The Author(s) 2024.
dc.description.urihttps://microbialcellfactories.biomedcentral.com/articles/10.1186/s12934-024-02519-6
dc.identifier.citationMicrobial Cell Factories, Volume 23, Issue 1 December 2024, Article number 248
dc.identifier.doi10.1186/s12934-024-02519-6
dc.identifier.issn14752859
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/61837
dc.language.isoen
dc.publisherBioMed Central Ltd
dc.rights.licenseAttribution-NonCommercial-NoDerivatives 4.0 International CC BY-NC-ND 4.0 Deed
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectEscherichia coli
dc.subjectGreen Chemistry Technology
dc.subjectLuminescence
dc.subjectMetals, Rare Earth
dc.subjectNanoparticles
dc.subjectSulfides
dc.subjectTerbium
dc.titleMicrobial green synthesis of luminescent terbium sulfide nanoparticles using E. Coli: a rare earth element detoxification mechanism
dc.typeArtículo
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